{"id":1771243,"date":"2026-02-05T13:15:00","date_gmt":"2026-02-05T10:15:00","guid":{"rendered":"https:\/\/analyse.optim.biz\/?p=1771243"},"modified":"2026-02-05T13:15:00","modified_gmt":"2026-02-05T10:15:00","slug":"can-castor-oil-give-you-long-thick-and-healthy-hair-experts-weigh-in","status":"publish","type":"post","link":"https:\/\/analyse.optim.biz\/?p=1771243","title":{"rendered":"Can Castor Oil Give You Long, Thick, and Healthy Hair? Experts Weigh In"},"content":{"rendered":"<p>[analyse_image type=&#8221;featured&#8221; src=&#8221;https:\/\/www.byrdie.com\/thmb\/5_S9Zq3QFvo2O75qQIUJsHt7QJs=\/1500&#215;0\/filters:no_upscale():max_bytes(150000):strip_icc()\/castoroil1-9baa7d984f094e2bbf83a6e473118274.png&#8221;]<\/p>\n<p><main id=\"main_1-0\" class=\"comp main layout-body--continuous-scroll mntl-block\" data-tracking-container=\"true\"><\/p>\n<article id=\"beauty-article--sc_1-0\" class=\"comp beauty-article--sc beauty-article mntl-article mntl-article--three-column sc-ad-container\" data-tracking-container=\"true\">\n<div class=\"loc article-header\">\n<div id=\"article-header_1-0\" class=\"comp article-header mntl-block article-top\">\n<h1 id=\"article-heading_1-0\" class=\"comp article-heading mntl-text-block\">Can Castor Oil Give You Long, Thick, and Healthy Hair? Experts Weigh In<\/h1>\n<div id=\"article-meta_1-0\" class=\"comp article-meta mntl-article-meta mntl-block\" data-tracking-container=\"true\">\n<div id=\"bylines_1-0\" class=\"comp bylines beauty-bylines mntl-bylines\" data-tracking-container=\"true\">\n<div id=\"mntl-bylines__group_1-0\" class=\"comp mntl-bylines__group mntl-block mntl-bylines__group--author\">\n<div id=\"mntl-bylines__item_1-0\" class=\"comp mntl-bylines__item mntl-attribution__item mntl-attribution__item--has-date\"><span class=\"mntl-attribution__item-descriptor\">By<\/span><\/p>\n<div data-tooltip=\"Erin Jahns is a hair, makeup, and nails expert and beauty editor with over five years of experience in the industry. She is currently the senior beauty editor at WhoWhatWear.\" data-inline-tooltip=\"true\"> Erin Jahns<\/p>\n<div id=\"mntl-author-tooltip_1-0\" class=\"comp mntl-author-tooltip mntl-tooltip mntl-group\">\n<div class=\"mntl-author-tooltip__top \">\n<div class=\"mntl-author-tooltip__image-wrapper\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"200\" alt=\"byrdie contributing writer erin jahns headshot\" class=\"lazyload mntl-author-tooltip__image mntl-image universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/qfgQn6bXzpPkEAT-K5wpHpzeVB8=\/200x200\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/download-14-ErinJahns-f0f3fb861ba5492e90ed7e8342cfaa17.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/qfgQn6bXzpPkEAT-K5wpHpzeVB8=\/200x200\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/download-14-ErinJahns-f0f3fb861ba5492e90ed7e8342cfaa17.jpg\" width=\"200\" height=\"200\" class=\"img--noscript mntl-author-tooltip__image mntl-image universal-image__image\" alt=\"byrdie contributing writer erin jahns headshot\"><\/div>\n<\/div>\n<div id=\"mntl-author-tooltip__name_1-0\" class=\"comp mntl-author-tooltip__name mntl-attribution__item \">\nErin Jahns\n<\/div>\n<div id=\"mntl-author-tooltip__social-nav_1-0\" class=\"comp mntl-author-tooltip__social-nav beauty-social-nav mntl-social-nav social-nav--tooltip\" data-tracking-container=\"true\">\n<ul class=\"social-nav__list\">\n<li class=\"social-nav__item social-nav__item--instagram\"><\/ul>\n<\/div>\n<div class=\"mntl-author-tooltip__bio\">\nErin Jahns is a hair, makeup, and nails expert and beauty editor with over five years of experience in the industry. She is currently the senior beauty editor at WhoWhatWear.\n<\/div>\n<\/div>\n<div class=\"mntl-author-tooltip__bottom\">\nByrdie&#8217;s Editorial Guidelines\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"mntl-attribution__item-date\">Published on February 05, 2026 08:15AM<\/div>\n<\/div>\n<div id=\"mntl-bylines__group_2-0\" class=\"comp mntl-bylines__group mntl-block mntl-bylines__group--beauty_wellness_reviewer\">\n<div id=\"mntl-bylines__item_2-0\" class=\"comp mntl-bylines__item mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Reviewed by<\/span><\/p>\n<div data-tooltip=\"Sky Kim is a hairstylist with over a decade of experience. She currently works at Serge Normant at John Frieda in New York City.\" data-inline-tooltip=\"true\"> Sky Kim<\/p>\n<div id=\"mntl-author-tooltip_2-0\" class=\"comp mntl-author-tooltip mntl-tooltip mntl-group\">\n<div class=\"mntl-author-tooltip__top \">\n<div class=\"mntl-author-tooltip__image-wrapper\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"200\" alt=\"hairstylist sky kim\" class=\"lazyload mntl-author-tooltip__image mntl-image universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/zDwKaaqC3KZQjNbr8w90nWP2iJM=\/200x200\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/skykim-5cac8dc2231e4bf790fecb325f8b6ad1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/zDwKaaqC3KZQjNbr8w90nWP2iJM=\/200x200\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/skykim-5cac8dc2231e4bf790fecb325f8b6ad1.jpg\" width=\"200\" height=\"200\" class=\"img--noscript mntl-author-tooltip__image mntl-image universal-image__image\" alt=\"hairstylist sky kim\"><\/div>\n<\/div>\n<div id=\"mntl-author-tooltip__name_2-0\" class=\"comp mntl-author-tooltip__name mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Reviewed by<\/span><br \/>\nSky Kim\n<\/div>\n<div id=\"mntl-author-tooltip__social-nav_2-0\" class=\"comp mntl-author-tooltip__social-nav beauty-social-nav mntl-social-nav social-nav--tooltip\" data-tracking-container=\"true\">\n<ul class=\"social-nav__list\">\n<li class=\"social-nav__item social-nav__item--instagram\"><\/ul>\n<\/div>\n<div class=\"mntl-author-tooltip__bio\">\nSky Kim is a hairstylist with over a decade of experience. She currently works at Serge Normant at John Frieda in New York City.\n<\/div>\n<\/div>\n<div class=\"mntl-author-tooltip__bottom\">\nAbout Byrdie&#8217;s Beauty &amp; Wellness Board\n<\/div>\n<\/div>\n<\/div>\n<div class=\"mntl-attribution__item-postscript\">Hairstylist<\/div>\n<\/div>\n<\/div>\n<div id=\"mntl-bylines__group_3-0\" class=\"comp mntl-bylines__group mntl-block mntl-bylines__group--fact_checker\">\n<div id=\"mntl-bylines__item_3-0\" class=\"comp mntl-bylines__item mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Fact checked by<\/span><\/p>\n<div data-tooltip=\"Anna Harris is an experienced fact-checker and researcher and a beauty writer and editor.\u00a0\" data-inline-tooltip=\"true\"> Anna Harris<\/p>\n<div id=\"mntl-author-tooltip_3-0\" class=\"comp mntl-author-tooltip mntl-tooltip mntl-group\">\n<div class=\"mntl-author-tooltip__top mntl-author-tooltip__top--no-image\">\n<div id=\"mntl-author-tooltip__name_3-0\" class=\"comp mntl-author-tooltip__name mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Fact checked by<\/span><br \/>\nAnna Harris\n<\/div>\n<div class=\"mntl-author-tooltip__bio\">\nAnna Harris is an experienced fact-checker and researcher and a beauty writer and editor.\u00a0\n<\/div>\n<\/div>\n<div class=\"mntl-author-tooltip__bottom\">\nLEARN ABOUT BYRDIE&#8217;S EDITORIAL GUIDELINES\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"loc article-left-rail\">\n<div id=\"beauty-sticky-toc_1-0\" class=\"comp beauty-sticky-toc mntl-block js-sticky-container sticky-toc__wrapper\">\n<div id=\"sticky-toc_1-0\" class=\"comp sticky-toc mntl-universal-sticky-toc mntl-sticky-toc mntl-block sticky-toc-widget\" data-desktop-bp=\"70em\">\n<div id=\"toc-wrapper_1-0\" class=\"comp toc-wrapper mntl-toc mntl-block\" data-chop-mobile=\"false\" data-offset=\"60\" data-tracking-container=\"true\">\n<div id=\"mntl-toc__inner_1-0\" class=\"comp mntl-toc__inner mntl-block\">\n<div id=\"mntl-toc__heading_1-0\" class=\"comp mntl-toc__heading mntl-block js-toc-toggle\"><span id=\"mntl-toc__heading-text_1-0\" class=\"comp mntl-toc__heading-text mntl-text-block\">In This Article<\/span><\/p>\n<div id=\"mntl-toc-toggle_1-0\" class=\"comp mntl-toc-toggle mntl-block\">\n<div id=\"mntl-toc-toggle__btn_1-0\" class=\"comp mntl-toc-toggle__btn mntl-text-block js-mntl-toc-toggle text-label-300\" data-click-tracked=\"true\" data-collapsed-text=\"View All\" data-expanded-text=\"View Less\">View All<\/div>\n<\/div>\n<\/div>\n<div id=\"mntl-toc__mobile-toggle_1-0\" class=\"comp mntl-toc__mobile-toggle mntl-block js-sticky-toggle\"><span id=\"mntl-toc__heading-text_2-0\" class=\"comp mntl-toc__heading-text mntl-text-block\">In This Article<\/span><\/div>\n<ul id=\"mntl-toc__list_1-0\" class=\"comp mntl-toc__list mntl-toc__list-heading expert-content text-utility-300\">\n<li id=\"mntl-toc__list-item_1-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_1-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">What Is Castor Oil?<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_2-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_2-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">Benefits of Castor Oil for Hair<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_3-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_3-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">Hair Type Considerations<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_4-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_4-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">How to Use Castor Oil for Hair<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_5-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_5-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">How to Use Castor Oil on Eyebrows and Lashes<\/span><\/div>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"loc article-content\">\n<div id=\"article__broad-video-jw_1-0\" class=\"comp article__broad-video-jw mntl-jwplayer-broad mntl-block is-hidden\" data-pixel-depth=\"100\">\n<div id=\"mntl-jwplayer-broad__title_1-0\" class=\"comp mntl-jwplayer-broad__title mntl-block\"><button id=\"mntl-jwplayer-broad__title-icon--close_1-0\" class=\"comp mntl-jwplayer-broad__title-icon--close mntl-block text-label-100\" data-click-tracked=\"false\"><span id=\"mntl-text-block_2-0\" class=\"comp mntl-text-block\">Close<\/span><\/button><\/div>\n<\/div>\n<div id=\"mntl-block_2-0\" class=\"comp mntl-block article__body right-rail\">\n<figure id=\"mntl-universal-primary-image_1-0\" class=\"comp mntl-universal-primary-image primary-image\" data-tracking-container=\"true\">\n<div class=\"primary-image__media\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/ne0hDkdaIekoesG9rOygH6EbCoo=\/1500x0\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/castoroil-836c0c401ae74dd794fe40f7e88267f3.png\" width=\"2000\" height=\"1500\" alt=\"castor oil and hair brush\" class=\" primary-image__image mntl-primary-image--blurry\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/ne0hDkdaIekoesG9rOygH6EbCoo=\/1500x0\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/castoroil-836c0c401ae74dd794fe40f7e88267f3.png\" width=\"2000\" height=\"1500\" class=\"loaded primary-img--noscript primary-image__image mntl-primary-image--blurry\" alt=\"castor oil and hair brush\"><\/div>\n<\/div><figcaption id=\"primary-image__figcap_1-0\" class=\"comp primary-image__figcap mntl-figure-caption figure-article-caption\"><span class=\"figure-article-caption-owner\"><\/p>\n<p>Liz deSousa for BYRDIE<\/p>\n<p><\/span><\/figcaption><\/figure>\n<div id=\"mntl-sc-page_1-0\" class=\"comp mntl-sc-page mntl-block\" data-sc-sticky-offset=\"125\" data-sc-ad-label-height=\"16\" data-sc-ad-track-spacing=\"100\" data-sc-min-track-height=\"250\" data-sc-max-track-height=\"600\" data-sc-breakpoint=\"50em\" data-sc-load-immediate=\"5\" data-sc-content-positions=\"[1, 1250, 1, 1, 1, 1, 1, 1, 1]\" data-bind-scroll-on-start=\"true\">\n<div id=\"mntl-sc-block_1-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--finalverdict beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-finalverdict\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_1-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Key Takeaways<\/p>\n<div id=\"mntl-sc-block-callout-body_1-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<ul>\n<li>Castor oil is known for its nutritional benefits, promoting a healthier scalp environment that supports better hair growth.