Magnesium Ascorbyl Phosphate is one of the most potent antioxidants for the skin, and Magnesium Ascorbyl Phosphate protects against photoaging, UV-induced immunosuppression. It also increases collagen synthesis, stabilizes those fibers.Magnesium Ascorbyl Phosphate like Vitamin C functions,reduces melanin synthesis by tyrosinase inhibition,acts as an effective skin lightening and brightening agent on unevenly toned skin.