"this product is great! i suffer from adult acne and i finally found something that works. at first it used to burn my skin, so what i did was to use a very small amount only for one hour every couple of days. then when the skin wasn&#039;t getting burned anymore i used it for two hours, and then three and so on. now i use it all night about 3 times a week and my skin is 100% acne free! hope this helps!"