This advanced night serum delivers our highest concentration of encapsulated Retinaldehyde, known for its exceptional ability to promote skin renewal and target visible signs of aging. Formulated for experienced Vitamin A users, Crystal Retinal 10 works effectively overnight to visibly smooth the appearance of fine lines and wrinkles, firm the skin, and improve overall skin texture and tone. Experience revitalized skin with consistent use, as this powerful treatment enhances collagen production and combats bacteria associated with breakouts.