September 2014 in “Hair transplant forum international” Caffeine, niacinamide, and panthenol may improve hair growth, fullness, and healing when applied to the scalp.
205 citations
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March 2012 in “Science Translational Medicine” PGD2 stops hair growth and is higher in bald men with AGA.
131 citations
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July 2009 in “Experimental Dermatology” The document concludes that specific cells are essential for hair growth and more research is needed to understand how to maintain their hair-inducing properties.
77 citations
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July 2020 in “Cell” Muscles and nerves that cause goosebumps also help control hair growth.
April 2023 in “Clinical theriogenology” The dog's skin condition improved after removing a tumor that was causing hormone imbalances.