Liquid Oxygen 3-Step Acne Treatment System uses our breakthrough Oxygen science to treat current acne as well as prevent new breakouts. Effective Day 1 in 9 clinical studies, it is proven to kill 99.99% of common acne bacteria on contact. Safe and effective, our formula does not contain drying chemicals or benzoyl peroxide. Thanks to the anti-bacterial and anti-inflammatory properties of oxygen, it eliminates acne-causing bacteria, promotes a moisture barrier and stimulates the production of collagen and elastin. Delivers a powerful boost of pore penetrating oxygen, salicylic acid and Vitamins A, C, D and E for clean, clear healthy-looking skin. Gentle, non-drying, and made for all skin types, especially acne-prone and sensitive skin.