<\/li>\n<li>Experts suggest using castor oil sparingly, applying it once a week for 20 to 30 minutes for best results.<\/li>\n<li>While castor oil is praised for its nourishing properties, scientific evidence supporting its hair growth claims is still lacking.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p id=\"mntl-sc-block_2-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> It seems as if every other day there&#8217;s a new skin or hair ingredient en vogue that&#8217;s suddenly deemed the miracle worker we&#8217;ve been waiting for. Considering that we live in the age of TikTok and light-speed trend cycles, this isn&#8217;t necessarily surprising, but it does make us question what <em>does<\/em> and doesn&#8217;t work. For moments like this, we dive head-first into the research (and call upon the experts), to determine whether our beauty routine <em>actually<\/em> needs another step. Currently, we&#8217;re studying up on castor oil.\n<\/p>\n<p id=\"mntl-sc-block_4-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Believe it or not, castor oil has been used for millennia. The natural oil is believed to have properties that encourage hair growth, health, and thickness. And being that it supposedly has such an effect on hair, castor oil can be found in many hair care products, as well as brow and lash serums.\n<\/p>\n<p id=\"mntl-sc-block_6-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> To set the record we straight\u2014and manage expectations of the alleged miracle worker\u2014we spoke to three experts about its hair growth potential and what we should be wary of. Below, find insights from a hair expert, cosmetic chemist, and board-certified dermatologist, and learn everything there is to know about using castor oil for your hair.\n<\/p>\n<div id=\"mntl-sc-block_8-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--meetourexpert beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-meetourexpert\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_2-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Meet the Experts<\/p>\n<div id=\"mntl-sc-block-callout-body_2-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<ul>\n<li>Rachel Nazarian, MD, is a board-certified dermatologist at Schweiger Dermatology Group in NYC. She is experienced in a range of dermatologic practices including cosmetic treatments, skin cancer, general dermatology, and dermatologic surgery.<\/li>\n<li>Philip B. is a Los Angeles-based hair and scalp expert, as well as the founder of Philip B. Haircare.<\/li>\n<li>Ginger King is a cosmetic chemist, owner of product development firm Grace Kingdom Beauty, and founder of lip care brand Fan Love Beauty.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_9-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> What Is Castor Oil? <\/span><\/h2>\n<p id=\"mntl-sc-block_10-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Castor oil is a nutrient-dense oil extracted from pressed seeds of the castor oil plant Ricinus communis, which is mainly grown in India, South America, Africa, and China. The produced oil typically has a pale-yellow or almost colorless appearance with a subtle mild scent. It has many medicinal, household, and pharmaceutical uses and is also widely used in skincare and cosmetics for its potential healing properties.\n<\/p>\n<div id=\"mntl-sc-block_12-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--ffingredients beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-ffingredients\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_3-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Castor Oil<\/p>\n<div id=\"mntl-sc-block-callout-body_3-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<p><strong>Type of Ingredient<\/strong>: Hydrator, strengthener.<\/p>\n<p><strong>Main benefits<\/strong>: Nourishes the scalp and protects strands.<\/p>\n<p><strong>Who should use it<\/strong>: Those who are not pregnant (anecdotal evidence suggests that castor oil can induce labor) and those looking for a treatment to nourish dry strands.<\/p>\n<p><strong>How often can you use it<\/strong>: Use once per week for 20-30 minutes as a treatment. It is an oil, so a little goes a long way.<\/p>\n<p><strong>Works well with<\/strong>: Carrier oils such as coconut (or other ingredients that impart moisture to hair).<\/p>\n<p><strong>Don&#8217;t use with<\/strong>: There are no known ingredients that negatively interfere with castor oil.<\/p>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_13-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Benefits of Castor Oil for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_14-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> The use of castor oil for hair dates back to 4000 BC in ancient Egypt. Castor oil has been claimed to have a slew of benefits, including strengthening strands, promoting hair growth, and nourishing dry scalp. And while the oil itself likely can&#8217;t make the hair grow, it&#8217;s loved for its ability to create a healthier environment on the scalp that makes for way better hair growth.\n<\/p>\n<ul id=\"mntl-sc-block_16-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Nourishing<\/strong><strong>and strengthening for strands<\/strong>: &#8220;Castor oil is nourishing,&#8221; says King. Nazarian concurs, saying that unlike most other oils, which can veer mostly fatty, castor oil has a nutritional makeup composed of a powerful mix of proteins, vitamins, fatty acids, <em>and<\/em> antioxidants (aka the internal workings of all the buzziest hair supplements on the market). Thus, it comes as no surprise that the oil is claimed to be a wonderful way to nurture the scalp and fragile hair follicles while simultaneously encouraging healthier, faster hair growth. For this reason, castor oil has increasingly become a key ingredient in hair products.<\/li>\n<li><strong>Might help with hair loss<\/strong>: While there&#8217;s no concrete scientific evidence on why castor oil is so beneficial for the hair, it&#8217;s certainly a well-loved oil in the beauty industry. According to Nazarian, castor oil can in fact be useful in certain cases of hair loss. Others aren&#8217;t so convinced. King, for instance, says &#8220;there are no scientific studies on this or FDA approval for use for hair growth.&#8221;<\/li>\n<li><strong>Has antimicrobial properties: <\/strong>When it comes to scalp care, hair and scalp expert Philip B. agrees that castor oil has antimicrobial properties that may be useful in fighting off bacterial or fungal overgrowth on the scalp, but with a caveat. &#8220;It&#8217;s true that fungal overgrowth can lead to hair-damaging scalp inflammation and castor oil can help with that,&#8221; he says.<\/li>\n<li><strong>Aids in scalp flaking:<\/strong> For those who experience flaking as a result of dry scalp, castor oil can help. &#8220;Castor oil is known to be an effective and gentle method of cleansing the skin,&#8221; Nazarian explains. &#8220;Because it&#8217;s polarized, the castor oil actually attracts dirt and effectively cleanses the skin.&#8221;<\/li>\n<li><strong>Protects against breakage<\/strong>: The idea is that the high content of ricinoleic acid may help improve blood circulation in the scalp, which might lead to nutrition for the hair follicles, stronger strands, and less breakage. Plus, castor oil is a humectant, which means it&#8217;s an excellent vehicle for locking in moisture and shine. And as we know, moisturized (aka not dry, damaged, and split-prone) hair may be more likely to grow at a healthier rate.<\/li>\n<li><strong>Increases the absorption of other products<\/strong>: In addition to its efficacy for the scalp, Nazarian tells us castor oil is thought to enhance and increase the absorption of other products. If incorporated into your normal hair ritual, your other products might actually penetrate more effectively, which will only do your hair&#8217;s health and growth ambition a favor in the long run. After all, a residue-filled scalp does not make for a healthy mane.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_18-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Hair Type Considerations <\/span><\/h2>\n<p id=\"mntl-sc-block_19-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Castor oil is best used on those with dry or flaky scalps and brittle hair\u2014it is an oil, so it might be overkill for use on those who already have oily hair.\n<\/p>\n<p id=\"mntl-sc-block_21-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> There&#8217;s also anecdotal evidence to suggest it can be effective on the eyelashes and eyebrows. Nazarian says that while the oil is a known irritant for many, strategically applying a very small amount to eyelashes or eyebrows may help induce regrowth through a specific, localized region. If you&#8217;re concerned about getting an allergic reaction, do a test patch on a small area of your skin before applying it to these sensitive areas.<\/p>\n<h2 id=\"mntl-sc-block_23-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> How to Use Castor Oil for Hair <\/span><\/h2>\n<ul id=\"mntl-sc-block_24-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Apply sparingly:<\/strong> Since it is an oil, a little will go a long way\u2014it&#8217;s all about moderation and being cautious. &#8220;You want to avoid overdoing it or getting it in your eyes and other sensitive areas,&#8221; Nazarian warns. That said, experts seem to agree the oil is safe enough to cautiously experiment with at home. Start out with a patch test, keep expectations realistic, and heed their advice of using a small amount during application to ensure you don&#8217;t experience any adverse reactions. It&#8217;s also often recommended you don&#8217;t use it more than once a week.<\/li>\n<li><strong>Use as a 20-minute treatment:<\/strong> To use, warm the oil in your palms before working it through the roots of your hair and brushing it out toward the ends. Leave it in for 15 to 20 minutes minimum, and then shampoo it out of your hair. You can wet your hair beforehand in order to make the oil soak in better. Do note that, for some, castor oil can be difficult to work with because of its tendency to stick. &#8220;Because castor oil is highly occlusive and a big &#8216;coater,&#8217; if you put it directly on your hair, you will be stuck with it for days and days,&#8221; explains Philip B.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_26-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> How to Use Castor Oil on Eyebrows and Lashes <\/span><\/h2>\n<p id=\"mntl-sc-block_27-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Many swear by using castor oil on brows and lashes to reap the same benefits as those outlined here.\n<\/p>\n<ol id=\"mntl-sc-block_29-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li>To apply castor oil to your eyelashes, make sure they&#8217;re completely clean and free of makeup.<\/li>\n<li>Dip a cotton swab into a small amount of oil, close your eyes, and gently swipe the oil across your lashes, being mindful that it doesn&#8217;t get in your eyes.<\/li>\n<li>Try the same technique for brows, applying the oil with a cotton swab and using a tissue to ensure it doesn&#8217;t go beyond the brow line, into your eyes. As Philip B notes, it can be sticky, just as it can be on the head.<\/li>\n<\/ol>\n<div id=\"mntl-sc-block_31-0\" class=\"comp mntl-sc-block beauty-sc-block-faq--expanded beauty-sc-block-faq mntl-sc-block-faq mntl-block is-expanded\">\n<div id=\"mntl-sc-block-faq__title_1-0\" class=\"comp mntl-sc-block-faq__title mntl-text-block\">FAQ<\/div>\n<ul id=\"mntl-sc-block-faq__content_1-0\" class=\"comp mntl-sc-block-faq__content mntl-accordion \" data-tracking-container=\"true\">\n<li class=\"accordion__item js-accordion-item is-active\" data-ordinal=\"1\">\n<div class=\"accordion__header js-accordion-trigger\" id=\"mntl-accordion__item_1-0-section-0\"><span class=\"accordion__title\">Can I leave castor oil in my hair overnight?