Recommended for first-time retinol users, Retinol 0.3 from SkinCeuticals corrects past damage on your skin while you sleep, penetrating more deeply to give it a youthful-looking glow. Powered by encapsulated retinol and botanical extracts, this nighttime formula exfoliates skin to reduce the appearance of blemishes while also alleviating irritation and inflammation. Once skin is tolerated, use it at least three times a week for optimal results.