Caffeine in Skincare: Its Role in Skin Cancer, Sun Protection, and Cosmetics.

Caffeine is ubiquitous in our society-not only in the drinks consumed but also increasingly in dermatologic topicals. Given that coffee and caffeine are increasingly used for the production of many dermatologic anti-cancer topicals, sunscreens, and cosmetics, it is of imperative importance to review the basic science and clinical evidence for such claims. In this concise review, we outline the current evidence.