{"id":1697523,"date":"2025-12-29T12:15:00","date_gmt":"2025-12-29T09:15:00","guid":{"rendered":"https:\/\/analyse.optim.biz\/?p=1697523"},"modified":"2025-12-29T12:15:00","modified_gmt":"2025-12-29T09:15:00","slug":"spirulina-is-a-super-ingredient-for-long-strong-hair-growth-read-all-the-benefits-here","status":"publish","type":"post","link":"https:\/\/analyse.optim.biz\/?p=1697523","title":{"rendered":"Spirulina Is a Super Ingredient for Long, Strong Hair Growth\u2014Read All the Benefits Here"},"content":{"rendered":"<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\">Spirulina Is a Super Ingredient for Long, Strong Hair Growth\u2014Read All the Benefits Here<\/h1>\n<p id=\"article-subheading_1-0\" class=\"comp article-subheading mntl-text-block\">Shine on.<\/p>\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=\"&lt;p&gt;Amanda Mitchell is a beauty, culture, and entertainment writer based in Brooklyn, New York.&lt;\/p&gt;\" data-inline-tooltip=\"true\"> Amanda Mitchell<\/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=\"Amanda Mitchell, former contributing writer for Byrdie, poses in a red sweater on a red background.\" class=\"lazyload mntl-author-tooltip__image mntl-image universal-image__image\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/amandamitchell-80897ca559b64258acfe6a5ea0fac850-1.webp\" title=\"amandamitchell-80897ca559b64258acfe6a5ea0fac850-1\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/amandamitchell-80897ca559b64258acfe6a5ea0fac850-1.webp\" width=\"200\" height=\"200\" class=\"img--noscript mntl-author-tooltip__image mntl-image universal-image__image\" alt=\"Amanda Mitchell, former contributing writer for Byrdie, poses in a red sweater on a red background.\" title=\"amandamitchell-80897ca559b64258acfe6a5ea0fac850-1\"><\/div>\n<\/div>\n<div id=\"mntl-author-tooltip__name_1-0\" class=\"comp mntl-author-tooltip__name mntl-attribution__item \">\nAmanda Mitchell\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\">\n<li class=\"social-nav__item social-nav__item--x\"><\/ul>\n<\/div>\n<div class=\"mntl-author-tooltip__bio\">\n<p>Amanda Mitchell is a beauty, culture, and entertainment writer based in Brooklyn, New York.<\/p>\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 December 29, 2025 07:15AM<\/div>\n<\/div>\n<div id=\"mntl-bylines__group_2-0\" class=\"comp mntl-bylines__group mntl-block mntl-bylines__group--medical_reviewer\">\n<div id=\"mntl-bylines__item_2-0\" class=\"comp mntl-bylines__item mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Medically reviewed by<\/span><\/p>\n<div data-tooltip=\"Onyeka Obioha, MD is an LA-based board certified dermatologist and fellow of the American Academy of Dermatology, as well as a member of the Skin of Color Society.\" data-inline-tooltip=\"true\"> Onyeka Obioha, MD<\/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=\"Onyeka Obioha MD\" class=\"lazyload mntl-author-tooltip__image mntl-image universal-image__image\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/onyekaobiohamdreal-6bafab72bc4241c2ae5492f716e680e5-1.webp\" title=\"onyekaobiohamdreal-6bafab72bc4241c2ae5492f716e680e5-1\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/onyekaobiohamdreal-6bafab72bc4241c2ae5492f716e680e5-1.webp\" width=\"200\" height=\"200\" class=\"img--noscript mntl-author-tooltip__image mntl-image universal-image__image\" alt=\"Onyeka Obioha MD\" title=\"onyekaobiohamdreal-6bafab72bc4241c2ae5492f716e680e5-1\"><\/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\">Medically reviewed by<\/span><br \/>\nOnyeka Obioha, MD\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\">\nOnyeka Obioha, MD is an LA-based board certified dermatologist and fellow of the American Academy of Dermatology, as well as a member of the Skin of Color Society.\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\">BOARD-CERTIFIED DERMATOLOGIST<\/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=\"true\" 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 Spirulina?<\/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\">Does Spirulina Help With Hair Growth?<\/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\">Benefits<\/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\">Hair Type Considerations<\/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<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_6-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_6-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">Potential Side Effects<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_7-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_7-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">The Final Takeaway<\/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:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/long-hair-2-6dd41c400fa04f99b828df270d2d0720-4.webp\" width=\"1280\" height=\"960\" alt=\"Person with long straight hair viewed from behind head turned slightly to the side\" class=\" primary-image__image mntl-primary-image--blurry\" title=\"long-hair-2-6dd41c400fa04f99b828df270d2d0720-4\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/long-hair-2-6dd41c400fa04f99b828df270d2d0720-4.webp\" width=\"1280\" height=\"960\" class=\"loaded primary-img--noscript primary-image__image mntl-primary-image--blurry\" alt=\"Person with long straight hair viewed from behind head turned slightly to the side\" title=\"long-hair-2-6dd41c400fa04f99b828df270d2d0720-4\"><\/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>Death to Stock<\/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>\n<p>Spirulina is a nutrient-rich microalgae known for promoting hair growth and improving overall scalp health.<\/p>\n<\/li>\n<li>\n<p>Spirulina is generally considered safe, but those with seafood allergies should exercise caution.<\/p>\n<\/li>\n<li>\n<p>Experts recommend using spirulina in shampoos, conditioners, or hair masks to achieve the best results.<\/p>\n<\/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\"> Thanks to the ever-expanding beauty industry, it&#8217;s not uncommon to hear about new trends, new ingredients, and products that are just begging to be dubbed &#8220;The Next Big Thing.&#8221; While we&#8217;re all searching for the next beauty routine game-changer, it is also good to be a skeptic, breaking down the how and why of it all. One of the most recent buzzy ingredients to hit shelves is spirulina.\n<\/p>\n<p id=\"mntl-sc-block_4-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> First introduced in nutritional supplements (and in smoothie and juice bars), spirulina is a blue-green algae that boasts an impressive amount of nutrients, including protein, vitamins, minerals, carotenoids, and antioxidants. Now, we&#8217;re seeing the ingredient pop up in the haircare aisle. And if you can&#8217;t help but wonder what exactly spirulina does for hair, then this article is for you. We&#8217;ve tapped expert dermatologist Dendy Engleman, MD, as well as board-certified trichologist Kari Williams, for their thoughts on spirulina.