Intensive anti-wrinkle serum to be used in combination with daily anti-aging care products. High and low molecular weight hyaluronic acid. As we get older, the presence of this substance decreases considerably and at 50 years of age, for example, we only have 50% of our hyaluronic acid capital left. This causes loss of volume and firmness and the appearance of wrinkles, and therefore the aging of the skin. High molecular weight hyaluronic acid acts on the cell surface, forming a protective plate that prevents transepidermal water loss thanks to to its film-forming capacity. Low molecular weight hyaluronic acid is capable of penetrating the skin, where, thanks to its ability to swell by absorbing water molecules, it fills in wrinkles and exerts a tensor effect.