Vitamin supplements may not improve hair thickness or density in patients with non-scarring hair loss.
June 2024 in “British Journal of Dermatology” Vitamin B supplements may reverse grey hair.
7 citations
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January 2001 in “PubMed” Vitamin B6 reduced hair loss in women with diffuse alopecia, but calcium pantothenate had no clear positive effect.
January 2025 in “Journal of Pharmacognosy and Phytochemistry” Marine-derived supplements may improve skin and hair health.
9 citations
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October 1946 in “Experimental biology and medicine” Rats fed soybean oil meal lost hair, but adding inositol, biotin, cystine, or methionine to their diet prevented this and improved growth.
September 2017 in “Journal of Investigative Dermatology” Certain products and treatments can improve hair health and growth.
9 citations
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July 2014 in “PubMed” The review doesn't clearly say if biotin, caffeine, melatonin, a marine extract, and zinc are effective for treating hair loss.
September 2006 in “Baghdad Science Journal” Pregnant and breastfeeding women may experience hair loss if they don't get enough essential vitamins and minerals.
January 2025 in “Open Veterinary Journal” Supplements improved the dog's hair growth without side effects.
7 citations
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May 2021 in “Dermatologic Clinics” Nutraceuticals like Ashwagandha and Astaxanthin may help with hair loss, but supplement regulation is challenging.
16 citations
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February 2008 in “PubMed” Vitamin B12 deficiency can cause skin darkening and white hair, but it's reversible.
January 1982 in “Side effects of drugs annual” High doses of certain vitamins can cause serious side effects and health risks.
February 2024 in “Cosmoderma” Micronutrient supplements for hair loss may not help and could be harmful without proven deficiencies.
2 citations
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July 2018 in “Elsevier eBooks” Some supplements may help with hair loss, but there's not enough strong evidence to recommend them without doctor advice.
March 2002 in “Clin-Alert” In 2002, various drugs caused serious side effects, including vitamin B12 deficiency, heart issues, blindness, hypersexuality, allergic reactions, blood clotting problems, pupil dilation, capillary leak syndrome, muscle breakdown, hepatitis, skin reactions, and lupus.
June 2025 in “OPAL (Open@LaTrobe) (La Trobe University)” The RHC complex with nicotinamide promotes hair growth and health.
November 2025 in “Quality in Sport” Collagen supplements improve skin, hair, and nails, especially with vitamin C and minerals.
2 citations
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January 2020 Certain dietary supplements can improve hair health.
9 citations
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March 2016 in “Natural Product Research” Some flavonoids may help with hair growth by affecting blood vessel function in hair follicles.
August 2021 in “Journal of the American Academy of Dermatology” The shampoo's ingredients' effect on a hair growth pathway in cells was tested, but the results are not given.
February 2023 in “American Journal of Biomedical and Life Sciences” Hair analysis can effectively assess nutritional status.
September 2010 in “대한화장품학회지(J. Soc. Cosmet. Scientists Korea)” The study developed a reliable method to measure active ingredients in hair nourisher products using HPLC.
The new method accurately measures active ingredients in hair nourishment products.
16 citations
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May 2009 in “Journal of child neurology” Valproic acid does not change biotinidase enzyme activity in children's blood.
25 citations
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August 2016 in “Journal of Cosmetic Dermatology” The marine complex supplement significantly improved hair growth in men with thinning hair without adverse effects.
October 2022 in “Research, Society and Development” Vitamins and minerals don't significantly affect hair loss treatment in patients with telogen effluvium.
November 2025 in “Journal of Saidu Medical College Swat” Biotinidase deficiency can mimic other conditions, making early diagnosis and treatment crucial to prevent lasting issues.
1 citations
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January 2022 in “Journal of Cosmetic Dermatology” Taking oral vitamin D and applying topical minoxidil together can better treat female pattern hair loss than using either treatment alone.
September 2020 in “Benha Journal of Applied Sciences” Patients with Alopecia Areata have lower levels of zinc and biotin than healthy individuals.
40 citations
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August 2018 in “Skin appendage disorders” Some alternative treatments for hair loss might work, but more research is needed.