53 citations,
January 2009 in “Journal of Investigative Dermatology” UVB radiation harms hair growth and health, causing cell death and other changes in human hair follicles.
12 citations,
April 2020 in “British Journal of Dermatology” Caffeine may help reduce stress-induced hair loss.
56 citations,
November 2010 in “Pigment Cell & Melanoma Research” Brain hormones significantly affect hair color and could potentially be used to prevent or reverse grey hair.
September 2004 in “Experimental dermatology” Melatonin directly affects mouse hair follicles and may influence hair growth.
29 citations,
February 2011 in “PloS one” Astressin-B can reverse and prevent hair loss in stressed mice.