\n<\/p>\n<div id=\"mntl-sc-block_6-0\" 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>Dendy Engelman,\u00a0MD, FACMS, FAAD, is a board-certified cosmetic dermatologist and Mohs surgeon at the Shafer Clinic in New York City.<\/li>\n<li>Kari Williams is a board-certified trichologist, licensed cosmetologist, and a member of DevaCurl\u2019s Expert Curl Council.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_7-0\" 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 Spirulina? <\/span><\/h2>\n<p id=\"mntl-sc-block_8-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina is a microalgae superfood that is packed with nutrients like protein, iron, amino acids, fatty acids, and various vitamins. It contains a wide range of nutrients, including zinc, B vitamins, vitamin E, various antioxidants, minerals, fatty acids, amino acids, and chlorophyll. It is also full of antioxidants and high in protein. Spirulina can be found in hair growth supplements and powder forms, as well as in skin and hair care products.\n<\/p>\n<div id=\"mntl-sc-block_10-0\" 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\">Spirulina for Hair<\/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> antioxidant<\/p>\n<p><strong>Main benefits:<\/strong>\u00a0Promotes hair growth, fights dandruff, and purifies and cleanses the scalp<\/p>\n<p><strong>Who should use it:<\/strong>\u00a0In general, spirulina works for anyone with thin or damaged hair.<\/p>\n<p><strong>Works well with:<\/strong>\u00a0Spirulina has a synergistic effect with vitamin C.<\/p>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_11-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Does Spirulina Help With Hair Growth? <\/span><\/h2>\n<p id=\"mntl-sc-block_12-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"><strong>Spirulina&#8217;s chief benefit for hair is hair growth. It contains 70% protein, fatty acids, and iron, all nutrients that the body needs to promote hair growth. <\/strong>In fact, recent studies show that spirulina can help those affected by conditions with excessive hair loss as a symptom (such as alopecia) stimulate hair regrowth.<\/p>\n<h2 id=\"mntl-sc-block_14-0\" 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 Spirulina for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_15-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Since it&#8217;s such a potent source of nutrients, spirulina provides numerous benefits for not only the body but also hair. While the main benefit that spirulina has for hair is promoting growth, there are numerous others, including:<\/p>\n<ul id=\"mntl-sc-block_17-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Treats hair loss\/facilitates hair renewal:<\/strong> Oxidative stress, or an imbalance between free radicals and antioxidants in the body, can lead to aging. Spirulina is full of antioxidants, which help counteract oxidative stress and keep blood sugar levels regular, which can help those experiencing hair loss.<\/li>\n<li><strong>Fights dandruff: <\/strong>Due to its antimicrobial properties and zinc content, spirulina is great at fighting dandruff.<\/li>\n<li><strong>Moisturizes and hydrates the scalp: <\/strong>The hygroscopic molecules in microalgae take water particles from the environment and deliver them to the scalp and skin.<\/li>\n<li><strong>Soothes the scalp<\/strong>: Spirulina&#8217;s sugars, proteins, and amino acids are excellent for soothing and rebalancing the scalp and helping its barrier function work properly.<\/li>\n<li><strong>Controls sebum production:<\/strong> The proteins, polysaccharides, and fibers in spirulina are also natural polymers that can create a protective film on the scalp, leading to hydration, which can also help control sebum production.<\/li>\n<li><strong>Slows down the appearance of gray\/white hairs: <\/strong>Because of spirulina&#8217;s high content of iron, amino acids, as well as its pigments, it can help disguise those pesky grays.<\/li>\n<li><strong>Supports glossy, shiny hair:<\/strong> The antioxidant compounds of spirulina can help make your hair more glossy, stronger, and shinier.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_19-0\" 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_20-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> &#8220;Spirulina is generally recognized as a safe ingredient\u2014barring rare allergies or individual adverse reactions\u2014so I would not caution any specific hair or skin type against taking spirulina,&#8221; says Engelman. &#8220;This ingredient is great for anyone who wants to promote healthy hair growth and get a dose of antioxidants and vitamins.&#8221; \u00a0Spirulina is not recommended for someone with existing allergies, especially to seafood, seaweed, or other sea vegetables. Those with low-porosity hair might want to avoid spirulina\u2014the protein might be a little too much for your hair.\n<\/p>\n<h2 id=\"mntl-sc-block_22-0\" 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 Spirulina for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_23-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina supplements or powder can benefit hair, and it&#8217;s becoming incredibly popular in hair products. Engelman loves Prose because it offers haircare products customized for individual hair and scalp needs. &#8220;The Pre-Shampoo Scalp Mask and Custom Shampoo can be formulated with spirulina and are packed with other nourishing ingredients to strengthen, rebalance, and hydrate the hair and scalp,&#8221; she explains.<\/p>\n<p id=\"mntl-sc-block_25-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Williams also suggests adding spirulina to your shampoo and conditioner or into your favorite hair mask. &#8220;Allow the conditioner or mask to sit on the hair as you would during a normal haircare routine, and rinse completely,&#8221; Williams says. She also adds that it can be good for scalp massage: &#8220;Spirulina can also be blended into a hair oil and massaged into the hair and scalp.&#8221;\n<\/p>\n<h2 id=\"mntl-sc-block_27-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Potential Side Effects <\/span><\/h2>\n<p id=\"mntl-sc-block_28-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Although spirulina is generally considered safe, like with any supplement, it is possible to experience side effects. According to researchers, if spirulina grows in bodies of water polluted with heavy metals, bacteria, or microcystins (a type of bacteria produced by blue algae to protect it against predators), it can become contaminated with toxins. Effects like cramping, bloating, gassiness, diarrhea, dizziness, and vomiting can occur. The best way to avoid the potential risks is by consulting a trusted doctor before taking any new supplements.