SkinCeuticals Phloretin CF Gel. Reverse existing damage. Stop the aging relapse. This serum-in-a-gel technology revolutionizes the texture of high potency topical antioxidants while maintaining the integrity and efficacy of proven serum formulations. Phloretin CF® Gel defies the boundaries of gel formulations using a state-of-the-art gelifier that meets the strict vitamin C parameters established by Duke University research. Formulated with an optimized acid combination of 2% phloretin, 10% vitamin C, and 0.5% ferulic acid, this serum-in-a-gel protects skin from the range of reactive molecules known to cause DNA mutations and damage among the integral cell types. This trusted antioxidant trio also accelerates cell turnover and stimulates collagen synthesis to boost skin's structure for a firmer, brighter complexion. Used daily, this preventive and corrective treatment provides broad-range photoprotection and conquers damage at every level of skin. Controlled penetration and a soft, comforting finish makes Phloretin CF® Gel ideal for sensitive skin, ethnic skin types, men, and those who do not like to layer products. Suitable for problematic, normal, combination, oily, or sensitive skin types.