Glossary

Hyaluronic acid represents 50% of the basic substance called extracellular matrix in the skin. This substance contributes to the dermis' morphogenesis, acts as a support for the blood vessels, nerve fibres and glands, plays a role in the skin's metabolic exchanges, influences the distribution of water, electrolytes, and pheromones in the skin's different compartments and plays an important role in moisturising. With age, the quantity and quality of hyaluronic acid decreases, thus disrupting the skin's physiology and its aesthetic quality. The skin dries out, wrinkles and becomes hollow.