<\/p>\n<h2 id=\"mntl-sc-block_30-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> The Final Takeaway <\/span><\/h2>\n<p id=\"mntl-sc-block_31-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina is a type of microalgae that is filled with nutrients like protein, iron, amino acids, fatty acids, and various vitamins. It can be found in food and supplements, as well as skin and haircare products. Spirulina can promote hair growth, as well as hair and scalp health. Spirulina is generally safe, but those with existing allergies to seafood, seaweed, or other sea vegetables and those with low-porosity hair should avoid the ingredient. Before taking any new supplements, speak with a trusted physician who can advise based on your medical history.\n<\/p>\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>Deng R, Chow T-J. Hypolipidemic, antioxidant and antiinflammatory activities of microalgae spirulina.\u00a0<em>Cardiovasc Ther<\/em>. 2010;28(4):e33-e45.<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-4\">\n<p>Kesika P, Sivamaruthi BS, Thangaleela S, Bharathi M, Chaiyasut C. Role and mechanisms of phytochemicals in hair growth and health. Pharmaceuticals. 2023;16(2):206.<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-5\">\n<p>Tr\u00fceb RM.\u00a0Oxidative stress in ageing of hair.\u00a0<em>Int J Trichology<\/em>. 2009;1(1):6-14.<\/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<li id=\"mntl-breadcrumbs__item_3-0\" class=\"comp mntl-breadcrumbs__item mntl-block\"><span class=\"link__wrapper\">Loss &amp; Growth <\/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=\"Person combing back their wet hair\" class=\"lazyload card__img universal-image__image\" 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width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"Woman with wet curly hair in shower\" title=\"stocksy_txp288a10bd12h300_medium_4014297-c936c84f84e843fab03a38cc2ae78a4a-1\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">What Is a &#8220;Normal&#8221; Amount of Hair Loss to Experience From Showering? <\/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 Black model with braids in a ponytail, from the side profile\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/tractionalopecia-530c5fd5e1b4410494eb9852cb07b158-1.webp\" title=\"tractionalopecia-530c5fd5e1b4410494eb9852cb07b158-1\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/tractionalopecia-530c5fd5e1b4410494eb9852cb07b158-1.webp\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"A Black model with braids in a ponytail, from the side profile\" title=\"tractionalopecia-530c5fd5e1b4410494eb9852cb07b158-1\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">Traction Alopecia Is Irreversible\u2014Here&#8217;s What You Can Do to Prevent it<\/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=\"Closeup of a person applying cream to their thigh from a jar\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/retinol-body-2-938e7f9c61804f33b0b1fef11caa524b.webp\" title=\"retinol-body-2-938e7f9c61804f33b0b1fef11caa524b\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/retinol-body-2-938e7f9c61804f33b0b1fef11caa524b.webp\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"Closeup of a person applying cream to their thigh from a jar\" title=\"retinol-body-2-938e7f9c61804f33b0b1fef11caa524b\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">Why Retinol Belongs in Your Body Care Routine<\/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=\"Woman combing through strands of wet hair\" class=\"lazyload card__img universal-image__image\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/stocksy_txp3a5d80a9ucq300_medium_4548102-ae4fd111874745aaa09d77ddb59bad37-1.webp\" title=\"stocksy_txp3a5d80a9ucq300_medium_4548102-ae4fd111874745aaa09d77ddb59bad37-1\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/stocksy_txp3a5d80a9ucq300_medium_4548102-ae4fd111874745aaa09d77ddb59bad37-1.webp\" width=\"300\" height=\"240\" class=\"img--noscript card__img universal-image__image\" alt=\"Woman combing through strands of wet hair\" title=\"stocksy_txp3a5d80a9ucq300_medium_4548102-ae4fd111874745aaa09d77ddb59bad37-1\"><\/div>\n<\/div>\n<\/div>\n<div class=\"card__content \"><span class=\"card__title\"><span class=\"card__title-text \">This Is Why Your Hair Tangles Easily\u2014and What You Can Do About It<\/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\">Spirulina Is a Super Ingredient for Long, Strong Hair Growth\u2014Read All the Benefits Here<\/h1>\n<p id=\"article-subheading_1-0\" class=\"comp article-subheading mntl-text-block\">Shine on.<\/p>\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=\"&lt;p&gt;Amanda Mitchell is a beauty, culture, and entertainment writer based in Brooklyn, New York.&lt;\/p&gt;\" data-inline-tooltip=\"true\"> Amanda Mitchell<\/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=\"Amanda Mitchell, former contributing writer for Byrdie, poses in a red sweater on a red background.\" class=\"lazyload mntl-author-tooltip__image mntl-image universal-image__image\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/amandamitchell-80897ca559b64258acfe6a5ea0fac850-1.webp\" title=\"amandamitchell-80897ca559b64258acfe6a5ea0fac850-1\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/amandamitchell-80897ca559b64258acfe6a5ea0fac850-1.webp\" width=\"200\" height=\"200\" class=\"img--noscript mntl-author-tooltip__image mntl-image universal-image__image\" alt=\"Amanda Mitchell, former contributing writer for Byrdie, poses in a red sweater on a red background.\" title=\"amandamitchell-80897ca559b64258acfe6a5ea0fac850-1\"><\/div>\n<\/div>\n<div id=\"mntl-author-tooltip__name_1-0\" class=\"comp mntl-author-tooltip__name mntl-attribution__item \">\nAmanda Mitchell\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\">\n<li class=\"social-nav__item social-nav__item--x\"><\/ul>\n<\/div>\n<div class=\"mntl-author-tooltip__bio\">\n<p>Amanda Mitchell is a beauty, culture, and entertainment writer based in Brooklyn, New York.<\/p>\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 December 29, 2025 07:15AM<\/div>\n<\/div>\n<div id=\"mntl-bylines__group_2-0\" class=\"comp mntl-bylines__group mntl-block mntl-bylines__group--medical_reviewer\">\n<div id=\"mntl-bylines__item_2-0\" class=\"comp mntl-bylines__item mntl-attribution__item \"><span class=\"mntl-attribution__item-descriptor\">Medically reviewed by<\/span><\/p>\n<div data-tooltip=\"Onyeka Obioha, MD is an LA-based board certified dermatologist and fellow of the American Academy of Dermatology, as well as a member of the Skin of Color Society.