Derma-nu Retinol Serum is the Highest Quality, Most Potent and Most Effective Serum On The Market. Turn Back The Clock and Reverse The Signs Of Aging. This Retinol Serum, with 2.5% Retinol, Has Been Proven To Create Dramatic Results and Make Your Skin Look and Feel Years Younger! Our Customers Call It a Miracle Face Lift. You Won’t Find A More Effective, More Potent and Higher Quality Retinol Serum On The Market. • Vitamin A has a molecular structure that’s tiny enough to get into the lower layers of skin where it finds collagen and elastin and activates them. • Vitamin A is proven to improve blotchy pigmentation, fine lines, wrinkles, skin texture, skin tone and color, as well as your skins hydration levels.