Caffeine in Alpecin shampoo may help prolong hair root activity and reduce hair loss.
21 citations
,
March 2006 in “Seminars in Cutaneous Medicine and Surgery” This review discusses a clinical approach to diagnosing alopecia through patient history and clinical findings, but it reports no new clinical results.
23 citations
,
January 2003 in “Journal of Pediatric Endocrinology and Metabolism” This study observed that the use of hormonal hair products remains common among US Army School personnel, with higher use rates among non-white, female, and enlisted individuals.
40 citations
,
August 2018 in “Skin appendage disorders” This review examines complementary and alternative medicine for alopecia and finds limited support from robust clinical trials, highlighting the need for standardized studies to evaluate efficacy and safety.
21 citations
,
January 2017 in “Skin Pharmacology and Physiology” In this noninferiority study, researchers found that a 0.2% caffeine-based topical liquid was not less effective than 5% minoxidil solution in improving hair growth in men with androgenetic alopecia over six months.