\" data-inline-tooltip=\"true\"> Onyeka Obioha, MD<\/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=\"Onyeka Obioha MD\" class=\"lazyload mntl-author-tooltip__image mntl-image universal-image__image\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/onyekaobiohamdreal-6bafab72bc4241c2ae5492f716e680e5-1.webp\" title=\"onyekaobiohamdreal-6bafab72bc4241c2ae5492f716e680e5-1\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/onyekaobiohamdreal-6bafab72bc4241c2ae5492f716e680e5-1.webp\" width=\"200\" height=\"200\" class=\"img--noscript mntl-author-tooltip__image mntl-image universal-image__image\" alt=\"Onyeka Obioha MD\" title=\"onyekaobiohamdreal-6bafab72bc4241c2ae5492f716e680e5-1\"><\/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\">Medically reviewed by<\/span><br \/>\nOnyeka Obioha, MD\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\">\nOnyeka Obioha, MD is an LA-based board certified dermatologist and fellow of the American Academy of Dermatology, as well as a member of the Skin of Color Society.\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\">BOARD-CERTIFIED DERMATOLOGIST<\/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=\"true\" 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 Spirulina?<\/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\">Does Spirulina Help With Hair Growth?<\/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\">Benefits<\/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\">Hair Type Considerations<\/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<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_6-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_6-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">Potential Side Effects<\/span><\/div>\n<\/li>\n<li id=\"mntl-toc__list-item_7-0\" class=\"comp mntl-toc__list-item mntl-block\">\n<div id=\"mntl-toc__list-item-heading_7-0\" class=\"comp mntl-toc__list-item-heading mntl-block\"><span class=\"link__wrapper\">The Final Takeaway<\/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:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/long-hair-2-6dd41c400fa04f99b828df270d2d0720-4.webp\" width=\"1280\" height=\"960\" alt=\"Person with long straight hair viewed from behind head turned slightly to the side\" class=\" primary-image__image mntl-primary-image--blurry\" title=\"long-hair-2-6dd41c400fa04f99b828df270d2d0720-4\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/long-hair-2-6dd41c400fa04f99b828df270d2d0720-4.webp\" width=\"1280\" height=\"960\" class=\"loaded primary-img--noscript primary-image__image mntl-primary-image--blurry\" alt=\"Person with long straight hair viewed from behind head turned slightly to the side\" title=\"long-hair-2-6dd41c400fa04f99b828df270d2d0720-4\"><\/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>Death to Stock<\/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>\n<p>Spirulina is a nutrient-rich microalgae known for promoting hair growth and improving overall scalp health.<\/p>\n<\/li>\n<li>\n<p>Spirulina is generally considered safe, but those with seafood allergies should exercise caution.<\/p>\n<\/li>\n<li>\n<p>Experts recommend using spirulina in shampoos, conditioners, or hair masks to achieve the best results.<\/p>\n<\/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\"> Thanks to the ever-expanding beauty industry, it&#8217;s not uncommon to hear about new trends, new ingredients, and products that are just begging to be dubbed &#8220;The Next Big Thing.&#8221; While we&#8217;re all searching for the next beauty routine game-changer, it is also good to be a skeptic, breaking down the how and why of it all. One of the most recent buzzy ingredients to hit shelves is spirulina.\n<\/p>\n<p id=\"mntl-sc-block_4-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> First introduced in nutritional supplements (and in smoothie and juice bars), spirulina is a blue-green algae that boasts an impressive amount of nutrients, including protein, vitamins, minerals, carotenoids, and antioxidants. Now, we&#8217;re seeing the ingredient pop up in the haircare aisle. And if you can&#8217;t help but wonder what exactly spirulina does for hair, then this article is for you. We&#8217;ve tapped expert dermatologist Dendy Engleman, MD, as well as board-certified trichologist Kari Williams, for their thoughts on spirulina.\n<\/p>\n<div id=\"mntl-sc-block_6-0\" 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>Dendy Engelman,\u00a0MD, FACMS, FAAD, is a board-certified cosmetic dermatologist and Mohs surgeon at the Shafer Clinic in New York City.<\/li>\n<li>Kari Williams is a board-certified trichologist, licensed cosmetologist, and a member of DevaCurl\u2019s Expert Curl Council.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_7-0\" 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 Spirulina? <\/span><\/h2>\n<p id=\"mntl-sc-block_8-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina is a microalgae superfood that is packed with nutrients like protein, iron, amino acids, fatty acids, and various vitamins. It contains a wide range of nutrients, including zinc, B vitamins, vitamin E, various antioxidants, minerals, fatty acids, amino acids, and chlorophyll. It is also full of antioxidants and high in protein. Spirulina can be found in hair growth supplements and powder forms, as well as in skin and hair care products.\n<\/p>\n<div id=\"mntl-sc-block_10-0\" 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\">Spirulina for Hair<\/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> antioxidant<\/p>\n<p><strong>Main benefits:<\/strong>\u00a0Promotes hair growth, fights dandruff, and purifies and cleanses the scalp<\/p>\n<p><strong>Who should use it:<\/strong>\u00a0In general, spirulina works for anyone with thin or damaged hair.<\/p>\n<p><strong>Works well with:<\/strong>\u00a0Spirulina has a synergistic effect with vitamin C.<\/p>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_11-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Does Spirulina Help With Hair Growth? <\/span><\/h2>\n<p id=\"mntl-sc-block_12-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"><strong>Spirulina&#8217;s chief benefit for hair is hair growth. It contains 70% protein, fatty acids, and iron, all nutrients that the body needs to promote hair growth. <\/strong>In fact, recent studies show that spirulina can help those affected by conditions with excessive hair loss as a symptom (such as alopecia) stimulate hair regrowth.