The iconic Double Serum is now also available in a new lighter, easily absorbed formula, with the same proven results on fine lines and wrinkles. Developed by Clarins Research, our unique dual formula combines the identical 27 powerful active ingredients as the original Double Serum that help boost the 5 vital functions of the skin and act on signs of ageing: Regeneration to renew skin texture Nutrition to nourish skin with nutrients Oxygenation to purify skin Hydration to hydrate and moisturise Protection against external stressors