Hyaluronic acid is widely used in a variety of cosmetics due to its excellent moisturizing effect and reduced price as production capacity expands.  In 2019, a tmall summary of the main promotional ingredients for cosmetics showed that hyaluronic acid topped the list, with 11.2 percent of cosmetics on the market adding hyaluronic acid, far higher than the second-ranked ingredient.  Niacinamide, for example, makes up only 4.1 percent and collagen 1.8 percent.  This shows the popularity of hyaluronic acid in beauty products.

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In 1934, the laboratory of Kal Meyer of Columbia University in the United States was the first to discover and isolate hyaluronic acid from the vitreous body of the bull’s eye. In the 1950s, the chemical structure of hyaluronic acid was clarified and the molecular formula of hyaluronic acid was confirmed as molecular formula :(C14H21NO11) n.  Because its discoverer, Kal Meyer, was a professor of ophthalmology, it was first used by ophthalmologists as a viscoelastic protective agent during eye surgery.  It was later used in orthopedics as a lubricant to improve arthritis, and then it was developed as an anti-adhesion agent after surgery. It was also used as a sustained-release agent for drugs, and finally it gradually appeared in our daily life as a moisturizer in cosmetic injections and cosmetics.  

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Functions

The moisturizing function of hyaluronic acid lies in that the -OH and carboxyl groups in hyaluronic acid molecules form hydrogen bonds with other polar groups and water molecules to combine a large amount of water.  Hyaluronic acid has excellent film-forming, can in a layer of skin outer port of cinnamon, thin film, which contain the outer skin moisture loss, make the moisture from the basal organization penetrate into cuticle, induced water imbibition and excellent film-forming organic combining together, can provide skin with good moisturizing effect, at the same time ensure the inherent moisture in the skin.

  

Second, hyaluronic acid can scavenge oxygen free radicals from roots, which has been demonstrated in a large number of practices.  Free radicals play an important role in affecting cell structure, producing lipid peroxidation and leading to aging.  Meanwhile, hyaluronic acid bound to the outer layer of the cell can prevent free radicals from approaching the cell membrane and weaken the penetration of -oh free radicals in the outer layer of the cell .  

  

Third, maintenance is also one of its selling points.  The usual remedy is light damage, or UV damage, but this is more like an anti-inflammatory side effect, because the secretion of various inflammatory factors affects the cell’s survival state.  If you can inhibit it directly, then the vitality of the cell will be better.   

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