What It Is: This fast-acting 0.3% Retinol night serum accelerates skin surface cell renewal with Retinol that penetrates up to 15 surface layers deep into the skin. Experience visible reduction of fine lines in just 5 days, and visible improvement in deep wrinkles in 2 weeks. To ensure maximum efficacy, its innovative packaging isolates a high concentration of pure Retinol powder so it can be freshly mixed into the serum upon first use. With continuous use, this night serum with Retinol helps skin look renewed for a visibly smoother, more youthful appearance. What Its Good For: Retinol penetrates up to 15 surface layers deep, Accelerated skin surface cell renewal in just 5 days, Visible reduction of fine lines in 5 days, Visible reduction of wrinkles, including deep wrinkles in 2 weeks, Innovative packaging that separates a high concentration of pure Retinol powder to freshly mix for application, 100% showed reduction in wrinkles.