It's Acne Awareness Month, and we know the only thing more frustrating than recurring breakouts is not knowing where they come from. That's why we're getting to the bottom of the problem. Is it stress? Hormones? Or just terribly bad complexion luck? Worry no more. Instead, clear up your mind — and your skin — with this guide to the causes of breakouts. Once you know what's causing acne to flare up, it's easy to develop a plan of attack. Read on to see what culprits could be responsible for your blemishes (and what to do about it).