Give your skin a rejuvenating boost with powerful Tri-Active Retinol technology. Retinol Anti-Aging Serum Youth Renewal Murad combines 3 retinol and hyaluronic acid technologies to reduce wrinkles in just 2 weeks. Fast-acting retinoid, time-release retinol and retinol booster fight wrinkles, even skin tone and improve skin radiance. Now you can have younger-looking skin.