Sodium hyaluronate, whose chemical formula is (c14h20no11na) n, is an inherent component of the human body. It is a glucan aldehyde acid without species specificity. It widely exists in placenta, amniotic fluid, lens, articular cartilage, skin, dermis and other tissues. In organs, it is distributed in the cytoplasm and intercellular substance, and plays a lubricating and nourishing role in the cells and cellular organs contained in them.<br>At the same time, it provides a microenvironment for cell metabolism. It is a kind of gel that is made of natural hyaluronic acid in human body and is used to promote cell regeneration and rhytidectomy.<br>Moisture retention is the most important role of sodium hyaluronate in cosmetics. Compared with other moisturizers, the relative humidity of surrounding environment has little effect on its moisture retention. Cosmetics commonly used moisturizers are glycerin, propylene glycol, sorbitol, polyethylene glycol, sodium lactate, pyrrolidone sodium carboxylate, etc.<br>
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