10 citations
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October 2021 in “Animal nutrition” Vitamin B6 helps increase hair growth and density in rabbits by affecting certain cell signaling pathways.
121 citations
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January 1991 in “Acta dermato-venereologica” Terbinafine quickly builds up in skin and hair, staying effective for over 3 weeks.
May 2023 in “Zenodo (CERN European Organization for Nuclear Research)” Biotin may help with hair loss.
October 2024 in “INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH” Trichoscopy can help diagnose Vitamin B12, Vitamin D3, and ferritin deficiencies without blood tests.
April 2022 in “UNESP Institutional Repository (São Paulo State University)” Using both topical minoxidil and oral biotin together significantly boosts hair growth and density.
6 citations
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October 1980 in “Archives of Dermatology” Vitamin deficiencies, especially biotin and vitamin D, can cause hair loss.
5 citations
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February 2016 in “Genetic Testing and Molecular Biomarkers” Hair loss is significantly linked to lower levels of certain genes in hair follicles.
September 2017 in “BAUST Journal” 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.
July 2022 in “Journal of Dermatology and Dermatologic Surgery” People with chronic hair loss often have lower Vitamin B12 levels.
March 2025 in “Institutional Repositories DataBase (IRDB)” The testes significantly contribute to vitamin D metabolism and may affect male reproductive health and conditions like hair loss.
9 citations
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December 2014 in “Neuropsychiatric Disease and Treatment” People with first-time vitiligo have lower levels of a certain brain protein compared to healthy individuals.
October 2025 in “International Journal For Multidisciplinary Research” Ayurvedic treatment improved Vitamin B12 levels and symptoms.
3 citations
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April 2015 in “Current problems in dermatology” A more sensitive assay was developed to detect enzyme activity converting arginine to citrulline in hair follicles.
13 citations
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August 1999 in “Journal of Investigative Dermatology” Bikunin is found on the cell boundaries of certain skin layers and may help regulate skin and hair functions.
April 2024 in “International Journal of Advanced Research” Vitamin B12 deficiency is linked to hair loss and skin pigmentation changes.
10 citations
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June 2001 in “Annals of neurology” Alzheimer's patients have higher levels of certain chemicals in their hair.
The conclusion is that hair supplement ingredients may be unsafe and should be disclosed and proven safe before use.
55 citations
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January 2000 in “Cell biochemistry and function” Alopecia patients have lower antioxidants and higher lipid damage in their blood.
January 2022 in “Menoufia Medical Journal /Menoufia Medical Journal” Higher levels of retinol-binding protein 4 are found in people with alopecia areata, but these levels don't relate to how severe the condition is.
11 citations
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September 2010 in “PubMed” Zinc and biotin supplements are needed after certain surgeries to prevent hair loss and other issues.
April 2024 in “Anais brasileiros de dermatologia/Anais Brasileiros de Dermatologia” Using both minoxidil and biotin together increased hair growth more than using either one alone.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Biotrinine® may be an effective treatment for chronic hair loss.
7 citations
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August 2021 in “Open Access Macedonian Journal of Medical Sciences” The VDR gene polymorphism does not affect BDNF levels in autoimmune thyroiditis and hypothyroidism patients.
21 citations
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January 2009 in “Indian journal of dermatology, venereology, and leprology” Vitamin B12, folate, ferritin, and iron levels are not linked to alopecia areata.
4 citations
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January 1976 in “Archives of Dermatological Research” Metabolic disorders can cause hair structure defects and growth issues, but amino acid levels in hair remain normal.
February 2023 in “American Journal of Biomedical and Life Sciences” Hair analysis can effectively assess nutritional status.
June 2015 in “Majallah-i 'ilmī-i dānishgāh-i 'ulūm-i pizishkī va khadamāt-i bihdāshtī darmānī-i Hamadān” Low vitamin D levels are linked to hair loss in women.
November 2022 in “Journal of the Endocrine Society” Estrogen deficiency can reduce the enzyme activity needed to activate vitamin D.
1 citations
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April 2021 in “International Journal of Research in Dermatology” Low iron and vitamin B12 levels are common in women with chronic hair loss, while low vitamin D is less common.