Esthederm Sérum Intensif Hyaluronic acid is a moisturizing serum containing hyaluronic acid, a molecule that is naturally present in the skin as a water reserve. This serum is made from a patented complex of three different forms of hyaluronic acid that penetrate the deep layers of the epidermis in order to redensify tissue by filling it with water. The skin is instantly intensely hydrated: supple, luminous, comfortable. Wrinkles and fine lines are filled in from the inside. How to use: Apply to face, neck and décolleté combined with the Intensif Hyaluronic Cream in the morning and/or evening. Used by itself, this cream is ideal for men, oily skins and in the summer. Use as a 2-month intensive treatment for best results.