Flash Rinse 1 Minute Facial by REN, Instantly revitalizes and visibly rejuvenates the skin, Vitamin C stimulates collagen and evens out skin tone, Boswellic Acid aims to reduce the appearance of lines, Tones, firms and banishes gray skin. ABOUT REN Pioneering skincare brand REN give your natural beauty a boost with their 100% plant and mineral derived range. Showing their skin-caring side, their anti-aging creams, luxe body washes, balms and signature Moroccan Rose Otto line are all heavy on results but free from unfriendly synthetics.