Skinceuticals Phloretin CF: This astounding formula represents a new class of topical antioxidant treatments. Developed over 5 years of extensive research, this patent-pending formula uses vitamin C, ferulic acid and the newly discovered phloretin. This unique combination protects against free radicals and a wide range of other molecules known to cause skin damage. This formula also boosts the production of essential proteins and fibers while enhancing cell turnover, allowing damaged skin to regain a healthy, undamaged appearance. With regular use, the skin's support structure is improved and the skin takes on a firmer, brighter and more youthful appearance