Hyaluronic acid (HA) is an important substance in human skin. Its unique molecular structure possess a variety of important physiological functions, such as lubrication of the joints, toning of vessel wall permeability, regulation of protein to promote wound healing and ect.
Most importantly, it has tremendous moisture holding ability, a 2% aqueous solution of pure HA can firmly hold up to 98% of the water. It is found to be the strongest natural moisturizing substance. It can improve metabolism of skin nutrition, smoothen skin, reduce wrinkles(stretch mark), increase elasticity and prevent aging. Besides than moisturizing, it is also a good skin penetration enhancer. It promotes better nutrient absorption when used in conjunction with other nutrients.