Our skin blackening serum contains glycerin and hydroxyethyl cellulose. It can effectively lighten the dark, lighten the skin, moisturize and nourish the skin, soften the keratin, and make the skin elastic and smooth. Its use method is very simple: after cleansing, directly apply to the skin dark knot, knees, elbows. Athletes and feet. Clean it two to three times a day. Exfoliate, remove melanin, improve dullness, yellowing, enhance luster, strong whitening ability, keep skin white and shiny.