This is the DS Laboratories Trioxil.PM Anti-Acne Gel. Trioxil.PM contains 14 percent bisazulene, a unique acne fighting compound that is clinically proven to reduce and prevent acne without the drying, redness and swelling that often accompanies the use of benzoyl peroxide, salicylic acid, and tretinoin. The lightweight gel gives you complete skin enhancement by encouraging new cell growth, improving skin tone and providing anti-inflammatory and anti-bacterial benefits.