The Hyaluronic Acid solution is one of the best known and scientifically proven methods for providing the epidermis with deep hydration, vigor and elasticity. The hyaluronic acid used in this serum has 3 molecular weights (very low, medium and high) that work synergistically to obtain significant hydration, regeneration and anti-aging results. In fact, the very low molecular weight is able to penetrate the epidermis and reach the dermis, where it performs its very important regenerative function. Medium molecular weight hyaluronic acid acts at the level of the epidermis, to increase hydration, while cross-linked hyaluronic acid acts on the stratum corneum to repair and defend the skin from external aggression. Size - 15 ml