SKIN TYPE: All skin types / The hyaluronic acid serum consists of a patented synergistic grouping of 3 hyaluronic acids, provides intensive moisture, plumps the skin and reduces wrinkles and expression lines. Advantages: Fills wrinkles and expression lines by rehydrating the superficial layers. Immediately tightens the skin superficially and deeply. Proven effectiveness: After 2 hours of application, skin moisture increases by 53.4%*. After 28 days of use morning and evening: The skin remains moisturized for a long time (87%**) The skin becomes denser (77%**) *Evaluation of the hydration index by corneometry in 10 volunteers. **Clinical study under dermatological control, 41 women, sensitive and dry skin, with wrinkles and expression lines of the crow's foot type.