<\/span><\/div>\n<div class=\"accordion__body\">\n<div id=\"mntl-accordion__content_1-0\" class=\"comp mntl-accordion__content\">\n<div class=\"faq-accordion__item-answer\">\n<p>According to herbalist Katie Pande, overnight castor oil treatments can be great for addressing split ends. \u201cFor the ultimate restorative hair mask, blend with coconut oil and leave it on overnight to work its magic on your mane,&#8221; she says.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<li class=\"accordion__item js-accordion-item is-active\" data-ordinal=\"2\">\n<div class=\"accordion__header js-accordion-trigger\" id=\"mntl-accordion__item_2-0-section-1\"><span class=\"accordion__title\">Does castor oil stop gray hair?<\/span><\/div>\n<div class=\"accordion__body\">\n<div id=\"mntl-accordion__content_2-0\" class=\"comp mntl-accordion__content\">\n<div class=\"faq-accordion__item-answer\">\n<p>There are no studies to support the use of castor oil for preventing or reversing gray hair. Indeed, there is no way to reverse gray hair: \u201cOnce the melanocyte stem cells in the bulge region of the follicle are depleted it is irreversible,\u201d Zenovia Gabriel, MD, told us. Howard Sobel, MD, says that while there is no way to prevent going gray, managing your stress, avoiding smoking, and making sure you&#8217;re getting vitamins D and B12 can help keep hair from graying prematurely.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div id=\"citation-sources_1-0\" class=\"comp citation-sources mntl-article-sources mntl-expandable-block u-article-styles\" data-scroll-offset=\"70\">\n<div class=\"loc toggle-content\">\n<div id=\"mntl-article-sources__wrapper_1-0\" class=\"comp mntl-article-sources__wrapper mntl-block\" data-click-tracked=\"true\"><span id=\"mntl-article-sources__heading_1-0\" class=\"comp mntl-article-sources__heading mntl-text-block\">Article Sources<\/span><\/div>\n<\/div>\n<div class=\"loc expandable-content\">\n<div id=\"citation-sources__text_1-0\" class=\"comp citation-sources__text mntl-text-block\">Byrdie takes every opportunity to use high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial guidelines to learn more about how we keep our content accurate, reliable and trustworthy.<\/div>\n<div id=\"mntl-article-sources__citation-sources_1-0\" class=\"comp mntl-article-sources__citation-sources mntl-citation-sources mntl-sources\" data-tracking-container=\"true\">\n<ol class=\"mntl-sources__content\">\n<li class=\"mntl-sources__source\" id=\"citation-1\">\n<p>PubChem. (n.d.).\u00a0<em>Concept 13508<\/em>. Retrieved July 21, 2023, from https:\/\/pubchem.ncbi.nlm.nih.gov\/compound\/Castor-Oil<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-2\">\n<p>Coconut, castor, and argan oil for hair in skin of color patients: A systematic review. (n.d.).\u00a0<em>JDDonline &#8211; Journal of Drugs in Dermatology<\/em>. Retrieved July 21, 2023, from https:\/\/jddonline.com\/articles\/coconut-castor-and-argan-oil-for-hair-in-skin-of-color-patients-a-systematic-review-s1545961622p0751x\/<\/p>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"loc article-post-content\">\n<div id=\"beauty-breadcrumbs--chips_1-0\" class=\"comp beauty-breadcrumbs--chips mntl-universal-breadcrumbs--chips mntl-block\">\n<div id=\"mntl-breadcrumbs__read-more_1-0\" class=\"comp mntl-breadcrumbs__read-more mntl-text-block text-title-100\">Read more:<\/div>\n<ul id=\"mntl-universal-breadcrumbs_1-0\" class=\"comp mntl-universal-breadcrumbs mntl-block text-label-300 breadcrumbs\" data-tracking-container=\"true\">\n<li id=\"mntl-breadcrumbs__item_1-0\" class=\"comp mntl-breadcrumbs__item mntl-block\"><span class=\"link__wrapper\">Hair<\/span><\/li>\n<li id=\"mntl-breadcrumbs__item_2-0\" class=\"comp mntl-breadcrumbs__item mntl-block\"><span class=\"link__wrapper\">Hair Concerns<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/article>\n<div id=\"recirc_1-0\" class=\"comp recirc mntl-block\" data-tracking-container=\"true\">\n<h2 id=\"recirc__heading_1-0\" class=\"comp recirc__heading mntl-text-block\">Related Stories<\/h2>\n<ul id=\"card-list-1_1-0\" class=\"comp card-list-1 card-list mntl-block l-container\" data-tracking-container=\"true\">\n<li id=\"card-list__item_1-0\" class=\"comp card-list__item mntl-block \">\n<div class=\"loc card__top\">\n<div class=\"card__media mntl-image card__media universal-image__container\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" alt=\"A person before and after using the Kevin Murphy Young Again Masque\" class=\"lazyload card__img universal-image__image\" 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universal-image__container\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" alt=\"A side-by-side selection of shampoos for thinning hair or hair loss on a shelf surrounded by hands sudsing up\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/8usn3sBKtGutMueMNKC40vICouc=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/byr-tier-3-primary-best-shampoo-thinning-hair-ahuang-085-32ddc629dace4b558fa13b75ce5b2628.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/8usn3sBKtGutMueMNKC40vICouc=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/byr-tier-3-primary-best-shampoo-thinning-hair-ahuang-085-32ddc629dace4b558fa13b75ce5b2628.jpeg\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"A side-by-side selection of shampoos for thinning hair or hair loss on a shelf surrounded by hands sudsing up\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">The 8 Best Shampoos for Thinning Hair and Hair Loss, According to Experts<\/span><\/span><\/div>\n<\/li>\n<li id=\"card-list__item_11-0\" class=\"comp card-list__item mntl-block \">\n<div class=\"loc card__top\">\n<div class=\"card__media mntl-image card__media universal-image__container\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" alt=\"Shampoos being tested on different hair types\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/DcFD05uJAnAT-VOAiKfz5ZqtJkA=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/best-shampoos-tout-recirc-0ecb4f7e20f2478d9d67f1dec5a0e6a7.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/DcFD05uJAnAT-VOAiKfz5ZqtJkA=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/best-shampoos-tout-recirc-0ecb4f7e20f2478d9d67f1dec5a0e6a7.jpg\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"Shampoos being tested on different hair types\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">14 Best Shampoos for All Hair Types\u2014Shiny, Luscious Hair Awaits, Tested by Byrdie<\/span><\/span><\/div>\n<\/li>\n<li id=\"card-list__item_12-0\" class=\"comp card-list__item mntl-block \">\n<div class=\"loc card__top\">\n<div class=\"card__media mntl-image card__media universal-image__container\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" alt=\"Person with long straight hair viewed from behind head turned slightly to the side\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/wtIP1OkiTrgpBNSdCClkamZ9FkQ=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/long-hair-2-6dd41c400fa04f99b828df270d2d0720.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/wtIP1OkiTrgpBNSdCClkamZ9FkQ=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/long-hair-2-6dd41c400fa04f99b828df270d2d0720.jpg\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"Person with long straight hair viewed from behind head turned slightly to the side\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">Spirulina Is a Super Ingredient for Long, Strong Hair Growth\u2014Read All the Benefits Here<\/span><\/span><\/div>\n<\/li>\n<li id=\"card-list__item_13-0\" class=\"comp card-list__item mntl-block \">\n<div class=\"loc card__top\">\n<div class=\"card__media mntl-image card__media universal-image__container\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" alt=\"Recommended hair color removers, including Framar, Revolution Hair, and Color X-Change, collaged on a grey background\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/_Dt1ixlN4Tum8F7SDIYDKmMDgV8=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/the-best-hair-color-removers-tout-bec6dae71fa541acbe661c5b1798bab1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/_Dt1ixlN4Tum8F7SDIYDKmMDgV8=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/the-best-hair-color-removers-tout-bec6dae71fa541acbe661c5b1798bab1.jpg\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"Recommended hair color removers, including Framar, Revolution Hair, and Color X-Change, collaged on a grey background\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">The 9 Best Hair Color Removers Professional Stylists Use to Fix Any Hair Dye Job<\/span><\/span><\/div>\n<\/li>\n<li id=\"card-list__item_14-0\" class=\"comp card-list__item mntl-block \">\n<div class=\"loc card__top\">\n<div class=\"card__media mntl-image card__media universal-image__container\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" alt=\"A person holds up a bottle of Amika Hydro Rush Intense Shampoo and A person holds up a bottle of Bumble and bumble and bumble Bb Curl Moisturizing Shampoo\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/2gtEhGEhBQE-fPOdTvI8is2rOhg=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/the-best-shampoo-for-curly-hair-tout-Recirc-60ba2f6e4a7a4d7ab77329554679123c.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/2gtEhGEhBQE-fPOdTvI8is2rOhg=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/the-best-shampoo-for-curly-hair-tout-Recirc-60ba2f6e4a7a4d7ab77329554679123c.jpg\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"A person holds up a bottle of Amika Hydro Rush Intense Shampoo and A person holds up a bottle of Bumble and bumble and bumble Bb Curl Moisturizing Shampoo\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">The 11 Best Shampoos for Curly Hair That Add Definition and Moisture to Waves, Curls, and Coils<\/span><\/span><\/div>\n<\/li>\n<li id=\"card-list__item_15-0\" class=\"comp card-list__item mntl-block \">\n<div class=\"loc card__top\">\n<div class=\"card__media mntl-image card__media universal-image__container\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" alt=\"A female tester tries hairspray on her fine hair using a variety of different products\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/vm8qqIK9GpvMNQs7O1O_De0QmqU=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/byr-hairsprays-for-fine-hair-tout-recirc-671e55568604443382429582cec3586b.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/vm8qqIK9GpvMNQs7O1O_De0QmqU=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/byr-hairsprays-for-fine-hair-tout-recirc-671e55568604443382429582cec3586b.jpg\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"A female tester tries hairspray on her fine hair using a variety of different products\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">These 7 Hairsprays for Fine Hair Offer Strong Hold Without the Crunch, Tested<\/span><\/span><\/div>\n<\/li>\n<li id=\"card-list__item_16-0\" class=\"comp card-list__item mntl-block \">\n<div class=\"loc card__top\">\n<div class=\"card__media mntl-image card__media universal-image__container\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"240\" alt=\"Charli XCX and Addison Rae with their wavy hair.\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/ulbfscU91scUvJ0hWyqrOBStTwk=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/charliaddilede-b3142ab43e8e4b639158aae72f4c292b.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/ulbfscU91scUvJ0hWyqrOBStTwk=\/300x240\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/charliaddilede-b3142ab43e8e4b639158aae72f4c292b.jpg\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"Charli XCX and Addison Rae with their wavy hair.