I have tried DOZENS of acne treatment products from Amazon, and this was among the worst. My heart sank as soon as I used this cleanser for the first time, because it BURNED. I tried to hold out hope, reasoning that perhaps it was only because it contained strong medicine (which my acne-ravaged skin BADLY needs) and my skin would adjust. HA! ONE DAY of using this and other Mario Badescu products and my skin was so hideously ravaged it looked like I had a contagious disease. I just don't understand it because the ingredients listed in these products are not ones that usually have an adverse effect on my skin. Oh, and by the way, all of the Mario Badescu products I ordered (via Amazon LLC) came UNSEALED, and were not even in any kind of box/container/wrapper. Considering that several of the products were LIQUIDY, that's crazy. But I will say Amazon gave me a FULL refund, which is indeed very honorable and shows great integrity.