<\/p>\n<h2 id=\"mntl-sc-block_14-0\" 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 Spirulina for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_15-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Since it&#8217;s such a potent source of nutrients, spirulina provides numerous benefits for not only the body but also hair. While the main benefit that spirulina has for hair is promoting growth, there are numerous others, including:<\/p>\n<ul id=\"mntl-sc-block_17-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Treats hair loss\/facilitates hair renewal:<\/strong> Oxidative stress, or an imbalance between free radicals and antioxidants in the body, can lead to aging. Spirulina is full of antioxidants, which help counteract oxidative stress and keep blood sugar levels regular, which can help those experiencing hair loss.<\/li>\n<li><strong>Fights dandruff: <\/strong>Due to its antimicrobial properties and zinc content, spirulina is great at fighting dandruff.<\/li>\n<li><strong>Moisturizes and hydrates the scalp: <\/strong>The hygroscopic molecules in microalgae take water particles from the environment and deliver them to the scalp and skin.<\/li>\n<li><strong>Soothes the scalp<\/strong>: Spirulina&#8217;s sugars, proteins, and amino acids are excellent for soothing and rebalancing the scalp and helping its barrier function work properly.<\/li>\n<li><strong>Controls sebum production:<\/strong> The proteins, polysaccharides, and fibers in spirulina are also natural polymers that can create a protective film on the scalp, leading to hydration, which can also help control sebum production.<\/li>\n<li><strong>Slows down the appearance of gray\/white hairs: <\/strong>Because of spirulina&#8217;s high content of iron, amino acids, as well as its pigments, it can help disguise those pesky grays.<\/li>\n<li><strong>Supports glossy, shiny hair:<\/strong> The antioxidant compounds of spirulina can help make your hair more glossy, stronger, and shinier.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_19-0\" 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_20-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> &#8220;Spirulina is generally recognized as a safe ingredient\u2014barring rare allergies or individual adverse reactions\u2014so I would not caution any specific hair or skin type against taking spirulina,&#8221; says Engelman. &#8220;This ingredient is great for anyone who wants to promote healthy hair growth and get a dose of antioxidants and vitamins.&#8221; \u00a0Spirulina is not recommended for someone with existing allergies, especially to seafood, seaweed, or other sea vegetables. Those with low-porosity hair might want to avoid spirulina\u2014the protein might be a little too much for your hair.\n<\/p>\n<h2 id=\"mntl-sc-block_22-0\" 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 Spirulina for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_23-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina supplements or powder can benefit hair, and it&#8217;s becoming incredibly popular in hair products. Engelman loves Prose because it offers haircare products customized for individual hair and scalp needs. &#8220;The Pre-Shampoo Scalp Mask and Custom Shampoo can be formulated with spirulina and are packed with other nourishing ingredients to strengthen, rebalance, and hydrate the hair and scalp,&#8221; she explains.<\/p>\n<p id=\"mntl-sc-block_25-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Williams also suggests adding spirulina to your shampoo and conditioner or into your favorite hair mask. &#8220;Allow the conditioner or mask to sit on the hair as you would during a normal haircare routine, and rinse completely,&#8221; Williams says. She also adds that it can be good for scalp massage: &#8220;Spirulina can also be blended into a hair oil and massaged into the hair and scalp.&#8221;\n<\/p>\n<h2 id=\"mntl-sc-block_27-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Potential Side Effects <\/span><\/h2>\n<p id=\"mntl-sc-block_28-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Although spirulina is generally considered safe, like with any supplement, it is possible to experience side effects. According to researchers, if spirulina grows in bodies of water polluted with heavy metals, bacteria, or microcystins (a type of bacteria produced by blue algae to protect it against predators), it can become contaminated with toxins. Effects like cramping, bloating, gassiness, diarrhea, dizziness, and vomiting can occur. The best way to avoid the potential risks is by consulting a trusted doctor before taking any new supplements.<\/p>\n<h2 id=\"mntl-sc-block_30-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> The Final Takeaway <\/span><\/h2>\n<p id=\"mntl-sc-block_31-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina is a type of microalgae that is filled with nutrients like protein, iron, amino acids, fatty acids, and various vitamins. It can be found in food and supplements, as well as skin and haircare products. Spirulina can promote hair growth, as well as hair and scalp health. Spirulina is generally safe, but those with existing allergies to seafood, seaweed, or other sea vegetables and those with low-porosity hair should avoid the ingredient. Before taking any new supplements, speak with a trusted physician who can advise based on your medical history.\n<\/p>\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>Deng R, Chow T-J. Hypolipidemic, antioxidant and antiinflammatory activities of microalgae spirulina.\u00a0<em>Cardiovasc Ther<\/em>. 2010;28(4):e33-e45.<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-4\">\n<p>Kesika P, Sivamaruthi BS, Thangaleela S, Bharathi M, Chaiyasut C. Role and mechanisms of phytochemicals in hair growth and health. Pharmaceuticals. 2023;16(2):206.<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-5\">\n<p>Tr\u00fceb RM.\u00a0Oxidative stress in ageing of hair.\u00a0<em>Int J Trichology<\/em>. 2009;1(1):6-14.<\/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<li id=\"mntl-breadcrumbs__item_3-0\" class=\"comp mntl-breadcrumbs__item mntl-block\"><span class=\"link__wrapper\">Loss &amp; Growth <\/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:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/long-hair-2-6dd41c400fa04f99b828df270d2d0720-4.webp\" width=\"1280\" height=\"960\" alt=\"Person with long straight hair viewed from behind head turned slightly to the side\" class=\" primary-image__image mntl-primary-image--blurry\" title=\"long-hair-2-6dd41c400fa04f99b828df270d2d0720-4\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/analyse.optim.biz\/wp-content\/uploads\/2026\/02\/long-hair-2-6dd41c400fa04f99b828df270d2d0720-4.webp\" width=\"1280\" height=\"960\" class=\"loaded primary-img--noscript primary-image__image mntl-primary-image--blurry\" alt=\"Person with long straight hair viewed from behind head turned slightly to the side\" title=\"long-hair-2-6dd41c400fa04f99b828df270d2d0720-4\"><\/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>Death to Stock<\/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>\n<p>Spirulina is a nutrient-rich microalgae known for promoting hair growth and improving overall scalp health.