Redefining SerumUltra Sheer Clearing Treatment Redefining Serum uses clinically proven active ingredients to help clarify troubled skin without irritating or over drying skin. Gentle exfoliants and bacteria blocking peptides combine to ensure healthy cell turnover and smoother, more even toned skin. This ultra sheer skin clarifying, anti aging serum promotes a healthy, spot free complexion, improves skin tone and minimizes the appearance of fine lines and wrinkles.