November 2023 in “Journal of Cosmetic Dermatology” The topical treatment with caffeine and Procapil 3% improved male pattern hair loss and was well tolerated after 12 weeks.
September 2023 in “Baylor University Medical Center Proceedings” Some alternative supplements might help with hair loss due to androgenetic alopecia.
Redensyl, saw palmetto, and biotin with platelet-rich plasma is a better treatment for hair loss than Procapil with platelet-rich plasma.
6 citations,
October 2021 in “International Journal of Cosmetic Science” Using antioxidants on the scalp can make it healthier and decrease hair loss.
1 citations,
January 2020 in “PubMed” 
61 citations,
January 2018 in “Cosmetics” Coffee silverskin may be a beneficial and safe ingredient for cosmetics, offering hydration, firmness, and potential hair growth benefits.
21 citations,
October 2017 in “Skin Pharmacology and Physiology” Caffeine-based liquid 0.2% is as effective as minoxidil 5% for treating male hair loss.
78 citations,
January 2017 in “Skin appendage disorders” Biotin supplements may improve hair and nail growth in people with certain deficiencies or conditions, but there's not enough evidence to recommend it for healthy individuals.
61 citations,
August 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.
153 citations,
October 2012 in “Skin Pharmacology and Physiology” Caffeine in cosmetics may reduce cellulite, protect skin, and stimulate hair growth, but more research is needed on its use and effects.
182 citations,
December 2007 in “BJCP. British journal of clinical pharmacology/British journal of clinical pharmacology” Hair follicles significantly increase the speed and amount of caffeine absorbed through the skin.
