Sulfacetamide sodium / sulfur
"This product is absolutely amazing! I had severe acne from birth control and it left me with terrible hyperpigmentation and I still had some cystic acne. I've been using Epiduo which helps but I still was getting bad break outs when I was ovulating and before/during my period. I've been using this product for a few weeks now and see drastic results. Even my hyperpigmentation is fading!!! I couldn't be happier. It's not harsh on your skin at all and it doesn't dry it out. I think everyone should try this product!!! Probably best for moderate/mild acne."