Serum Guinot Hydra Summum intensive and deeply moisturizing effect Serum Hydra Summum, intensive and deeply moisturizing formula, for all skin types. Strengthens the structure of the skin barrier to limit water loss and achieve an optimal level of hydration. Redensifies skin wrinkles caused by dehydration. It allows the restoration of water retention capacity by stimulating the synthesis of water retention molecules. It promotes hydration and improves water diffusion in the skin by stimulating the synthesis of aquaporins. These proteins form an intercellular channel that facilitates the circulation of water. Thanks to its concentration of active ingredients and adapted texture, Guinot Hydra Summum serum ensures rapid optimal hydration of the skin. The skin is soft, refreshed, toned, smooth and shiny. Benefits: Guinot Hydra Summum quickly restores the optimal level of skin hydration characteristic of young skin. The skin is velvety. The skin feels comfortable, it is denser, smoother and radiant. Key ingredients and actives recreate the hydration levels characteristic of young skin with a lasting effect: Hydralogic Complex (high concentration of Hyaluronic Acid and Aquasilanol): Forms an anti-evaporation barrier: strengthens the skin's barrier structure to limit water loss and reach a level optimal hydration, by stimulating the synthesis of "water reservoir" molecules. Infuses the skin with water: helps to restore the skin's ability to retain moisture by stimulating the synthesis of "water reservoir" molecules. It stimulates hydration and improves the diffusion of hydration in the skin by stimulating the synthesis of Aquaporins. These proteins form an intercellular channel to facilitate the flow of hydration. Ideal for all skin types