Obagi Professional-C Serum, 1 fl oz |30 ml. Bottle Brand New in Retail Box Product description Style:20% Professional-C Serum Product Description Highest concentrated serum with 20% L-ascorbic Acid (vitamin C) , best suited for normal to oily skin. Uniquely formulated to help reduce the appearance of skin aging and leave skin feeling silky soft. Ingredients: propylene glycol, water, L-ascorbic acid, alcohol, ascorbyl glucoside, ethoxydiglycol, phenoxyethanol, sorbitol, sodium hyaluronate, zinc chloride, calcium hydroxide, fragrance Experience the benefits of Vitamin C in Obagi Professional-C products. Brand story Experience the benefits of Vitamin C in Obagi Professional-C products. Obagi Professional-C Serum 20% infuses your skin with the only form of vitamin C suitable for topical application L-ascorbic acid. This formula provides effective antioxidant protection from UV damage as it and encourages the growth of collagen and elastin fibers while it brightens away hyperpigmentation. It is designed to penetrate deep into your skin as the Hyaluronic acid binds moisture. The Obagi skin care line offers uniquely powerful skin care products with a wide range of benefits, including rejuvenating and anti-aging actions. The Obagi system may help to increase smoothness, diminish the appearance of fine lines and wrinkles, improve elasticity, reduce pores, even skin tone, generate balance, normalize oil production, correct blemishes, reduce hyperpigmentation and age spots, increase the skin's tolerance to external elements and its ability to hold moisture through its range of many regimens that work together to achieve a targeted goal.