Hyaluronic acid, and as a rule the muco-polysaccharides, comprise the building blocks of connective tissue. Glycacid ECO is a biotechnological product composed of precursors of mucopolysaccharides with a high concentration of the base monomer of the hyaluronic acid. The small molecular size of Glycacid ECO enhances intradermal penetration, even forming a base of raw material for the formation of physiological medium-weight hyaluronic acid. This hyaluronic acid is specially adapted to water retention in connective tissue and thus responsible for deep moisturization. Meanwhile, Glycacid ECO increases the permeability of the connective tissue, which makes it an important penetration factor for hydrophilic active ingredients such as plant extracts.