\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">Here&#8217;s All the Wavy Haircut Inspiration You and Your Stylist Need<\/span><\/span><\/div>\n<\/li>\n<\/ul>\n<\/div>\n<p><\/main><\/p>\n<article id=\"beauty-article--sc_1-0\" class=\"comp beauty-article--sc beauty-article mntl-article mntl-article--three-column sc-ad-container\" data-tracking-container=\"true\">\n<div class=\"loc article-header\">\n<div id=\"article-header_1-0\" class=\"comp article-header mntl-block article-top\">\n<h1 id=\"article-heading_1-0\" class=\"comp article-heading mntl-text-block\">Can Castor Oil Give You Long, Thick, and Healthy Hair? Experts Weigh In<\/h1>\n<div id=\"article-meta_1-0\" class=\"comp article-meta mntl-article-meta mntl-block\" data-tracking-container=\"true\">\n<div id=\"bylines_1-0\" class=\"comp bylines beauty-bylines mntl-bylines\" data-tracking-container=\"true\">\n<div id=\"mntl-bylines__group_1-0\" class=\"comp mntl-bylines__group mntl-block mntl-bylines__group--author\">\n<div id=\"mntl-bylines__item_1-0\" class=\"comp mntl-bylines__item mntl-attribution__item mntl-attribution__item--has-date\"><span class=\"mntl-attribution__item-descriptor\">By<\/span><\/p>\n<div data-tooltip=\"Erin Jahns is a hair, makeup, and nails expert and beauty editor with over five years of experience in the industry. She is currently the senior beauty editor at WhoWhatWear.\" data-inline-tooltip=\"true\"> Erin Jahns<\/p>\n<div id=\"mntl-author-tooltip_1-0\" class=\"comp mntl-author-tooltip mntl-tooltip mntl-group\">\n<div class=\"mntl-author-tooltip__top \">\n<div class=\"mntl-author-tooltip__image-wrapper\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"200\" alt=\"byrdie contributing writer erin jahns headshot\" class=\"lazyload mntl-author-tooltip__image mntl-image universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/qfgQn6bXzpPkEAT-K5wpHpzeVB8=\/200x200\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/download-14-ErinJahns-f0f3fb861ba5492e90ed7e8342cfaa17.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/qfgQn6bXzpPkEAT-K5wpHpzeVB8=\/200x200\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/download-14-ErinJahns-f0f3fb861ba5492e90ed7e8342cfaa17.jpg\" width=\"200\" height=\"200\" class=\"img--noscript mntl-author-tooltip__image mntl-image universal-image__image\" alt=\"byrdie contributing writer erin jahns headshot\"><\/div>\n<\/div>\n<div id=\"mntl-author-tooltip__name_1-0\" class=\"comp mntl-author-tooltip__name mntl-attribution__item \">\nErin Jahns\n<\/div>\n<div id=\"mntl-author-tooltip__social-nav_1-0\" class=\"comp mntl-author-tooltip__social-nav beauty-social-nav mntl-social-nav social-nav--tooltip\" data-tracking-container=\"true\">\n<ul class=\"social-nav__list\">\n<li class=\"social-nav__item social-nav__item--instagram\"><\/ul>\n<\/div>\n<div class=\"mntl-author-tooltip__bio\">\nErin Jahns is a hair, makeup, and nails expert and beauty editor with over five years of experience in the industry. She is currently the senior beauty editor at WhoWhatWear.\n<\/div>\n<\/div>\n<div class=\"mntl-author-tooltip__bottom\">\nByrdie&#8217;s Editorial Guidelines\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"mntl-attribution__item-date\">Published on February 05, 2026 08:15AM<\/div>\n<\/div>\n<div id=\"mntl-bylines__group_2-0\" class=\"comp mntl-bylines__group mntl-block mntl-bylines__group--beauty_wellness_reviewer\">\n<div id=\"mntl-bylines__item_2-0\" class=\"comp mntl-bylines__item mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Reviewed by<\/span><\/p>\n<div data-tooltip=\"Sky Kim is a hairstylist with over a decade of experience. She currently works at Serge Normant at John Frieda in New York City.\" data-inline-tooltip=\"true\"> Sky Kim<\/p>\n<div id=\"mntl-author-tooltip_2-0\" class=\"comp mntl-author-tooltip mntl-tooltip mntl-group\">\n<div class=\"mntl-author-tooltip__top \">\n<div class=\"mntl-author-tooltip__image-wrapper\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"200\" alt=\"hairstylist sky kim\" class=\"lazyload mntl-author-tooltip__image mntl-image universal-image__image\" src=\"https:\/\/www.byrdie.com\/thmb\/zDwKaaqC3KZQjNbr8w90nWP2iJM=\/200x200\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/skykim-5cac8dc2231e4bf790fecb325f8b6ad1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/zDwKaaqC3KZQjNbr8w90nWP2iJM=\/200x200\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/skykim-5cac8dc2231e4bf790fecb325f8b6ad1.jpg\" width=\"200\" height=\"200\" class=\"img--noscript mntl-author-tooltip__image mntl-image universal-image__image\" alt=\"hairstylist sky kim\"><\/div>\n<\/div>\n<div id=\"mntl-author-tooltip__name_2-0\" class=\"comp mntl-author-tooltip__name mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Reviewed by<\/span><br \/>\nSky Kim\n<\/div>\n<div id=\"mntl-author-tooltip__social-nav_2-0\" class=\"comp mntl-author-tooltip__social-nav beauty-social-nav mntl-social-nav social-nav--tooltip\" data-tracking-container=\"true\">\n<ul class=\"social-nav__list\">\n<li class=\"social-nav__item social-nav__item--instagram\"><\/ul>\n<\/div>\n<div class=\"mntl-author-tooltip__bio\">\nSky Kim is a hairstylist with over a decade of experience. She currently works at Serge Normant at John Frieda in New York City.\n<\/div>\n<\/div>\n<div class=\"mntl-author-tooltip__bottom\">\nAbout Byrdie&#8217;s Beauty &amp; Wellness Board\n<\/div>\n<\/div>\n<\/div>\n<div class=\"mntl-attribution__item-postscript\">Hairstylist<\/div>\n<\/div>\n<\/div>\n<div id=\"mntl-bylines__group_3-0\" class=\"comp mntl-bylines__group mntl-block mntl-bylines__group--fact_checker\">\n<div id=\"mntl-bylines__item_3-0\" class=\"comp mntl-bylines__item mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Fact checked by<\/span><\/p>\n<div data-tooltip=\"Anna Harris is an experienced fact-checker and researcher and a beauty writer and editor.\u00a0\" data-inline-tooltip=\"true\"> Anna Harris<\/p>\n<div id=\"mntl-author-tooltip_3-0\" class=\"comp mntl-author-tooltip mntl-tooltip mntl-group\">\n<div class=\"mntl-author-tooltip__top mntl-author-tooltip__top--no-image\">\n<div id=\"mntl-author-tooltip__name_3-0\" class=\"comp mntl-author-tooltip__name mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Fact checked by<\/span><br \/>\nAnna Harris\n<\/div>\n<div class=\"mntl-author-tooltip__bio\">\nAnna Harris is an experienced fact-checker and researcher and a beauty writer and editor.\u00a0\n<\/div>\n<\/div>\n<div class=\"mntl-author-tooltip__bottom\">\nLEARN ABOUT BYRDIE&#8217;S EDITORIAL GUIDELINES\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"loc article-left-rail\">\n<div id=\"beauty-sticky-toc_1-0\" class=\"comp beauty-sticky-toc mntl-block js-sticky-container sticky-toc__wrapper\">\n<div id=\"sticky-toc_1-0\" class=\"comp sticky-toc mntl-universal-sticky-toc mntl-sticky-toc mntl-block sticky-toc-widget\" data-desktop-bp=\"70em\">\n<div id=\"toc-wrapper_1-0\" class=\"comp toc-wrapper mntl-toc mntl-block\" data-chop-mobile=\"false\" data-offset=\"60\" data-tracking-container=\"true\">\n<div id=\"mntl-toc__inner_1-0\" class=\"comp mntl-toc__inner mntl-block\">\n<div id=\"mntl-toc__heading_1-0\" class=\"comp mntl-toc__heading mntl-block js-toc-toggle\"><span id=\"mntl-toc__heading-text_1-0\" class=\"comp mntl-toc__heading-text mntl-text-block\">In This Article<\/span><\/p>\n<div id=\"mntl-toc-toggle_1-0\" class=\"comp mntl-toc-toggle mntl-block\">\n<div id=\"mntl-toc-toggle__btn_1-0\" class=\"comp mntl-toc-toggle__btn mntl-text-block js-mntl-toc-toggle text-label-300\" data-click-tracked=\"true\" data-collapsed-text=\"View All\" data-expanded-text=\"View Less\">View All<\/div>\n<\/div>\n<\/div>\n<div id=\"mntl-toc__mobile-toggle_1-0\" class=\"comp mntl-toc__mobile-toggle mntl-block js-sticky-toggle\"><span id=\"mntl-toc__heading-text_2-0\" class=\"comp mntl-toc__heading-text mntl-text-block\">In This Article<\/span><\/div>\n<ul id=\"mntl-toc__list_1-0\" class=\"comp mntl-toc__list mntl-toc__list-heading expert-content text-utility-300\">\n<li id=\"mntl-toc__list-item_1-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_1-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">What Is Castor Oil?<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_2-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_2-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">Benefits of Castor Oil for Hair<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_3-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_3-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">Hair Type Considerations<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_4-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_4-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">How to Use Castor Oil for Hair<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_5-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_5-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">How to Use Castor Oil on Eyebrows and Lashes<\/span><\/div>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"loc article-content\">\n<div id=\"article__broad-video-jw_1-0\" class=\"comp article__broad-video-jw mntl-jwplayer-broad mntl-block is-hidden\" data-pixel-depth=\"100\">\n<div id=\"mntl-jwplayer-broad__title_1-0\" class=\"comp mntl-jwplayer-broad__title mntl-block\"><button id=\"mntl-jwplayer-broad__title-icon--close_1-0\" class=\"comp mntl-jwplayer-broad__title-icon--close mntl-block text-label-100\" data-click-tracked=\"false\"><span id=\"mntl-text-block_2-0\" class=\"comp mntl-text-block\">Close<\/span><\/button><\/div>\n<\/div>\n<div id=\"mntl-block_2-0\" class=\"comp mntl-block article__body right-rail\">\n<figure id=\"mntl-universal-primary-image_1-0\" class=\"comp mntl-universal-primary-image primary-image\" data-tracking-container=\"true\">\n<div class=\"primary-image__media\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/ne0hDkdaIekoesG9rOygH6EbCoo=\/1500x0\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/castoroil-836c0c401ae74dd794fe40f7e88267f3.png\" width=\"2000\" height=\"1500\" alt=\"castor oil and hair brush\" class=\" primary-image__image mntl-primary-image--blurry\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/ne0hDkdaIekoesG9rOygH6EbCoo=\/1500x0\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/castoroil-836c0c401ae74dd794fe40f7e88267f3.png\" width=\"2000\" height=\"1500\" class=\"loaded primary-img--noscript primary-image__image mntl-primary-image--blurry\" alt=\"castor oil and hair brush\"><\/div>\n<\/div><figcaption id=\"primary-image__figcap_1-0\" class=\"comp primary-image__figcap mntl-figure-caption figure-article-caption\"><span class=\"figure-article-caption-owner\"><\/p>\n<p>Liz deSousa for BYRDIE<\/p>\n<p><\/span><\/figcaption><\/figure>\n<div id=\"mntl-sc-page_1-0\" class=\"comp mntl-sc-page mntl-block\" data-sc-sticky-offset=\"125\" data-sc-ad-label-height=\"16\" data-sc-ad-track-spacing=\"100\" data-sc-min-track-height=\"250\" data-sc-max-track-height=\"600\" data-sc-breakpoint=\"50em\" data-sc-load-immediate=\"5\" data-sc-content-positions=\"[1, 1250, 1, 1, 1, 1, 1, 1, 1]\" data-bind-scroll-on-start=\"true\">\n<div id=\"mntl-sc-block_1-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--finalverdict beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-finalverdict\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_1-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Key Takeaways<\/p>\n<div id=\"mntl-sc-block-callout-body_1-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<ul>\n<li>Castor oil is known for its nutritional benefits, promoting a healthier scalp environment that supports better hair growth.<\/li>\n<li>Experts suggest using castor oil sparingly, applying it once a week for 20 to 30 minutes for best results.<\/li>\n<li>While castor oil is praised for its nourishing properties, scientific evidence supporting its hair growth claims is still lacking.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p id=\"mntl-sc-block_2-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> It seems as if every other day there&#8217;s a new skin or hair ingredient en vogue that&#8217;s suddenly deemed the miracle worker we&#8217;ve been waiting for. Considering that we live in the age of TikTok and light-speed trend cycles, this isn&#8217;t necessarily surprising, but it does make us question what <em>does<\/em> and doesn&#8217;t work. For moments like this, we dive head-first into the research (and call upon the experts), to determine whether our beauty routine <em>actually<\/em> needs another step. Currently, we&#8217;re studying up on castor oil.