What it is: An oil-free serum that helps visibly brighten and smooth skin over time. What it does: Vitamin C ester gives the appearance of collagen-rich skin by visibly smoothing, brightening and minimizing discoloration over time. Glycolic acid instantly exfoliates and hydrates and visibly minimizes discoloration, and a copper complex helps improve firmness and elasticity over time by hydrating and energizing skin. How to use: After cleansing, massage onto your face and neck using a gentle, upward motion. Wait until fully absorbed and follow with your favorite Perricone MD moisturizer. Use morning and evening. 2 oz. Oil-free Made in the USA