VC-IP (Ascorbyl Tetraisopalmitate) 3% A type of esterified vitamins that is natural and highly-effective concerning skin whitening. Compared with the water-soluble vitamin C that will eventually be excreted from the body, this fat-soluble VC-IP offers significant and long-lasting effect, and is much more stable and gentle (non-irritant). It promotes collagen synthesis to prevent skin from aging, improves cell reproduction to slow down the aging process, and reduces skin melanin.