learn Caffeine
the stimulant you know and love can be used topically to stimulate hair
- Is caffeinated shampoo effective or just a marketing gimmick? Caffeinated shampoo may help stimulate hair growth, but evidence is limited.
- Does the caffeine in the scalp reach the follicles or stay on the surface? Caffeine can penetrate the scalp and reach hair follicles.
- Does caffeine stimulate hair growth or only slow hair loss? Caffeine stimulates hair follicles in laboratory cultures, and one open-label trial in 210 men found a 0.2% caffeine topical non-inferior to minoxidil 5% on an anagen-ratio endpoint; there is no placebo-controlled evidence that it regrows hair, and none at all in alopecia areata or telogen effluvium.
- All 4 questions on Caffeine →
