Keep water, replenish water and whiten skin. Hyaluronic acid is a kind of chemical substance, which is inherent in the body. It is called uronic acid. It exists in many structures of the eyes and the body. It is a natural substance in the human body. Hyaluronic acid is often used as a filling agent, because it is the body's own material, not easy to appear foreign body reaction, but also has the effect of water retention, can make the skin more water content.<br>
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