Turbo Booster C 99.8% Topical Vitamin C Powder - BenefitsMix in the palm of your hand with any of your favorite Philosophy products to instantly convert them into a state-of-the-art vitamin C formulaTurbo Booster C Powder is a 99.8% high-potency topical, vitamin C powder that helps prevent premature aging by acting as an antioxidant and promoting collagen synthesis, which helps improve the skin's overall tone and texture-Philosophy Turbo Booster C Powder - .25oz