Retinol Smoothing Serum assists in the achievement of smoother, firmer and more evenly toned skin. Retinol is an integral part of anti-aging and anti-acne regimens and contains these skin enhancing ingredients; Retinol (Vitamin A), Caffeine (a potent Antioxidant), Green Tea Polyphenols (A Potent Antioxidant), and Hyaluronic Acid (a Humectant and Moisturizer).