January 2025 in “Egyptian Journal of Dermatology and Venerology” COVID-19 vaccination may lower vitamin D levels and cause hair loss.
46 citations
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May 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” The vitamin D receptor is essential for skin stem cells to grow, move, and become different cell types needed for skin healing.
May 2015 in “Journal of The American Academy of Dermatology” Both azathioprine and betamethasone treatments help with hair regrowth in alopecia areata, but azathioprine may have fewer side effects.
144 citations
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December 2004 in “Molecular Endocrinology” The vitamin D receptor is essential for normal hair growth, even without its usual binding.
September 2005 in “Journal of Investigative Dermatology” Ferulic acid helps stabilize vitamins C and E for better skin protection from the sun, certain compounds may promote hair growth, atopic dermatitis patients have lower skin defense molecules, older men are more likely to get a type of skin cancer, and a substance called relaxin may prevent age-related skin thickening.
February 2017 in “Cancer Research” Topical calcitriol appears safe and may reduce hair loss during chemotherapy.
15 citations
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May 1987 in “Fundamental and applied toxicology” SMR-2 and SMR-6 are much more toxic than retinoic acid, causing severe side effects.
3 citations
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November 2020 in “Biological Trace Element Research” Men with hair loss may lack zinc, copper, and vitamin D; supplements could help.
August 2024 in “IAHS Medical Journal” Low vitamin D and ferritin levels are linked to female hair loss.
January 2019 in “Frontiers in neurology” A nutrition program improved a young woman's concussion symptoms.
3 citations
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July 2025 in “Reproductive Biology and Endocrinology” Chromium, inositol, and omega-3 can help manage PCOS symptoms.
26 citations
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June 2001 in “PTR. Phytotherapy research/Phytotherapy research” Procyanidin B-2 lotion might help men grow thicker hair without side effects.
November 2025 in “Bioscientia Medicina Journal of Biomedicine and Translational Research” A combined treatment with microneedling and vitamin D3 led to complete hair regrowth in a woman with stubborn patch alopecia areata.
8 citations
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March 2011 in “Endocrine” A new gene mutation causes vitamin D-resistant rickets and hair loss in two siblings.
25 citations
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April 2019 in “Journal of The American Academy of Dermatology” Using 2% tofacitinib cream with narrowband ultraviolet B improved facial vitiligo by 70% in patients who didn't respond to previous treatments, with no side effects reported.
Treating vitiligo with stem cells and melanocytes from hair, along with UVB light, works better than without the light.
29 citations
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June 2000 in “Endocrinology” Alopecia in VDR knockout mice is due to impaired hair cycle initiation, not keratinocyte issues.
18 citations
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October 2014 in “Experimental Biology and Medicine” Eating vitamin A affects hair growth and health by changing cell signals in mice.
June 2004 in “Journal of Investigative Dermatology” Increased pigmentation may protect skin from UVB, new targets for skin disease treatments were identified, sunscreen ingredients don't affect hormones, TNF-α inhibitors may help diabetic wounds, and certain treatments could prevent chemotherapy-induced hair loss.
12 citations
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March 2019 in “Cosmetics” The oral supplement with Pinus pinaster and Grape seed extract, used with sunscreen, effectively and safely improved mild-to-moderate facial melasma.
4 citations
,
March 2021 in “Experimental dermatology” Minoxidil increases nail growth more than biotin.
January 1954 in “DMW - Deutsche Medizinische Wochenschrift”
2 citations
,
August 2020 in “JCRPE” A girl with Denys-Drash syndrome was misdiagnosed due to biotin affecting her hormone test results.
January 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Vitamin A levels don't significantly affect alopecia areata.
March 2023 in “Pakistan Journal of Medical and Health Sciences” Low vitamin D levels are linked to higher rates of hair loss in women.
January 2008 in “Linchuang pifuke zazhi” Betamethasone activates and increases the growth of certain skin cells from hair follicles.
September 2018 in “PubMed” New strategies like vitamin A and dextromethorphan can help reduce methotrexate side effects and improve patient adherence.
20 citations
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July 2017 in “Scientific Reports” A single amino acid change in the vitamin D receptor can disrupt its function and lead to hair loss.
The supplement may reduce hair shedding but needs more research for skin benefits.
April 2008 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” The vitamin D receptor helps control hair growth and may protect against certain skin tumors.