I have chronic acne on my back for many years. Nothing has ever helped except roaccutane, which i cannot take again. I have had 2 sessions of N-Lite laser on my back with not much result yet. As the acne is so bad I expected this. They said at least 3 treatments. Had anyone had experience with N-Lite for acne on the back? Is it worth persevering with? Has anyone seen great results with it? Any advice greatly appreciated!