Vivier GrenzCine™ contains Vitamin C to work from the inside-out, and Polyamine-DAB™ to work from the outside-in. Vitamin C stimulates collagen production. Polyamine-DAB™ helps the skin appear thicker, healthier, and more luminous. GrenzCine™ increases the firmness of the skin, diminishes fine lines and wrinkles, and also enhances the results of skin procedures, including laser treatments, microdermabrasion, and microneedling.