Medik8's Crystal Retinal Ladder reaches new heights with Crystal Retinal™ 20, Medik8's highest strength Retinal formulated especially for highly experienced Vitamin A users. Fortified with encapsulated retinaldehyde (0.2%), an advanced alternative to retinol, this ground-breaking overnight serum-cream works 11x faster than classic forms of retinol. Elevated with antioxidant Vitamin E, Glycerin, and Hyaluronic Acid, this supercharged formula works to visibly reduce the appearance of fine lines and wrinkles while enhancing visible tone and texture for a more youthful-looking complexion. Unmatched in its age-defying power, Crystal Retinal 20 has double the strength of Crystal Retinal 10. Suitable for all skin types. 

Important Usage Information: 
Crystal Retinal 20 should only be used by those who have comfortably finished at least 2 tubes of Crystal Retinal 10, due to its very high strength of retinal (0.2%).