I'm 24 and I have the worst back acne ever. I used to break out really bad on my face in high school but now it's all over my back and my chest. I tried almost everything and nothing worked. I just ordered my kit for the Back/Body and was wondering if anyone has had good outcome from using it and how long did it take to see a difference? Any tips about this product would be nice so I know what to do when I receive the product. Thanks!