<\/p>\n<\/li>\n<li>\n<p>Spirulina is generally considered safe, but those with seafood allergies should exercise caution.<\/p>\n<\/li>\n<li>\n<p>Experts recommend using spirulina in shampoos, conditioners, or hair masks to achieve the best results.<\/p>\n<\/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\"> Thanks to the ever-expanding beauty industry, it&#8217;s not uncommon to hear about new trends, new ingredients, and products that are just begging to be dubbed &#8220;The Next Big Thing.&#8221; While we&#8217;re all searching for the next beauty routine game-changer, it is also good to be a skeptic, breaking down the how and why of it all. One of the most recent buzzy ingredients to hit shelves is spirulina.\n<\/p>\n<p id=\"mntl-sc-block_4-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> First introduced in nutritional supplements (and in smoothie and juice bars), spirulina is a blue-green algae that boasts an impressive amount of nutrients, including protein, vitamins, minerals, carotenoids, and antioxidants. Now, we&#8217;re seeing the ingredient pop up in the haircare aisle. And if you can&#8217;t help but wonder what exactly spirulina does for hair, then this article is for you. We&#8217;ve tapped expert dermatologist Dendy Engleman, MD, as well as board-certified trichologist Kari Williams, for their thoughts on spirulina.\n<\/p>\n<div id=\"mntl-sc-block_6-0\" 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>Dendy Engelman,\u00a0MD, FACMS, FAAD, is a board-certified cosmetic dermatologist and Mohs surgeon at the Shafer Clinic in New York City.<\/li>\n<li>Kari Williams is a board-certified trichologist, licensed cosmetologist, and a member of DevaCurl\u2019s Expert Curl Council.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_7-0\" 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 Spirulina? <\/span><\/h2>\n<p id=\"mntl-sc-block_8-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina is a microalgae superfood that is packed with nutrients like protein, iron, amino acids, fatty acids, and various vitamins. It contains a wide range of nutrients, including zinc, B vitamins, vitamin E, various antioxidants, minerals, fatty acids, amino acids, and chlorophyll. It is also full of antioxidants and high in protein. Spirulina can be found in hair growth supplements and powder forms, as well as in skin and hair care products.\n<\/p>\n<div id=\"mntl-sc-block_10-0\" 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\">Spirulina for Hair<\/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> antioxidant<\/p>\n<p><strong>Main benefits:<\/strong>\u00a0Promotes hair growth, fights dandruff, and purifies and cleanses the scalp<\/p>\n<p><strong>Who should use it:<\/strong>\u00a0In general, spirulina works for anyone with thin or damaged hair.<\/p>\n<p><strong>Works well with:<\/strong>\u00a0Spirulina has a synergistic effect with vitamin C.<\/p>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_11-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Does Spirulina Help With Hair Growth? <\/span><\/h2>\n<p id=\"mntl-sc-block_12-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"><strong>Spirulina&#8217;s chief benefit for hair is hair growth. It contains 70% protein, fatty acids, and iron, all nutrients that the body needs to promote hair growth. <\/strong>In fact, recent studies show that spirulina can help those affected by conditions with excessive hair loss as a symptom (such as alopecia) stimulate hair regrowth.<\/p>\n<h2 id=\"mntl-sc-block_14-0\" 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 Spirulina for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_15-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Since it&#8217;s such a potent source of nutrients, spirulina provides numerous benefits for not only the body but also hair. While the main benefit that spirulina has for hair is promoting growth, there are numerous others, including:<\/p>\n<ul id=\"mntl-sc-block_17-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Treats hair loss\/facilitates hair renewal:<\/strong> Oxidative stress, or an imbalance between free radicals and antioxidants in the body, can lead to aging. Spirulina is full of antioxidants, which help counteract oxidative stress and keep blood sugar levels regular, which can help those experiencing hair loss.<\/li>\n<li><strong>Fights dandruff: <\/strong>Due to its antimicrobial properties and zinc content, spirulina is great at fighting dandruff.<\/li>\n<li><strong>Moisturizes and hydrates the scalp: <\/strong>The hygroscopic molecules in microalgae take water particles from the environment and deliver them to the scalp and skin.<\/li>\n<li><strong>Soothes the scalp<\/strong>: Spirulina&#8217;s sugars, proteins, and amino acids are excellent for soothing and rebalancing the scalp and helping its barrier function work properly.<\/li>\n<li><strong>Controls sebum production:<\/strong> The proteins, polysaccharides, and fibers in spirulina are also natural polymers that can create a protective film on the scalp, leading to hydration, which can also help control sebum production.<\/li>\n<li><strong>Slows down the appearance of gray\/white hairs: <\/strong>Because of spirulina&#8217;s high content of iron, amino acids, as well as its pigments, it can help disguise those pesky grays.<\/li>\n<li><strong>Supports glossy, shiny hair:<\/strong> The antioxidant compounds of spirulina can help make your hair more glossy, stronger, and shinier.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_19-0\" 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_20-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> &#8220;Spirulina is generally recognized as a safe ingredient\u2014barring rare allergies or individual adverse reactions\u2014so I would not caution any specific hair or skin type against taking spirulina,&#8221; says Engelman. &#8220;This ingredient is great for anyone who wants to promote healthy hair growth and get a dose of antioxidants and vitamins.&#8221; \u00a0Spirulina is not recommended for someone with existing allergies, especially to seafood, seaweed, or other sea vegetables. Those with low-porosity hair might want to avoid spirulina\u2014the protein might be a little too much for your hair.