Cant believe I totally missed this. I never got acne on my back until after my first cycle a couple years ago and ever since its kinda just stuck around, but I got shafted with bad facial acne genetics so its always been a problem. Ive got an old bottle of the original SA so Ill have to give it a shot. Maybe I'll pick up some R-spray, Ive been hesitant to order from prototype though. I wish he'd give more info on his products on his website though