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 as little as 5 days, and visible improvement in deep wrinkles in 2 weeks. To ensure maximum efficacy, With continuous use, this night serum with Retinol helps skin look renewed for a visibly smoother, more youthful appearance.