ZO Skin Health Radical Night Repair targets the signs of ageing with a special blend of skin defenders. Thanks to being formulated with a 1% retinol concentration - the highest you will find in any over-the-counter skin products - it works to target aged and UV-damaged skin with more effectiveness than any other treatment. Additionally, dramatic improvements to uneven skin pigmentation, texture and laxity are delivered by microencapsulated vitamin A, with other benefits including reducing the appearance of fine lines and wrinkles.