NatuLife BIHAKU Whitening Serum The whitening active ingredient, oil-soluble vitamin C, suppresses the production of melanin and prevents spots and freckles caused by sun exposure. It works directly on areas of concern for spots and enhances the penetration of skincare products used afterward. It softens and moisturizes rough, dry skin. A rich oil containing two types of collagen penetrates deep into the skin, protecting it from dryness and providing firmness and radiance. Whitening Serum 20ml Quasi-drug Brand new, unopened.