Hyaluronic acid is a legendary star in the galaxy of cosmetics and it is almost impossible to imagine basic skin care with out it. It is a natural biopolymer in the human body as an essential component in the vitreous body, ubiquitous lubricant in joints and a significant element of the extracellular matrix and the connective tissue in the skin. In terms of quantity it is the skin that contains the largest portion of it and the content decreases continuously with the advancing age. Hyaluronic acid in cosmetic context almost exclusively relates to sodium hyaluronate.