Hyaluronic acid, also known as hyaluronic acid, a substance is human skin tissue inside the normal matter, it can also be synthesized. In human skin in dry, if there is a sufficient amount of hyaluronic acid, can play an appropriate role in protecting the skin. Beauty industry used widely. This material has some water-absorbing function, but also has a role in water retention and restoration of the skin, the skin does not become too dry. Hyaluronic acid in the stratum corneum generally, gradually forming a layer of moisture-rich film, while water transport inwardly outwardly. When in a dry environment, it is possible to rely on blocking agent, to reduce the evaporation of three external moisture, the moisture can function.
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