If our Acne Stop Kit has not worked or you are unable to use benzoyl peroxide, retinol products are my third best recommended product. Start with a Level I bottle of Derm-A-Gel and then if you are not experiencing any irritation you can increase to Level II Exfol-A. For very resilient, thick and oily skin you can upgrade to to Level III Exfol-A Forte. Use every other night for two weeks, then go to every nigh. A very thin coat is all that is needed. You must use spf every morning with retinols. I recommend Peter Thomas Roth Mineral sunscreens.