All trans-retinol (pure Vitamin A) provides effective topical vitamin A with a low incidence of irritation. Achieve a smoother, firmer, more evenly toned skin, reduction in the appearance of fine lines, wrinkles, and pore size. This serum contains Green Tea Polyphenol, which help to protect against actinic damage. Similar to the retinol pads, the timed release of the retinol is not as irritating and more moisturizing. Ideal for dry skin.