Caffeine in Alpecin shampoo may help prolong hair root activity and reduce hair loss.
40 citations,
August 2018 in “Skin appendage disorders” Some alternative treatments for hair loss might work, but more research is needed.
21 citations,
January 2017 in “Skin Pharmacology and Physiology” Caffeine-based liquid 0.2% is as effective as minoxidil 5% for treating male hair loss.
61 citations,
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.
3 citations,
April 2019 in “Journal of Dermatological Treatment” Caffeine shows promise for treating some types of hair loss, but more research is needed.