101 DERMA's AHA POWER SERUM is primarily used for exfoliation. promotes collagen and blood flow -corrects discolouration from scars and age spots -improves the appearance of surface lines and wrinkles -prevents acne breakouts -brightens your complexion -increases product absorption HOW TO USE: Wash face with a gentle cleanser. Use AHA serum on the face and leave on for 8-15 mins depending on your skin's tolerance to AHA, Hydrate the skin with a moisturizer or a hydrator. ?