As light as it is comfortable, this intense hydrating bi-phase serum quenches irritated, dull, and uneven skin. Its secret? Organic, medicinal kalanchoe extract, a powerful natural hydration activator that boosts the skins hyaluronic acid* production. Its beauty bonus? Bi-Phase Serum refines the skins texture and smooths its surface. Your quenched skin is fresh, comfortable, radiant, and vibrant. For even more hydration, Bi-Phase Serum can be used together with the Hydra-Essentiel cream suitable for your skin type.*The sponge molecule: the skins natural water retention system.