Hyaluronic acid is present in almost all tissues and biological fluids. It is an almost omnipresent compound, although it is found in greater amounts in the extracellular matrix of the soft connective tissue.
Almost half of the hyaluronic acid in the human body is formed in the skin, with most of it located in the intercellular space. It can also be found in cartilage or synovial fluid.
With aging, the concentrations of hyaluronic acid gradually decrease, generating a less elastic and less turgid skin, which justifies its use as an active ingredient in the fight against aging.