iS Clinical White Lightening Serum - 1 oz. is a powerful, anti-aging, lightening treatment formulated to target discoloration and hyper-pigmentation. This product contains advanced skin care ingredients that inhibit melanin, the substance that is responsible for pigment. This lightening serum produces professional skin lightening effects and helps prevent discoloration from occurring. This product also exfoliates to create a smooth complexion and a more youthful look.