An ultra moisture serum formulated to give dry and dehydrated skin a powerful shield to lock in moisture and restore glowing softness comfort and radiance about the brand since its launch in 2000 ren has become a cult favourite giving you ground breaking product formulation the latest hi tech actives rigorous product testing and clinically proven results ren uses only 100 plant and mineral derived actives and is free from skin unfriendly synthetic ingredients item details how to use