\n<\/p>\n<p id=\"mntl-sc-block_4-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Believe it or not, castor oil has been used for millennia. The natural oil is believed to have properties that encourage hair growth, health, and thickness. And being that it supposedly has such an effect on hair, castor oil can be found in many hair care products, as well as brow and lash serums.\n<\/p>\n<p id=\"mntl-sc-block_6-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> To set the record we straight\u2014and manage expectations of the alleged miracle worker\u2014we spoke to three experts about its hair growth potential and what we should be wary of. Below, find insights from a hair expert, cosmetic chemist, and board-certified dermatologist, and learn everything there is to know about using castor oil for your hair.\n<\/p>\n<div id=\"mntl-sc-block_8-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--meetourexpert beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-meetourexpert\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_2-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Meet the Experts<\/p>\n<div id=\"mntl-sc-block-callout-body_2-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<ul>\n<li>Rachel Nazarian, MD, is a board-certified dermatologist at Schweiger Dermatology Group in NYC. She is experienced in a range of dermatologic practices including cosmetic treatments, skin cancer, general dermatology, and dermatologic surgery.<\/li>\n<li>Philip B. is a Los Angeles-based hair and scalp expert, as well as the founder of Philip B. Haircare.<\/li>\n<li>Ginger King is a cosmetic chemist, owner of product development firm Grace Kingdom Beauty, and founder of lip care brand Fan Love Beauty.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_9-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> What Is Castor Oil? <\/span><\/h2>\n<p id=\"mntl-sc-block_10-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Castor oil is a nutrient-dense oil extracted from pressed seeds of the castor oil plant Ricinus communis, which is mainly grown in India, South America, Africa, and China. The produced oil typically has a pale-yellow or almost colorless appearance with a subtle mild scent. It has many medicinal, household, and pharmaceutical uses and is also widely used in skincare and cosmetics for its potential healing properties.\n<\/p>\n<div id=\"mntl-sc-block_12-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--ffingredients beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-ffingredients\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_3-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Castor Oil<\/p>\n<div id=\"mntl-sc-block-callout-body_3-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<p><strong>Type of Ingredient<\/strong>: Hydrator, strengthener.<\/p>\n<p><strong>Main benefits<\/strong>: Nourishes the scalp and protects strands.<\/p>\n<p><strong>Who should use it<\/strong>: Those who are not pregnant (anecdotal evidence suggests that castor oil can induce labor) and those looking for a treatment to nourish dry strands.<\/p>\n<p><strong>How often can you use it<\/strong>: Use once per week for 20-30 minutes as a treatment. It is an oil, so a little goes a long way.<\/p>\n<p><strong>Works well with<\/strong>: Carrier oils such as coconut (or other ingredients that impart moisture to hair).<\/p>\n<p><strong>Don&#8217;t use with<\/strong>: There are no known ingredients that negatively interfere with castor oil.<\/p>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_13-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Benefits of Castor Oil for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_14-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> The use of castor oil for hair dates back to 4000 BC in ancient Egypt. Castor oil has been claimed to have a slew of benefits, including strengthening strands, promoting hair growth, and nourishing dry scalp. And while the oil itself likely can&#8217;t make the hair grow, it&#8217;s loved for its ability to create a healthier environment on the scalp that makes for way better hair growth.\n<\/p>\n<ul id=\"mntl-sc-block_16-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Nourishing<\/strong><strong>and strengthening for strands<\/strong>: &#8220;Castor oil is nourishing,&#8221; says King. Nazarian concurs, saying that unlike most other oils, which can veer mostly fatty, castor oil has a nutritional makeup composed of a powerful mix of proteins, vitamins, fatty acids, <em>and<\/em> antioxidants (aka the internal workings of all the buzziest hair supplements on the market). Thus, it comes as no surprise that the oil is claimed to be a wonderful way to nurture the scalp and fragile hair follicles while simultaneously encouraging healthier, faster hair growth. For this reason, castor oil has increasingly become a key ingredient in hair products.<\/li>\n<li><strong>Might help with hair loss<\/strong>: While there&#8217;s no concrete scientific evidence on why castor oil is so beneficial for the hair, it&#8217;s certainly a well-loved oil in the beauty industry. According to Nazarian, castor oil can in fact be useful in certain cases of hair loss. Others aren&#8217;t so convinced. King, for instance, says &#8220;there are no scientific studies on this or FDA approval for use for hair growth.&#8221;<\/li>\n<li><strong>Has antimicrobial properties: <\/strong>When it comes to scalp care, hair and scalp expert Philip B. agrees that castor oil has antimicrobial properties that may be useful in fighting off bacterial or fungal overgrowth on the scalp, but with a caveat. &#8220;It&#8217;s true that fungal overgrowth can lead to hair-damaging scalp inflammation and castor oil can help with that,&#8221; he says.<\/li>\n<li><strong>Aids in scalp flaking:<\/strong> For those who experience flaking as a result of dry scalp, castor oil can help. &#8220;Castor oil is known to be an effective and gentle method of cleansing the skin,&#8221; Nazarian explains. &#8220;Because it&#8217;s polarized, the castor oil actually attracts dirt and effectively cleanses the skin.&#8221;<\/li>\n<li><strong>Protects against breakage<\/strong>: The idea is that the high content of ricinoleic acid may help improve blood circulation in the scalp, which might lead to nutrition for the hair follicles, stronger strands, and less breakage. Plus, castor oil is a humectant, which means it&#8217;s an excellent vehicle for locking in moisture and shine. And as we know, moisturized (aka not dry, damaged, and split-prone) hair may be more likely to grow at a healthier rate.<\/li>\n<li><strong>Increases the absorption of other products<\/strong>: In addition to its efficacy for the scalp, Nazarian tells us castor oil is thought to enhance and increase the absorption of other products. If incorporated into your normal hair ritual, your other products might actually penetrate more effectively, which will only do your hair&#8217;s health and growth ambition a favor in the long run. After all, a residue-filled scalp does not make for a healthy mane.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_18-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Hair Type Considerations <\/span><\/h2>\n<p id=\"mntl-sc-block_19-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Castor oil is best used on those with dry or flaky scalps and brittle hair\u2014it is an oil, so it might be overkill for use on those who already have oily hair.\n<\/p>\n<p id=\"mntl-sc-block_21-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> There&#8217;s also anecdotal evidence to suggest it can be effective on the eyelashes and eyebrows. Nazarian says that while the oil is a known irritant for many, strategically applying a very small amount to eyelashes or eyebrows may help induce regrowth through a specific, localized region. If you&#8217;re concerned about getting an allergic reaction, do a test patch on a small area of your skin before applying it to these sensitive areas.<\/p>\n<h2 id=\"mntl-sc-block_23-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> How to Use Castor Oil for Hair <\/span><\/h2>\n<ul id=\"mntl-sc-block_24-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Apply sparingly:<\/strong> Since it is an oil, a little will go a long way\u2014it&#8217;s all about moderation and being cautious. &#8220;You want to avoid overdoing it or getting it in your eyes and other sensitive areas,&#8221; Nazarian warns. That said, experts seem to agree the oil is safe enough to cautiously experiment with at home. Start out with a patch test, keep expectations realistic, and heed their advice of using a small amount during application to ensure you don&#8217;t experience any adverse reactions. It&#8217;s also often recommended you don&#8217;t use it more than once a week.<\/li>\n<li><strong>Use as a 20-minute treatment:<\/strong> To use, warm the oil in your palms before working it through the roots of your hair and brushing it out toward the ends. Leave it in for 15 to 20 minutes minimum, and then shampoo it out of your hair. You can wet your hair beforehand in order to make the oil soak in better. Do note that, for some, castor oil can be difficult to work with because of its tendency to stick. &#8220;Because castor oil is highly occlusive and a big &#8216;coater,&#8217; if you put it directly on your hair, you will be stuck with it for days and days,&#8221; explains Philip B.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_26-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> How to Use Castor Oil on Eyebrows and Lashes <\/span><\/h2>\n<p id=\"mntl-sc-block_27-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Many swear by using castor oil on brows and lashes to reap the same benefits as those outlined here.\n<\/p>\n<ol id=\"mntl-sc-block_29-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li>To apply castor oil to your eyelashes, make sure they&#8217;re completely clean and free of makeup.<\/li>\n<li>Dip a cotton swab into a small amount of oil, close your eyes, and gently swipe the oil across your lashes, being mindful that it doesn&#8217;t get in your eyes.<\/li>\n<li>Try the same technique for brows, applying the oil with a cotton swab and using a tissue to ensure it doesn&#8217;t go beyond the brow line, into your eyes. As Philip B notes, it can be sticky, just as it can be on the head.<\/li>\n<\/ol>\n<div id=\"mntl-sc-block_31-0\" class=\"comp mntl-sc-block beauty-sc-block-faq--expanded beauty-sc-block-faq mntl-sc-block-faq mntl-block is-expanded\">\n<div id=\"mntl-sc-block-faq__title_1-0\" class=\"comp mntl-sc-block-faq__title mntl-text-block\">FAQ<\/div>\n<ul id=\"mntl-sc-block-faq__content_1-0\" class=\"comp mntl-sc-block-faq__content mntl-accordion \" data-tracking-container=\"true\">\n<li class=\"accordion__item js-accordion-item is-active\" data-ordinal=\"1\">\n<div class=\"accordion__header js-accordion-trigger\" id=\"mntl-accordion__item_1-0-section-0\"><span class=\"accordion__title\">Can I leave castor oil in my hair overnight?<\/span><\/div>\n<div class=\"accordion__body\">\n<div id=\"mntl-accordion__content_1-0\" class=\"comp mntl-accordion__content\">\n<div class=\"faq-accordion__item-answer\">\n<p>According to herbalist Katie Pande, overnight castor oil treatments can be great for addressing split ends. \u201cFor the ultimate restorative hair mask, blend with coconut oil and leave it on overnight to work its magic on your mane,&#8221; she says.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<li class=\"accordion__item js-accordion-item is-active\" data-ordinal=\"2\">\n<div class=\"accordion__header js-accordion-trigger\" id=\"mntl-accordion__item_2-0-section-1\"><span class=\"accordion__title\">Does castor oil stop gray hair?<\/span><\/div>\n<div class=\"accordion__body\">\n<div id=\"mntl-accordion__content_2-0\" class=\"comp mntl-accordion__content\">\n<div class=\"faq-accordion__item-answer\">\n<p>There are no studies to support the use of castor oil for preventing or reversing gray hair. Indeed, there is no way to reverse gray hair: \u201cOnce the melanocyte stem cells in the bulge region of the follicle are depleted it is irreversible,\u201d Zenovia Gabriel, MD, told us. Howard Sobel, MD, says that while there is no way to prevent going gray, managing your stress, avoiding smoking, and making sure you&#8217;re getting vitamins D and B12 can help keep hair from graying prematurely.