\n<\/p>\n<h2 id=\"mntl-sc-block_22-0\" 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 Spirulina for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_23-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina supplements or powder can benefit hair, and it&#8217;s becoming incredibly popular in hair products. Engelman loves Prose because it offers haircare products customized for individual hair and scalp needs. &#8220;The Pre-Shampoo Scalp Mask and Custom Shampoo can be formulated with spirulina and are packed with other nourishing ingredients to strengthen, rebalance, and hydrate the hair and scalp,&#8221; she explains.<\/p>\n<p id=\"mntl-sc-block_25-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Williams also suggests adding spirulina to your shampoo and conditioner or into your favorite hair mask. &#8220;Allow the conditioner or mask to sit on the hair as you would during a normal haircare routine, and rinse completely,&#8221; Williams says. She also adds that it can be good for scalp massage: &#8220;Spirulina can also be blended into a hair oil and massaged into the hair and scalp.&#8221;\n<\/p>\n<h2 id=\"mntl-sc-block_27-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Potential Side Effects <\/span><\/h2>\n<p id=\"mntl-sc-block_28-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Although spirulina is generally considered safe, like with any supplement, it is possible to experience side effects. According to researchers, if spirulina grows in bodies of water polluted with heavy metals, bacteria, or microcystins (a type of bacteria produced by blue algae to protect it against predators), it can become contaminated with toxins. Effects like cramping, bloating, gassiness, diarrhea, dizziness, and vomiting can occur. The best way to avoid the potential risks is by consulting a trusted doctor before taking any new supplements.<\/p>\n<h2 id=\"mntl-sc-block_30-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> The Final Takeaway <\/span><\/h2>\n<p id=\"mntl-sc-block_31-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina is a type of microalgae that is filled with nutrients like protein, iron, amino acids, fatty acids, and various vitamins. It can be found in food and supplements, as well as skin and haircare products. Spirulina can promote hair growth, as well as hair and scalp health. Spirulina is generally safe, but those with existing allergies to seafood, seaweed, or other sea vegetables and those with low-porosity hair should avoid the ingredient. Before taking any new supplements, speak with a trusted physician who can advise based on your medical history.\n<\/p>\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>Deng R, Chow T-J. Hypolipidemic, antioxidant and antiinflammatory activities of microalgae spirulina.\u00a0<em>Cardiovasc Ther<\/em>. 2010;28(4):e33-e45.<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-4\">\n<p>Kesika P, Sivamaruthi BS, Thangaleela S, Bharathi M, Chaiyasut C. Role and mechanisms of phytochemicals in hair growth and health. Pharmaceuticals. 2023;16(2):206.<\/p>\n<\/li>\n<li class=\"mntl-sources__source\" id=\"citation-5\">\n<p>Tr\u00fceb RM.\u00a0Oxidative stress in ageing of hair.\u00a0<em>Int J Trichology<\/em>. 2009;1(1):6-14.<\/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>\n<p>Spirulina is a nutrient-rich microalgae known for promoting hair growth and improving overall scalp health.<\/p>\n<\/li>\n<li>\n<p>Spirulina is generally considered safe, but those with seafood allergies should exercise caution.<\/p>\n<\/li>\n<li>\n<p>Experts recommend using spirulina in shampoos, conditioners, or hair masks to achieve the best results.<\/p>\n<\/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\"> Thanks to the ever-expanding beauty industry, it&#8217;s not uncommon to hear about new trends, new ingredients, and products that are just begging to be dubbed &#8220;The Next Big Thing.&#8221; While we&#8217;re all searching for the next beauty routine game-changer, it is also good to be a skeptic, breaking down the how and why of it all. One of the most recent buzzy ingredients to hit shelves is spirulina.\n<\/p>\n<p id=\"mntl-sc-block_4-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> First introduced in nutritional supplements (and in smoothie and juice bars), spirulina is a blue-green algae that boasts an impressive amount of nutrients, including protein, vitamins, minerals, carotenoids, and antioxidants. Now, we&#8217;re seeing the ingredient pop up in the haircare aisle. And if you can&#8217;t help but wonder what exactly spirulina does for hair, then this article is for you. We&#8217;ve tapped expert dermatologist Dendy Engleman, MD, as well as board-certified trichologist Kari Williams, for their thoughts on spirulina.\n<\/p>\n<div id=\"mntl-sc-block_6-0\" 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>Dendy Engelman,\u00a0MD, FACMS, FAAD, is a board-certified cosmetic dermatologist and Mohs surgeon at the Shafer Clinic in New York City.<\/li>\n<li>Kari Williams is a board-certified trichologist, licensed cosmetologist, and a member of DevaCurl\u2019s Expert Curl Council.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_7-0\" 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 Spirulina? <\/span><\/h2>\n<p id=\"mntl-sc-block_8-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina is a microalgae superfood that is packed with nutrients like protein, iron, amino acids, fatty acids, and various vitamins. It contains a wide range of nutrients, including zinc, B vitamins, vitamin E, various antioxidants, minerals, fatty acids, amino acids, and chlorophyll. It is also full of antioxidants and high in protein. Spirulina can be found in hair growth supplements and powder forms, as well as in skin and hair care products.\n<\/p>\n<div id=\"mntl-sc-block_10-0\" 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\">Spirulina for Hair<\/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> antioxidant<\/p>\n<p><strong>Main benefits:<\/strong>\u00a0Promotes hair growth, fights dandruff, and purifies and cleanses the scalp<\/p>\n<p><strong>Who should use it:<\/strong>\u00a0In general, spirulina works for anyone with thin or damaged hair.<\/p>\n<p><strong>Works well with:<\/strong>\u00a0Spirulina has a synergistic effect with vitamin C.<\/p>\n<\/div>\n<\/div>\n<h2 id=\"mntl-sc-block_11-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Does Spirulina Help With Hair Growth? <\/span><\/h2>\n<p id=\"mntl-sc-block_12-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"><strong>Spirulina&#8217;s chief benefit for hair is hair growth. It contains 70% protein, fatty acids, and iron, all nutrients that the body needs to promote hair growth. <\/strong>In fact, recent studies show that spirulina can help those affected by conditions with excessive hair loss as a symptom (such as alopecia) stimulate hair regrowth.