Benzoyl peroxide / erythromycin
"Started about a month ago. I have had mild acne for years. This product works amazingly. I only apply before I go to sleep. I found twice in a day was to much, and made my face red / sensitive. When that happens I give it a day or two to heal and flake. Let me tell you after it flakes and heals your skin looks great. I continue  to apply before bed. This routine has cleared my acne. One of the only products I have found to actually work. Here's a tip. Make sure to rub into your skin thoroughly."