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.
3 citations
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April 2019 in “Journal of Dermatological Treatment” Caffeine shows promise for treating some types of hair loss, but more research is needed.
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.
1 citations
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March 2018 in “Dermatologie pro praxi” Most over-the-counter hair loss treatments lack strong evidence of effectiveness, except for minoxidil, which works but stops working if you stop using it.