Many people don't react to Benzoyl Peroxide - I used to have pretty bad acne as a teen and, like you, if anything it just irritated my skin and made it look worse. It does work for some people though, hence why doctors have people trying it. If you go back to the doc's and tell them it's not working, they'll most likely refer you to a specialist who'll probably prescribe you accutane. Very powerful drug and works for must, but the side effects are horrific if you take too much of the stuff. There's generally no need to take more than 30mg a day.