Obagi Professional-C Serum 20% is an award-winning antioxidant powerhouse that delivers visible results. Formulated with 20% L-ascorbic acid, this high-performance serum targets fine lines, wrinkles, and dark spots while brightening your complexion. The concentrated formula absorbs instantly, leaving skin silky and refreshed—ideal for normal to oily skin types. Recognized as a 2025 Allure Best of Beauty Winner, this professional-grade serum helps your skin rebound from visible damage and restore a youthful, radiant appearance.