To all you acne sufferers out there I just wanted to say that if you have tried everything else then ask your doc to prescribe some Roaccutane (active ingredient isotretinoin). It is MIRACULOUS. My daughter has been battling acne on her face and back for the last 6 years poor kid and nothing really worked, creams, antibiotics, Pill, you name it. A couple of months ago it got really bad again, she was a real Pizza Face, and so we tried Roaccutane. 8 weeks later the acne has completely disappeared. She had a couple of breakouts before her period but they cleared up after a couple of days. The only side effect she's had is dry lips but lip balm fixes that.
Seriously, if you haven't tried this stuff and you have problems with acne then discuss it with your doctor. It will change your life.