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div id=\"citation-sources_1-0\" class=\"comp citation-sources mntl-article-sources mntl-expandable-block u-article-styles\" data-scroll-offset=\"70\">\n<div class=\"loc toggle-content\">\n<div id=\"mntl-article-sources__wrapper_1-0\" class=\"comp mntl-article-sources__wrapper mntl-block\" data-click-tracked=\"true\"><span id=\"mntl-article-sources__heading_1-0\" class=\"comp mntl-article-sources__heading mntl-text-block\">Article Sources<\/span><\/div>\n<\/div>\n<div class=\"loc expandable-content\">\n<div id=\"citation-sources__text_1-0\" class=\"comp citation-sources__text mntl-text-block\">Byrdie takes every opportunity to use high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial guidelines to learn more about how we keep our content accurate, reliable and trustworthy.<\/div>\n<div id=\"mntl-article-sources__citation-sources_1-0\" class=\"comp mntl-article-sources__citation-sources mntl-citation-sources mntl-sources\" data-tracking-container=\"true\">\n<ol class=\"mntl-sources__content\">\n<li class=\"mntl-sources__source\" id=\"citation-1\">\n<p>PubChem. (n.d.).\u00a0<em>Concept 13508<\/em>. Retrieved July 21, 2023, from https:\/\/pubchem.ncbi.nlm.nih.gov\/compound\/Castor-Oil<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-2\">\n<p>Coconut, castor, and argan oil for hair in skin of color patients: A systematic review. (n.d.).\u00a0<em>JDDonline &#8211; Journal of Drugs in Dermatology<\/em>. Retrieved July 21, 2023, from https:\/\/jddonline.com\/articles\/coconut-castor-and-argan-oil-for-hair-in-skin-of-color-patients-a-systematic-review-s1545961622p0751x\/<\/p>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"loc article-post-content\">\n<div id=\"beauty-breadcrumbs--chips_1-0\" class=\"comp beauty-breadcrumbs--chips mntl-universal-breadcrumbs--chips mntl-block\">\n<div id=\"mntl-breadcrumbs__read-more_1-0\" class=\"comp mntl-breadcrumbs__read-more mntl-text-block text-title-100\">Read more:<\/div>\n<ul id=\"mntl-universal-breadcrumbs_1-0\" class=\"comp mntl-universal-breadcrumbs mntl-block text-label-300 breadcrumbs\" data-tracking-container=\"true\">\n<li id=\"mntl-breadcrumbs__item_1-0\" class=\"comp mntl-breadcrumbs__item mntl-block\"><span class=\"link__wrapper\">Hair<\/span><\/li>\n<li id=\"mntl-breadcrumbs__item_2-0\" class=\"comp mntl-breadcrumbs__item mntl-block\"><span class=\"link__wrapper\">Hair Concerns<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/article>\n<div class=\"loc article-content\">\n<div id=\"article__broad-video-jw_1-0\" class=\"comp article__broad-video-jw mntl-jwplayer-broad mntl-block is-hidden\" data-pixel-depth=\"100\">\n<div id=\"mntl-jwplayer-broad__title_1-0\" class=\"comp mntl-jwplayer-broad__title mntl-block\"><button id=\"mntl-jwplayer-broad__title-icon--close_1-0\" class=\"comp mntl-jwplayer-broad__title-icon--close mntl-block text-label-100\" data-click-tracked=\"false\"><span id=\"mntl-text-block_2-0\" class=\"comp mntl-text-block\">Close<\/span><\/button><\/div>\n<\/div>\n<div id=\"mntl-block_2-0\" class=\"comp mntl-block article__body right-rail\">\n<figure id=\"mntl-universal-primary-image_1-0\" class=\"comp mntl-universal-primary-image primary-image\" data-tracking-container=\"true\">\n<div class=\"primary-image__media\">\n<div class=\"img-placeholder\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/ne0hDkdaIekoesG9rOygH6EbCoo=\/1500x0\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/castoroil-836c0c401ae74dd794fe40f7e88267f3.png\" width=\"2000\" height=\"1500\" alt=\"castor oil and hair brush\" class=\" primary-image__image mntl-primary-image--blurry\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.byrdie.com\/thmb\/ne0hDkdaIekoesG9rOygH6EbCoo=\/1500x0\/filters:no_upscale():max_bytes(150000):strip_icc():format(webp)\/castoroil-836c0c401ae74dd794fe40f7e88267f3.png\" width=\"2000\" height=\"1500\" class=\"loaded primary-img--noscript primary-image__image mntl-primary-image--blurry\" alt=\"castor oil and hair brush\"><\/div>\n<\/div><figcaption id=\"primary-image__figcap_1-0\" class=\"comp primary-image__figcap mntl-figure-caption figure-article-caption\"><span class=\"figure-article-caption-owner\"><\/p>\n<p>Liz deSousa for BYRDIE<\/p>\n<p><\/span><\/figcaption><\/figure>\n<div id=\"mntl-sc-page_1-0\" class=\"comp mntl-sc-page mntl-block\" data-sc-sticky-offset=\"125\" data-sc-ad-label-height=\"16\" data-sc-ad-track-spacing=\"100\" data-sc-min-track-height=\"250\" data-sc-max-track-height=\"600\" data-sc-breakpoint=\"50em\" data-sc-load-immediate=\"5\" data-sc-content-positions=\"[1, 1250, 1, 1, 1, 1, 1, 1, 1]\" data-bind-scroll-on-start=\"true\">\n<div id=\"mntl-sc-block_1-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--finalverdict beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-finalverdict\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_1-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Key Takeaways<\/p>\n<div id=\"mntl-sc-block-callout-body_1-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<ul>\n<li>Castor oil is known for its nutritional benefits, promoting a healthier scalp environment that supports better hair growth.<\/li>\n<li>Experts suggest using castor oil sparingly, applying it once a week for 20 to 30 minutes for best results.<\/li>\n<li>While castor oil is praised for its nourishing properties, scientific evidence supporting its hair growth claims is still lacking.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p id=\"mntl-sc-block_2-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> It seems as if every other day there&#8217;s a new skin or hair ingredient en vogue that&#8217;s suddenly deemed the miracle worker we&#8217;ve been waiting for. Considering that we live in the age of TikTok and light-speed trend cycles, this isn&#8217;t necessarily surprising, but it does make us question what <em>does<\/em> and doesn&#8217;t work. For moments like this, we dive head-first into the research (and call upon the experts), to determine whether our beauty routine <em>actually<\/em> needs another step. Currently, we&#8217;re studying up on castor oil.\n<\/p>\n<p id=\"mntl-sc-block_4-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Believe it or not, castor oil has been used for millennia. The natural oil is believed to have properties that encourage hair growth, health, and thickness. And being that it supposedly has such an effect on hair, castor oil can be found in many hair care products, as well as brow and lash serums.\n<\/p>\n<p id=\"mntl-sc-block_6-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> To set the record we straight\u2014and manage expectations of the alleged miracle worker\u2014we spoke to three experts about its hair growth potential and what we should be wary of. Below, find insights from a hair expert, cosmetic chemist, and board-certified dermatologist, and learn everything there is to know about using castor oil for your hair.\n<\/p>\n<div id=\"mntl-sc-block_8-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--meetourexpert beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-meetourexpert\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_2-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Meet the Experts<\/p>\n<div id=\"mntl-sc-block-callout-body_2-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<ul>\n<li>Rachel Nazarian, MD, is a board-certified dermatologist at Schweiger Dermatology Group in NYC. She is experienced in a range of dermatologic practices including cosmetic treatments, skin cancer, general dermatology, and dermatologic surgery.<\/li>\n<li>Philip B. is a Los Angeles-based hair and scalp expert, as well as the founder of Philip B. Haircare.<\/li>\n<li>Ginger King is a cosmetic chemist, owner of product development firm Grace Kingdom Beauty, and founder of lip care brand Fan Love Beauty.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_9-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> What Is Castor Oil? <\/span><\/h2>\n<p id=\"mntl-sc-block_10-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Castor oil is a nutrient-dense oil extracted from pressed seeds of the castor oil plant Ricinus communis, which is mainly grown in India, South America, Africa, and China. The produced oil typically has a pale-yellow or almost colorless appearance with a subtle mild scent. It has many medicinal, household, and pharmaceutical uses and is also widely used in skincare and cosmetics for its potential healing properties.\n<\/p>\n<div id=\"mntl-sc-block_12-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--ffingredients beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-ffingredients\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_3-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Castor Oil<\/p>\n<div id=\"mntl-sc-block-callout-body_3-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<p><strong>Type of Ingredient<\/strong>: Hydrator, strengthener.<\/p>\n<p><strong>Main benefits<\/strong>: Nourishes the scalp and protects strands.<\/p>\n<p><strong>Who should use it<\/strong>: Those who are not pregnant (anecdotal evidence suggests that castor oil can induce labor) and those looking for a treatment to nourish dry strands.<\/p>\n<p><strong>How often can you use it<\/strong>: Use once per week for 20-30 minutes as a treatment. It is an oil, so a little goes a long way.<\/p>\n<p><strong>Works well with<\/strong>: Carrier oils such as coconut (or other ingredients that impart moisture to hair).<\/p>\n<p><strong>Don&#8217;t use with<\/strong>: There are no known ingredients that negatively interfere with castor oil.<\/p>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_13-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Benefits of Castor Oil for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_14-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> The use of castor oil for hair dates back to 4000 BC in ancient Egypt. Castor oil has been claimed to have a slew of benefits, including strengthening strands, promoting hair growth, and nourishing dry scalp. And while the oil itself likely can&#8217;t make the hair grow, it&#8217;s loved for its ability to create a healthier environment on the scalp that makes for way better hair growth.\n<\/p>\n<ul id=\"mntl-sc-block_16-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Nourishing<\/strong><strong>and strengthening for strands<\/strong>: &#8220;Castor oil is nourishing,&#8221; says King. Nazarian concurs, saying that unlike most other oils, which can veer mostly fatty, castor oil has a nutritional makeup composed of a powerful mix of proteins, vitamins, fatty acids, <em>and<\/em> antioxidants (aka the internal workings of all the buzziest hair supplements on the market). Thus, it comes as no surprise that the oil is claimed to be a wonderful way to nurture the scalp and fragile hair follicles while simultaneously encouraging healthier, faster hair growth. For this reason, castor oil has increasingly become a key ingredient in hair products.<\/li>\n<li><strong>Might help with hair loss<\/strong>: While there&#8217;s no concrete scientific evidence on why castor oil is so beneficial for the hair, it&#8217;s certainly a well-loved oil in the beauty industry. According to Nazarian, castor oil can in fact be useful in certain cases of hair loss. Others aren&#8217;t so convinced. King, for instance, says &#8220;there are no scientific studies on this or FDA approval for use for hair growth.&#8221;<\/li>\n<li><strong>Has antimicrobial properties: <\/strong>When it comes to scalp care, hair and scalp expert Philip B. agrees that castor oil has antimicrobial properties that may be useful in fighting off bacterial or fungal overgrowth on the scalp, but with a caveat. &#8220;It&#8217;s true that fungal overgrowth can lead to hair-damaging scalp inflammation and castor oil can help with that,&#8221; he says.