26 citations
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February 2003 in “The journal of investigative dermatology/Journal of investigative dermatology” An enzyme other than TNAP might be responsible for vitamin B-6 metabolism in the skin.
20 citations
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November 2008 Vitamin D is important for regulating calcium, phosphate, and hair health.
185 citations
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June 2011 in “Molecular and cellular endocrinology” Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.
170 citations
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May 1979 in “The journal of pediatrics/The Journal of pediatrics” Two sisters with rickets and hair loss had a genetic issue with vitamin D processing, and only improved when given phosphorus supplements.
May 2020 in “Current developments in nutrition” Vitamin A affects the resting phase of hair growth, with both low and high levels increasing the number of hair follicles in this phase.