September 2025 in “Cosmetics” NMN supplements may improve hair quality and appearance in middle-aged women.
114 citations
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February 2012 in “International Journal of Dermatology” Smoking harms the skin, causing early aging and increasing cancer risk, but stopping smoking can improve skin health.
41 citations
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June 2010 in “Clinics in Dermatology” Smoking harms skin health, causing slower wound healing, more wrinkles, and worsening some skin conditions, but may protect against certain others.
October 2019 in “Postgraduate Medical Journal” Pellagrous dermatitis, caused by niacin deficiency, can be cured with vitamin supplements.
4 citations
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March 2012 in “Annals of oncology” New treatment with green tea polyphenols and nicotinamide improves skin problems from cancer therapy.