<\/li>\n<li><strong>Aids in scalp flaking:<\/strong> For those who experience flaking as a result of dry scalp, castor oil can help. &#8220;Castor oil is known to be an effective and gentle method of cleansing the skin,&#8221; Nazarian explains. &#8220;Because it&#8217;s polarized, the castor oil actually attracts dirt and effectively cleanses the skin.&#8221;<\/li>\n<li><strong>Protects against breakage<\/strong>: The idea is that the high content of ricinoleic acid may help improve blood circulation in the scalp, which might lead to nutrition for the hair follicles, stronger strands, and less breakage. Plus, castor oil is a humectant, which means it&#8217;s an excellent vehicle for locking in moisture and shine. And as we know, moisturized (aka not dry, damaged, and split-prone) hair may be more likely to grow at a healthier rate.<\/li>\n<li><strong>Increases the absorption of other products<\/strong>: In addition to its efficacy for the scalp, Nazarian tells us castor oil is thought to enhance and increase the absorption of other products. If incorporated into your normal hair ritual, your other products might actually penetrate more effectively, which will only do your hair&#8217;s health and growth ambition a favor in the long run. After all, a residue-filled scalp does not make for a healthy mane.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_18-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Hair Type Considerations <\/span><\/h2>\n<p id=\"mntl-sc-block_19-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Castor oil is best used on those with dry or flaky scalps and brittle hair\u2014it is an oil, so it might be overkill for use on those who already have oily hair.\n<\/p>\n<p id=\"mntl-sc-block_21-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> There&#8217;s also anecdotal evidence to suggest it can be effective on the eyelashes and eyebrows. Nazarian says that while the oil is a known irritant for many, strategically applying a very small amount to eyelashes or eyebrows may help induce regrowth through a specific, localized region. If you&#8217;re concerned about getting an allergic reaction, do a test patch on a small area of your skin before applying it to these sensitive areas.<\/p>\n<h2 id=\"mntl-sc-block_23-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> How to Use Castor Oil for Hair <\/span><\/h2>\n<ul id=\"mntl-sc-block_24-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Apply sparingly:<\/strong> Since it is an oil, a little will go a long way\u2014it&#8217;s all about moderation and being cautious. &#8220;You want to avoid overdoing it or getting it in your eyes and other sensitive areas,&#8221; Nazarian warns. That said, experts seem to agree the oil is safe enough to cautiously experiment with at home. Start out with a patch test, keep expectations realistic, and heed their advice of using a small amount during application to ensure you don&#8217;t experience any adverse reactions. It&#8217;s also often recommended you don&#8217;t use it more than once a week.<\/li>\n<li><strong>Use as a 20-minute treatment:<\/strong> To use, warm the oil in your palms before working it through the roots of your hair and brushing it out toward the ends. Leave it in for 15 to 20 minutes minimum, and then shampoo it out of your hair. You can wet your hair beforehand in order to make the oil soak in better. Do note that, for some, castor oil can be difficult to work with because of its tendency to stick. &#8220;Because castor oil is highly occlusive and a big &#8216;coater,&#8217; if you put it directly on your hair, you will be stuck with it for days and days,&#8221; explains Philip B.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_26-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> How to Use Castor Oil on Eyebrows and Lashes <\/span><\/h2>\n<p id=\"mntl-sc-block_27-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Many swear by using castor oil on brows and lashes to reap the same benefits as those outlined here.\n<\/p>\n<ol id=\"mntl-sc-block_29-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li>To apply castor oil to your eyelashes, make sure they&#8217;re completely clean and free of makeup.<\/li>\n<li>Dip a cotton swab into a small amount of oil, close your eyes, and gently swipe the oil across your lashes, being mindful that it doesn&#8217;t get in your eyes.<\/li>\n<li>Try the same technique for brows, applying the oil with a cotton swab and using a tissue to ensure it doesn&#8217;t go beyond the brow line, into your eyes. As Philip B notes, it can be sticky, just as it can be on the head.<\/li>\n<\/ol>\n<div id=\"mntl-sc-block_31-0\" class=\"comp mntl-sc-block beauty-sc-block-faq--expanded beauty-sc-block-faq mntl-sc-block-faq mntl-block is-expanded\">\n<div id=\"mntl-sc-block-faq__title_1-0\" class=\"comp mntl-sc-block-faq__title mntl-text-block\">FAQ<\/div>\n<ul id=\"mntl-sc-block-faq__content_1-0\" class=\"comp mntl-sc-block-faq__content mntl-accordion \" data-tracking-container=\"true\">\n<li class=\"accordion__item js-accordion-item is-active\" data-ordinal=\"1\">\n<div class=\"accordion__header js-accordion-trigger\" id=\"mntl-accordion__item_1-0-section-0\"><span class=\"accordion__title\">Can I leave castor oil in my hair overnight?<\/span><\/div>\n<div class=\"accordion__body\">\n<div id=\"mntl-accordion__content_1-0\" class=\"comp mntl-accordion__content\">\n<div class=\"faq-accordion__item-answer\">\n<p>According to herbalist Katie Pande, overnight castor oil treatments can be great for addressing split ends. \u201cFor the ultimate restorative hair mask, blend with coconut oil and leave it on overnight to work its magic on your mane,&#8221; she says.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<li class=\"accordion__item js-accordion-item is-active\" data-ordinal=\"2\">\n<div class=\"accordion__header js-accordion-trigger\" id=\"mntl-accordion__item_2-0-section-1\"><span class=\"accordion__title\">Does castor oil stop gray hair?<\/span><\/div>\n<div class=\"accordion__body\">\n<div id=\"mntl-accordion__content_2-0\" class=\"comp mntl-accordion__content\">\n<div class=\"faq-accordion__item-answer\">\n<p>There are no studies to support the use of castor oil for preventing or reversing gray hair. Indeed, there is no way to reverse gray hair: \u201cOnce the melanocyte stem cells in the bulge region of the follicle are depleted it is irreversible,\u201d Zenovia Gabriel, MD, told us. Howard Sobel, MD, says that while there is no way to prevent going gray, managing your stress, avoiding smoking, and making sure you&#8217;re getting vitamins D and B12 can help keep hair from graying prematurely.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div id=\"citation-sources_1-0\" class=\"comp citation-sources mntl-article-sources mntl-expandable-block u-article-styles\" data-scroll-offset=\"70\">\n<div class=\"loc toggle-content\">\n<div id=\"mntl-article-sources__wrapper_1-0\" class=\"comp mntl-article-sources__wrapper mntl-block\" data-click-tracked=\"true\"><span id=\"mntl-article-sources__heading_1-0\" class=\"comp mntl-article-sources__heading mntl-text-block\">Article Sources<\/span><\/div>\n<\/div>\n<div class=\"loc expandable-content\">\n<div id=\"citation-sources__text_1-0\" class=\"comp citation-sources__text mntl-text-block\">Byrdie takes every opportunity to use high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial guidelines to learn more about how we keep our content accurate, reliable and trustworthy.<\/div>\n<div id=\"mntl-article-sources__citation-sources_1-0\" class=\"comp mntl-article-sources__citation-sources mntl-citation-sources mntl-sources\" data-tracking-container=\"true\">\n<ol class=\"mntl-sources__content\">\n<li class=\"mntl-sources__source\" id=\"citation-1\">\n<p>PubChem. (n.d.).\u00a0<em>Concept 13508<\/em>. Retrieved July 21, 2023, from https:\/\/pubchem.ncbi.nlm.nih.gov\/compound\/Castor-Oil<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-2\">\n<p>Coconut, castor, and argan oil for hair in skin of color patients: A systematic review. (n.d.).\u00a0<em>JDDonline &#8211; Journal of Drugs in Dermatology<\/em>. Retrieved July 21, 2023, from https:\/\/jddonline.com\/articles\/coconut-castor-and-argan-oil-for-hair-in-skin-of-color-patients-a-systematic-review-s1545961622p0751x\/<\/p>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"mntl-sc-page_1-0\" class=\"comp mntl-sc-page mntl-block\" data-sc-sticky-offset=\"125\" data-sc-ad-label-height=\"16\" data-sc-ad-track-spacing=\"100\" data-sc-min-track-height=\"250\" data-sc-max-track-height=\"600\" data-sc-breakpoint=\"50em\" data-sc-load-immediate=\"5\" data-sc-content-positions=\"[1, 1250, 1, 1, 1, 1, 1, 1, 1]\" data-bind-scroll-on-start=\"true\">\n<div id=\"mntl-sc-block_1-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--finalverdict beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-finalverdict\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_1-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Key Takeaways<\/p>\n<div id=\"mntl-sc-block-callout-body_1-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<ul>\n<li>Castor oil is known for its nutritional benefits, promoting a healthier scalp environment that supports better hair growth.<\/li>\n<li>Experts suggest using castor oil sparingly, applying it once a week for 20 to 30 minutes for best results.<\/li>\n<li>While castor oil is praised for its nourishing properties, scientific evidence supporting its hair growth claims is still lacking.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p id=\"mntl-sc-block_2-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> It seems as if every other day there&#8217;s a new skin or hair ingredient en vogue that&#8217;s suddenly deemed the miracle worker we&#8217;ve been waiting for. Considering that we live in the age of TikTok and light-speed trend cycles, this isn&#8217;t necessarily surprising, but it does make us question what <em>does<\/em> and doesn&#8217;t work. For moments like this, we dive head-first into the research (and call upon the experts), to determine whether our beauty routine <em>actually<\/em> needs another step. Currently, we&#8217;re studying up on castor oil.\n<\/p>\n<p id=\"mntl-sc-block_4-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Believe it or not, castor oil has been used for millennia. The natural oil is believed to have properties that encourage hair growth, health, and thickness. And being that it supposedly has such an effect on hair, castor oil can be found in many hair care products, as well as brow and lash serums.\n<\/p>\n<p id=\"mntl-sc-block_6-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> To set the record we straight\u2014and manage expectations of the alleged miracle worker\u2014we spoke to three experts about its hair growth potential and what we should be wary of. Below, find insights from a hair expert, cosmetic chemist, and board-certified dermatologist, and learn everything there is to know about using castor oil for your hair.\n<\/p>\n<div id=\"mntl-sc-block_8-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--meetourexpert beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-meetourexpert\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_2-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Meet the Experts<\/p>\n<div id=\"mntl-sc-block-callout-body_2-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<ul>\n<li>Rachel Nazarian, MD, is a board-certified dermatologist at Schweiger Dermatology Group in NYC. She is experienced in a range of dermatologic practices including cosmetic treatments, skin cancer, general dermatology, and dermatologic surgery.<\/li>\n<li>Philip B. is a Los Angeles-based hair and scalp expert, as well as the founder of Philip B. Haircare.<\/li>\n<li>Ginger King is a cosmetic chemist, owner of product development firm Grace Kingdom Beauty, and founder of lip care brand Fan Love Beauty.