Quartz
August 1, 2016
The label on a bottle of sunscreen is a jumble of letters and numbers. One of those acronyms, UVA, refers to a specific range of ultraviolet light that penetrates to the deepest layers of skin and wreaks havoc on skin cells. Today’s sunscreens try to physically block UVA radiation from reaching skin cells, but scientists have developed another way of protecting skin from the inside with a new compound that works in the cells themselves.