It works at night, when the skin is believed to be most receptive. Wake up to revitalized skin in just 4 weeks, for a smoother, more radiant appearance. A night cream for a smoother, more radiant appearance. Clinically proven to reduce the appearance of fine lines and deep wrinkles in 12 weeks. Developed with pure RoC ® Retinol and our exclusive mineral complex. Designed for dramatic results yet gentle enough for everyday use. Format: 30 ml.