Skin answers to several needs at once. So every formula of the Maison answers to several at once. This is Biologie Plurielle™. Three axes meet in one system: hydration, to hold water where the skin needs it; barrier support, to keep the skin’s own defenses intact; and antioxidant defense, against the daily stress that ages the skin. There is no hero ingredient. A single star active makes a good story and a narrow formula. The Maison prefers the opposite: several materials, ea