Caffeine in Alpecin shampoo may help prolong hair root activity and reduce hair loss.
21 citations
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January 2017 in “Skin Pharmacology and Physiology” Caffeine-based liquid 0.2% is as effective as minoxidil 5% for treating male hair loss.
40 citations
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August 2018 in “Skin appendage disorders” Some alternative treatments for hair loss might work, but more research is needed.
61 citations
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May 2014 in “International journal of pharmaceutics” Nanocrystals improve skin penetration and stability of caffeine, suggesting a new method for delivering similar substances through the skin.
September 2014 in “Hair transplant forum international” Caffeine, niacinamide, and panthenol may improve hair growth, fullness, and healing when applied to the scalp.