Size: 30 ml /1 oz SkinCeuticals Retinol 1.0 Maximum Strength Refining Night Cream is perfect for problematic and photo-damaged skin. Retinol 1.0 contains 1% pure retinol, the highest concentration currently available, and should be used for advanced treatment of pre-conditioned skin. SkinCeuticals Retinol 1.0 smoothes and clears away your most stubborn skin issues without causing irritation. Retinol fills wrinkles and reduces acne blemishes. Shea Butter and ceramides smooth and condition the skin. It uses a stabilized formula and advanced delivery system for optimum results. Ideal for those with aging, sun damaged, or acne-prone skin who want clear, smooth, and even-toned skin. Not recommended for sensitive skin.