RoCs Multi Correxion Revive + Glow Serum visibly brightens & tightens better than the #1 luxury Vitamin C serum.* This supercharged formula delivers instant luminosity, and in just 4 weeks, 100% had visibly firmer, more luminous skin, with visibly reduced lines & wrinkles. Formulated with a 10% active Vitamin C Blend, this lightweight daily serum improves skins radiance to reveal a visibly refreshed, more even complexion. For even brighter skin and 24HR hydration, pair with RoC Multi Correxion Revive + Glow Gel Cream. Smooth 4-6 drops of serum over cleansed face and neck AM and/or PM before you apply your moisturizer. Apply a sunscreen of SPF15 or higher during the day while using this product.