Murad has perfected the science of Retinol with this breakthrough serum, powered by Retinol Tri-Active Technology: a fast-acting Retinoid, a time-released Retinol, and a Retinol booster. This potent, yet gentle, formula quickly and visibly minimizes lines and deep wrinkles, firms, evens skin tone and boosts radiance for more vibrant, youthful-looking skin.