alpha hydroxy acids, aha. glycolic c2h4o3, lactic c3h6o3, malic c4h6o5, tartaric c4h6o6, citric c6h8o7, mandelic acid

acid aha ahas glycolic c2h4o3 lactic c3h6o3 malic c4h6o5 tartaric c4h6o6 citric c6h8o7 c8h8o3 biochemistry biology biological dermatology medicine model skin alpha skeletal supplement additive antioxidant beauty hydroxy cosmetic carbon hydrogen oxygen bactericidal peeling preservative schematic molecule structure chemical chemistry atom illustration vector sheet notebook cage