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_9-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> What Is Castor Oil? <\/span><\/h2>\n<p id=\"mntl-sc-block_10-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Castor oil is a nutrient-dense oil extracted from pressed seeds of the castor oil plant Ricinus communis, which is mainly grown in India, South America, Africa, and China. The produced oil typically has a pale-yellow or almost colorless appearance with a subtle mild scent. It has many medicinal, household, and pharmaceutical uses and is also widely used in skincare and cosmetics for its potential healing properties.\n<\/p>\n<div id=\"mntl-sc-block_12-0\" class=\"comp mntl-sc-block beauty-sc-block-callout--ffingredients beauty-sc-block-callout mntl-sc-block-callout mntl-block theme-ffingredients\" data-tracking-id=\"mntl-sc-block-callout\" data-tracking-container=\"true\">\n<p id=\"mntl-sc-block-callout-heading_3-0\" class=\"comp mntl-sc-block-callout-heading mntl-text-block\">Castor Oil<\/p>\n<div id=\"mntl-sc-block-callout-body_3-0\" class=\"comp mntl-sc-block-callout-body mntl-text-block\">\n<p><strong>Type of Ingredient<\/strong>: Hydrator, strengthener.<\/p>\n<p><strong>Main benefits<\/strong>: Nourishes the scalp and protects strands.<\/p>\n<p><strong>Who should use it<\/strong>: Those who are not pregnant (anecdotal evidence suggests that castor oil can induce labor) and those looking for a treatment to nourish dry strands.<\/p>\n<p><strong>How often can you use it<\/strong>: Use once per week for 20-30 minutes as a treatment. It is an oil, so a little goes a long way.<\/p>\n<p><strong>Works well with<\/strong>: Carrier oils such as coconut (or other ingredients that impart moisture to hair).<\/p>\n<p><strong>Don&#8217;t use with<\/strong>: There are no known ingredients that negatively interfere with castor oil.<\/p>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_13-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Benefits of Castor Oil for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_14-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> The use of castor oil for hair dates back to 4000 BC in ancient Egypt. Castor oil has been claimed to have a slew of benefits, including strengthening strands, promoting hair growth, and nourishing dry scalp. And while the oil itself likely can&#8217;t make the hair grow, it&#8217;s loved for its ability to create a healthier environment on the scalp that makes for way better hair growth.\n<\/p>\n<ul id=\"mntl-sc-block_16-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Nourishing<\/strong><strong>and strengthening for strands<\/strong>: &#8220;Castor oil is nourishing,&#8221; says King. Nazarian concurs, saying that unlike most other oils, which can veer mostly fatty, castor oil has a nutritional makeup composed of a powerful mix of proteins, vitamins, fatty acids, <em>and<\/em> antioxidants (aka the internal workings of all the buzziest hair supplements on the market). Thus, it comes as no surprise that the oil is claimed to be a wonderful way to nurture the scalp and fragile hair follicles while simultaneously encouraging healthier, faster hair growth. For this reason, castor oil has increasingly become a key ingredient in hair products.<\/li>\n<li><strong>Might help with hair loss<\/strong>: While there&#8217;s no concrete scientific evidence on why castor oil is so beneficial for the hair, it&#8217;s certainly a well-loved oil in the beauty industry. According to Nazarian, castor oil can in fact be useful in certain cases of hair loss. Others aren&#8217;t so convinced. King, for instance, says &#8220;there are no scientific studies on this or FDA approval for use for hair growth.&#8221;<\/li>\n<li><strong>Has antimicrobial properties: <\/strong>When it comes to scalp care, hair and scalp expert Philip B. agrees that castor oil has antimicrobial properties that may be useful in fighting off bacterial or fungal overgrowth on the scalp, but with a caveat. &#8220;It&#8217;s true that fungal overgrowth can lead to hair-damaging scalp inflammation and castor oil can help with that,&#8221; he says.<\/li>\n<li><strong>Aids in scalp flaking:<\/strong> For those who experience flaking as a result of dry scalp, castor oil can help. &#8220;Castor oil is known to be an effective and gentle method of cleansing the skin,&#8221; Nazarian explains. &#8220;Because it&#8217;s polarized, the castor oil actually attracts dirt and effectively cleanses the skin.&#8221;<\/li>\n<li><strong>Protects against breakage<\/strong>: The idea is that the high content of ricinoleic acid may help improve blood circulation in the scalp, which might lead to nutrition for the hair follicles, stronger strands, and less breakage. Plus, castor oil is a humectant, which means it&#8217;s an excellent vehicle for locking in moisture and shine. And as we know, moisturized (aka not dry, damaged, and split-prone) hair may be more likely to grow at a healthier rate.<\/li>\n<li><strong>Increases the absorption of other products<\/strong>: In addition to its efficacy for the scalp, Nazarian tells us castor oil is thought to enhance and increase the absorption of other products. If incorporated into your normal hair ritual, your other products might actually penetrate more effectively, which will only do your hair&#8217;s health and growth ambition a favor in the long run. After all, a residue-filled scalp does not make for a healthy mane.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_18-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Hair Type Considerations <\/span><\/h2>\n<p id=\"mntl-sc-block_19-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Castor oil is best used on those with dry or flaky scalps and brittle hair\u2014it is an oil, so it might be overkill for use on those who already have oily hair.\n<\/p>\n<p id=\"mntl-sc-block_21-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> There&#8217;s also anecdotal evidence to suggest it can be effective on the eyelashes and eyebrows. Nazarian says that while the oil is a known irritant for many, strategically applying a very small amount to eyelashes or eyebrows may help induce regrowth through a specific, localized region. If you&#8217;re concerned about getting an allergic reaction, do a test patch on a small area of your skin before applying it to these sensitive areas.<\/p>\n<h2 id=\"mntl-sc-block_23-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> How to Use Castor Oil for Hair <\/span><\/h2>\n<ul id=\"mntl-sc-block_24-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Apply sparingly:<\/strong> Since it is an oil, a little will go a long way\u2014it&#8217;s all about moderation and being cautious. &#8220;You want to avoid overdoing it or getting it in your eyes and other sensitive areas,&#8221; Nazarian warns. That said, experts seem to agree the oil is safe enough to cautiously experiment with at home. Start out with a patch test, keep expectations realistic, and heed their advice of using a small amount during application to ensure you don&#8217;t experience any adverse reactions. It&#8217;s also often recommended you don&#8217;t use it more than once a week.<\/li>\n<li><strong>Use as a 20-minute treatment:<\/strong> To use, warm the oil in your palms before working it through the roots of your hair and brushing it out toward the ends. Leave it in for 15 to 20 minutes minimum, and then shampoo it out of your hair. You can wet your hair beforehand in order to make the oil soak in better. Do note that, for some, castor oil can be difficult to work with because of its tendency to stick. &#8220;Because castor oil is highly occlusive and a big &#8216;coater,&#8217; if you put it directly on your hair, you will be stuck with it for days and days,&#8221; explains Philip B.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_26-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> How to Use Castor Oil on Eyebrows and Lashes <\/span><\/h2>\n<p id=\"mntl-sc-block_27-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Many swear by using castor oil on brows and lashes to reap the same benefits as those outlined here.\n<\/p>\n<ol id=\"mntl-sc-block_29-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li>To apply castor oil to your eyelashes, make sure they&#8217;re completely clean and free of makeup.<\/li>\n<li>Dip a cotton swab into a small amount of oil, close your eyes, and gently swipe the oil across your lashes, being mindful that it doesn&#8217;t get in your eyes.<\/li>\n<li>Try the same technique for brows, applying the oil with a cotton swab and using a tissue to ensure it doesn&#8217;t go beyond the brow line, into your eyes. As Philip B notes, it can be sticky, just as it can be on the head.<\/li>\n<\/ol>\n<div id=\"mntl-sc-block_31-0\" class=\"comp mntl-sc-block beauty-sc-block-faq--expanded beauty-sc-block-faq mntl-sc-block-faq mntl-block is-expanded\">\n<div id=\"mntl-sc-block-faq__title_1-0\" class=\"comp mntl-sc-block-faq__title mntl-text-block\">FAQ<\/div>\n<ul id=\"mntl-sc-block-faq__content_1-0\" class=\"comp mntl-sc-block-faq__content mntl-accordion \" data-tracking-container=\"true\">\n<li class=\"accordion__item js-accordion-item is-active\" data-ordinal=\"1\">\n<div class=\"accordion__header js-accordion-trigger\" id=\"mntl-accordion__item_1-0-section-0\"><span class=\"accordion__title\">Can I leave castor oil in my hair overnight?<\/span><\/div>\n<div class=\"accordion__body\">\n<div id=\"mntl-accordion__content_1-0\" class=\"comp mntl-accordion__content\">\n<div class=\"faq-accordion__item-answer\">\n<p>According to herbalist Katie Pande, overnight castor oil treatments can be great for addressing split ends. \u201cFor the ultimate restorative hair mask, blend with coconut oil and leave it on overnight to work its magic on your mane,&#8221; she says.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<li class=\"accordion__item js-accordion-item is-active\" data-ordinal=\"2\">\n<div class=\"accordion__header js-accordion-trigger\" id=\"mntl-accordion__item_2-0-section-1\"><span class=\"accordion__title\">Does castor oil stop gray hair?<\/span><\/div>\n<div class=\"accordion__body\">\n<div id=\"mntl-accordion__content_2-0\" class=\"comp mntl-accordion__content\">\n<div class=\"faq-accordion__item-answer\">\n<p>There are no studies to support the use of castor oil for preventing or reversing gray hair. Indeed, there is no way to reverse gray hair: \u201cOnce the melanocyte stem cells in the bulge region of the follicle are depleted it is irreversible,\u201d Zenovia Gabriel, MD, told us. Howard Sobel, MD, says that while there is no way to prevent going gray, managing your stress, avoiding smoking, and making sure you&#8217;re getting vitamins D and B12 can help keep hair from graying prematurely.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p>[analyse_source url=&#8221;https:\/\/www.byrdie.com\/castor-oil-for-hair-11899228&#8243;]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[analyse_image type=&#8221;featured&#8221; src=&#8221;https:\/\/www.byrdie.com\/thmb\/5_S9Zq3QFvo2O75qQIUJsHt7QJs=\/1500&#215;0\/filters:no_upscale():max_bytes(150000):strip_icc()\/castoroil1-9baa7d984f094e2bbf83a6e473118274.png&#8221;] Can Castor Oil Give You Long, Thick, and Healthy Hair? Experts Weigh In By Erin Jahns Erin Jahns Erin Jahns is a hair, makeup, and nails expert and beauty editor with over five years of experience in the industry. She is currently the senior beauty editor at WhoWhatWear. Byrdie&#8217;s Editorial Guidelines Published [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[83,226],"class_list":["post-1771243","post","type-post","status-publish","format-standard","hentry","category-politics","tag-byrdie-com","tag-crawlmanager"],"_links":{"self":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/1771243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1771243"}],"version-history":[{"count":0,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/1771243\/revisions"}],"wp:attachment":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1771243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1771243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1771243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}