<\/p>\n<h2 id=\"mntl-sc-block_14-0\" 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 Spirulina for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_15-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Since it&#8217;s such a potent source of nutrients, spirulina provides numerous benefits for not only the body but also hair. While the main benefit that spirulina has for hair is promoting growth, there are numerous others, including:<\/p>\n<ul id=\"mntl-sc-block_17-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\">\n<li><strong>Treats hair loss\/facilitates hair renewal:<\/strong> Oxidative stress, or an imbalance between free radicals and antioxidants in the body, can lead to aging. Spirulina is full of antioxidants, which help counteract oxidative stress and keep blood sugar levels regular, which can help those experiencing hair loss.<\/li>\n<li><strong>Fights dandruff: <\/strong>Due to its antimicrobial properties and zinc content, spirulina is great at fighting dandruff.<\/li>\n<li><strong>Moisturizes and hydrates the scalp: <\/strong>The hygroscopic molecules in microalgae take water particles from the environment and deliver them to the scalp and skin.<\/li>\n<li><strong>Soothes the scalp<\/strong>: Spirulina&#8217;s sugars, proteins, and amino acids are excellent for soothing and rebalancing the scalp and helping its barrier function work properly.<\/li>\n<li><strong>Controls sebum production:<\/strong> The proteins, polysaccharides, and fibers in spirulina are also natural polymers that can create a protective film on the scalp, leading to hydration, which can also help control sebum production.<\/li>\n<li><strong>Slows down the appearance of gray\/white hairs: <\/strong>Because of spirulina&#8217;s high content of iron, amino acids, as well as its pigments, it can help disguise those pesky grays.<\/li>\n<li><strong>Supports glossy, shiny hair:<\/strong> The antioxidant compounds of spirulina can help make your hair more glossy, stronger, and shinier.<\/li>\n<\/ul>\n<h2 id=\"mntl-sc-block_19-0\" 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_20-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> &#8220;Spirulina is generally recognized as a safe ingredient\u2014barring rare allergies or individual adverse reactions\u2014so I would not caution any specific hair or skin type against taking spirulina,&#8221; says Engelman. &#8220;This ingredient is great for anyone who wants to promote healthy hair growth and get a dose of antioxidants and vitamins.&#8221; \u00a0Spirulina is not recommended for someone with existing allergies, especially to seafood, seaweed, or other sea vegetables. Those with low-porosity hair might want to avoid spirulina\u2014the protein might be a little too much for your hair.\n<\/p>\n<h2 id=\"mntl-sc-block_22-0\" 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 Spirulina for Hair <\/span><\/h2>\n<p id=\"mntl-sc-block_23-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina supplements or powder can benefit hair, and it&#8217;s becoming incredibly popular in hair products. Engelman loves Prose because it offers haircare products customized for individual hair and scalp needs. &#8220;The Pre-Shampoo Scalp Mask and Custom Shampoo can be formulated with spirulina and are packed with other nourishing ingredients to strengthen, rebalance, and hydrate the hair and scalp,&#8221; she explains.<\/p>\n<p id=\"mntl-sc-block_25-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Williams also suggests adding spirulina to your shampoo and conditioner or into your favorite hair mask. &#8220;Allow the conditioner or mask to sit on the hair as you would during a normal haircare routine, and rinse completely,&#8221; Williams says. She also adds that it can be good for scalp massage: &#8220;Spirulina can also be blended into a hair oil and massaged into the hair and scalp.&#8221;\n<\/p>\n<h2 id=\"mntl-sc-block_27-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> Potential Side Effects <\/span><\/h2>\n<p id=\"mntl-sc-block_28-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Although spirulina is generally considered safe, like with any supplement, it is possible to experience side effects. According to researchers, if spirulina grows in bodies of water polluted with heavy metals, bacteria, or microcystins (a type of bacteria produced by blue algae to protect it against predators), it can become contaminated with toxins. Effects like cramping, bloating, gassiness, diarrhea, dizziness, and vomiting can occur. The best way to avoid the potential risks is by consulting a trusted doctor before taking any new supplements.<\/p>\n<h2 id=\"mntl-sc-block_30-0\" class=\"comp mntl-sc-block beauty-sc-block-heading mntl-sc-block-heading\"><span class=\"mntl-sc-block-heading__text text-title-300\"> The Final Takeaway <\/span><\/h2>\n<p id=\"mntl-sc-block_31-0\" class=\"comp mntl-sc-block beauty-sc-block-html mntl-sc-block-html\"> Spirulina is a type of microalgae that is filled with nutrients like protein, iron, amino acids, fatty acids, and various vitamins. It can be found in food and supplements, as well as skin and haircare products. Spirulina can promote hair growth, as well as hair and scalp health. Spirulina is generally safe, but those with existing allergies to seafood, seaweed, or other sea vegetables and those with low-porosity hair should avoid the ingredient. Before taking any new supplements, speak with a trusted physician who can advise based on your medical history.\n<\/p>\n<\/div>\n<p> Source URL: https:\/\/www.byrdie.com\/spirulina-for-hair-11876694<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Spirulina Is a Super Ingredient for Long, Strong Hair Growth\u2014Read All the Benefits Here Shine on. By Amanda Mitchell Amanda Mitchell Amanda Mitchell is a beauty, culture, and entertainment writer based in Brooklyn, New York. Byrdie&#8217;s Editorial Guidelines Published on December 29, 2025 07:15AM Medically reviewed by Onyeka Obioha, MD Medically reviewed by Onyeka Obioha, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1697524,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[83,226],"class_list":["post-1697523","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-politics","tag-byrdie-com","tag-crawlmanager"],"_links":{"self":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/1697523","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=1697523"}],"version-history":[{"count":0,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/1697523\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/media\/1697524"}],"wp:attachment":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1697523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1697523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1697523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}