Vitamin C for the antibody and collagen formation, tissue repair, phenylalanine, tyrosine, folate metabolism, iron, carbohydrate utilization, fat, protein synthesis, maintenance of immune function, hydroxylation of 5-hydroxytryptophan, to maintain the integrity of blood vessels, to promote the absorption of non-heme iron and other necessary, but also vitamin C has an antioxidant, anti-free radicals, inhibit the formation of tyrosinase, so as to The effect of whitening and lightening of spots can be achieved.