1.7 oz. An overnight retinol mask treatment that restores vitality and encourages cellular rate. The unique delivery system for the stabilized retinol infuses the skin more effectively to provide maximum results. KemSpheres is the delivery system that allows the skin to easily absorb Retinol with less irritation and the microspheres help to prevent dehydration, keeping the skin supple and soft. Use a couple times per week to restore vitality to dull, tired skin and reduce fine lines and wrinkles while providing an all over more even complexion.