Skin Renewing Vitamin C Serum 30ml: Developed with dermatologists, CeraVe Vitamin C Serum visibly brightens & helps to restore the protective skin barrier. Potent antioxidant L-Ascorbic acid (the purest form of vitamin C) helps to even skin tone & continuously brighten while helping to defend against free radicals & provide antioxidant benefits. Gentle, lightweight formula helps restore the protective skin barrier & improve hydration, leaving skin soft, radiant, & healthy-looking.