I'm gonna start things off with a disclaimer: I am not a medical professional. If your acne is severe and/or has not responded to OTC treatments (that were used properly) please consult with your doctor or dermatologist. That being said, during my teen years I struggled with acne and have literally used almost every treatment out there, OTC and prescription. I'm now in college and am (largely) acne-free. I figure there may be some PerC members who are or have struggled with acne, so I figure I might as well offer my advice, as I'm about as knowledgable as a non-Medical professional can get. So ask away. Or don't.