What it is: A bio-identical rehydrating face serum that helps optimize the epidermal moisture to reduce the skin's youth markers.What it does: The face serum encourages synthesis with the different components of the Natural Moisturizing Factor (NMF) to compensate for the deficit, linked to aging and sun exposure. It rebuilds the lamellar structure of skin lipids and prevents damage to intercellular cement. It helps activate aquaporins ('water pumps') in cell membranes and corrects deficiencies in hyaluronic acid production, activating its synthesis. How to use: Use the serum twice a day. Pump four drops in the palm of your hands. Apply with smoothing motions and tap gently to optimize penetration.