Retinol 0.5 contains 0.5% pure retinol and is enhanced with the latest stabilization and delivery technologies to ensure the full dosage is slowly and evenly released. Designed to help diminish the appearance of fine lines, wrinkles, and skin discoloration. This night cream can minimize the appearance of pore size, while reducing the appearance of blemishes associated with problematic skin. Retinol 0.5 is recommended for first-time retinol cream users and is ideal for continued use or for conditioning skin as a prerequisite to SkinCeuticals Retinol 1.0. Ingredients: Please be aware that ingredient lists for the products of our brand are updated regularly. Please refer to the ingredient list on your product package for the most up to date list of ingredients to ensure it is suitable to your personal use. Directions: This is a high potency product. Please read information on package insert. Night use only. Always use a broad spectrum sunscreen when using retinol products.