How to choose moisturizing ingredients in skin care products?

The most well-known skin care ingredient for skin moisturizing is hyaluronic acid. 

What is hyaluronic acid? Hyaluronic acid is the common name for hyaluronic acid.

Structurally, it is actually the condensation of two glucose derivatives, and then repeating this structure continuously, it becomes hyaluronic acid, which is very close to the structure of most polysaccharides. It is because of this structure that most Polysaccharides have the function of moisturizing.

But why is hyaluronic acid so popular as a moisturizing ingredient? Mainly, hyaluronic acid is a kind of natural moisturizing factor in the skin, which has an extremely powerful moisturizing effect. Many popular moisturizing ingredients are also inherent in the skin. Not only are they very safe, but they can also supplement some of the things lost in the skin, instead of being covered on the skin like traditional mineral oil, which is not easy to absorb.

 In addition, hyaluronic acid is also an indispensable component in other tissues of the human body, such as eyes, joints, nerve tissues, etc. Hyaluronic acid was used as a medicinal ingredient in the beginning, such as things like eye drops that we know.

Absorption and utilization of hyaluronic acid:

Hyaluronic acid mainly plays the role of moisturizing and hydrating. There are 3 kinds of molecular weight, the large molecular weight is usually one million Daltons, the medium molecular weight is several hundred thousand Daltons, and the small molecular weight is several thousand Daltons. The smaller the molecular weight, the better the absorption effect, and the skin feels normal after drying. The larger the molecular weight, the worse the absorption, and the skin feels slippery after drying.

Generally speaking, the name of hyaluronic acid products with small molecular weight will be called hydrolyzed hyaluronic acid, the molecular weight is about several thousand to ten thousand, and the size is nano-level, which is easy to penetrate the skin. Experimental data from many companies have shown that low molecular weight hyaluronic acid can penetrate to approximately the depth of the dermis.

Other common moisturizing ingredients in Japanese cosmetics include glycerin and diglycerol.

 Diglycerol is a polyhydroxy compound in which two molecules of glycerol are linked by an ether bond.

The molecular weight of diglycerol is higher than that of glycerin, and it remains on the skin for a longer period of time. Therefore, diglycerol absorbs water from human skin less and more slowly than glycerin. Therefore, the use of diglycerol in the formula can provide a milder and longer-lasting moisturizing effect to the skin

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