Cocaine Will Eat Your Skin 39.20K Richard Lawson 06/01/10 03:42PM Filed to: Drugs Drugs Cocaine Uhoh Health shutterstock io9 Feeling young and free while blowing lines in the bathroom of some glitzy LES rat hole? Well, you won't look young for long. Scientists are finding that 80% of impure cocaine in the US contains a chemical that rots flesh.