1 citations
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February 2022 in “Journal of the American Academy of Dermatology” Taking biotin supplements can be risky and often lacks evidence of effectiveness for skin, hair, and nail issues.
August 2022 in “Journal of the American Academy of Dermatology” The authors agree they didn't discuss the risks of too much micronutrients and value the focus on biotin deficiency signs and treatment effectiveness.
24 citations
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May 2017 in “PubMed” Biotin supplements for hair improvement are popular without scientific proof of effectiveness.
April 2019 in “Journal of the Endocrine Society” An over-the-counter vitamin/mineral supplement improved hair loss and blood sugar control in a woman with non-classic 11-hydroxylase deficiency.
December 2025 in “International Journal of Innovative Technologies in Social Science” Oral supplements like Vitamin E and Omega-3 can help reduce isotretinoin side effects.
July 2025 in “Cosmoderma” The plant-based supplement improved hair, skin, and nail health and boosted well-being without side effects.
July 2025 in “Nutrición clínica y dietética hospitalaria/Nutrición clínica, dietética hospitalaria” Serenoa repens is the most effective supplement for treating androgenetic alopecia alone, while topical ketoconazole can be a helpful addition.
26 citations
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May 1984 in “Journal of Parenteral and Enteral Nutrition” Biotin supplements restored hair and resolved symptoms in a woman with biotin deficiency.
May 2023 in “Elsevier eBooks” Some nutritional supplements may help thicken hair in people with hair loss, but taking too much can cause side effects.
The conclusion is that hair supplement ingredients may be unsafe and should be disclosed and proven safe before use.
June 2023 in “JAAD international” Patients with skin of color are more likely to use supplements for hair loss than Caucasian patients, but the effectiveness of these supplements is uncertain and they can be expensive.
2 citations
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June 2023 in “Journal of the American Academy of Dermatology” Hair, skin, and nails supplement use nearly doubled from 2011 to 2020, with higher usage among young adults, females, and certain ethnic groups.
3 citations
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February 2020 in “International journal of women’s dermatology” Most women with hair loss take more supplements than average, but these often don't help and can be risky and costly.
7 citations
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October 2020 in “Dermatology practical & conceptual” Some skin, hair, and nail supplements can be toxic, interact with medications, affect lab tests, and may increase cancer risk.
1 citations
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November 2011 in “Dermatologica Sinica” Women using hair relaxers with alopecia had lower zinc levels, suggesting zinc deficiency might contribute to hair loss.
Biotin does not significantly help with hair growth.
79 citations
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January 2017 in “Dermatology practical & conceptual” Correcting nutrient deficiencies may help with hair loss, but the benefits of supplements without a deficiency are uncertain and could be harmful.
3 citations
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April 2022 in “Clinical, Cosmetic and Investigational Dermatology” Different methods, including stress management, healthy diet, supplements, and treatments like minoxidil, can help hair grow back after COVID-19 related hair loss.
70 citations
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June 2010 in “Clinics in Dermatology” Certain groups may need vitamin supplements to improve hair health and prevent other health problems.
1 citations
,
June 2017 in “Journal of The American Academy of Dermatology” PRP treatment for hair loss shows promise, with 58% of patients satisfied and most noticing improvement within 6 months.
239 citations
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July 2002 in “Clinical and Experimental Dermatology” Low iron and L-lysine levels can cause hair loss in women, and increasing these nutrients can reduce hair shedding.
57 citations
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February 2018 in “Journal of the American Academy of Dermatology” Biotin supplements are not proven to improve hair or nails and may interfere with medical tests.
12 citations
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September 2011 in “BMJ Case Reports” Quick diagnosis and biotin treatment can dramatically improve biotinidase deficiency symptoms.
11 citations
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May 2009 in “Actas Dermo-Sifiliográficas” Some treatments can help hair regrowth in alopecia areata, but none offer a cure, and effectiveness varies.
7 citations
,
May 2022 in “The Journal of Dermatology” Hair loss is a frequent long-term effect of COVID-19, and oral minoxidil is the most common effective treatment.
5 citations
,
March 2021 in “International Journal of Dermatology” Biotin supplementation during isotretinoin treatment for acne may help maintain skin hydration and improve hair growth.
5 citations
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October 2019 in “Giornale italiano di dermatologia e venereologia” Biotin supplements can improve certain skin disorders and hair loss when a deficiency is present.
July 2024 in “International Journal of Dermatology Venereology and Leprosy Sciences” Bariatric surgery often causes temporary hair loss due to stress and nutrient deficiencies.
February 2023 in “JEADV Clinical Practice” Biotin supplements significantly improved a young girl's uncombable hair.
August 2021 in “Benha Journal of Applied Sciences” Biotin supplements significantly improve hair loss in people with telegon effluvium who lack biotin.