Retinol acts like a super nutrient for your skin cells. It's boosts dozens of important renewing processes in your skin to visibly fill in wrinkles and fine lines, fade dark spots and encourage natural collagen production. Overall, you'll see smoother, more even and youthful-looking skin! Our Enzyme-Active Retinol Serum includes the only form of retinol that is clinically measured to reduce wrinkle depth within 14 days, without irritating your skin.