PCA Skin Intensive Clarity Treatment®: 0.5% pure retinol night is specifically formulated for acne. This advanced nighttime retinol treatment features a delivery system often used in pharmaceuticals, yet entirely new to skincare. The patented 10-hour time-release OmniSome delivery system stabilizes and carries a unique blend of ingredients deeper into the skin for superior results. Retinol and lilac leaf cell culture extract help to provide antioxidant protection and an even skin tone. 2% salicylic acid dramatically reduces acne breakouts. Additional ingredients including niacinamide, hexylresorcinol and ethyl linoleate help improve barrier function, calm the skin and reduce the keratinization that can result in breakouts. Clearer and healthier skin is the result of this breakthrough retinol formulation.