1. Difference
Chemically: different forms of matter, hyaluronic acid = hyaluronic acid, sodium hyaluronate = sodium hyaluronate (generally speaking) from a chemical point of view, transparent Sodium hyaluronate is the sodium salt form of hyaluronic acid.
2. Hyaluronic acid
The disaccharide unit hyaluronic acid (Hyaluronan) composed of D-glucuronic acid and N-acetylglucosamine, also known as uronic acid and hyaluronic acid , the basic structure is a large polysaccharide composed of two disaccharide units, D-glucuronic acid and N-acetylglucosamine. Unlike other mucopolysaccharides, it does not contain sulfur. Its hyaline molecules can carry more than 500 times the moisture, and it is recognized as the best moisturizing ingredient today. It is widely used in skin care products and cosmetics.
3. Sodium hyaluronate
Sodium hyaluronate is a substance extracted from cockscombs. It can also be produced through fermentation of lactococci. It is white or off-white granules or powder. No odor, when dry, the nitrogen content is 2.8-4.0, and the glucuronic acid content is 37.0-51.0. It is widely used in the field of cosmetics and has a moisturizing effect.
/iknow-pic.cdn.bcebos.com/91529822720e0cf3872c9f290646f21fbf09aa0d"target="_blank"title=""class="ikqb_img_alink"gt;/iknow-pic.cdn.bcebos.com/91529822720e0cf387 2c9f290646f21fbf09aa0d?x -bce-process=image2Fresize2Cm_lfit2Cw_6002Ch_8002Climit_12Fquality2Cq_852Fformat2Cf_auto"esrc="/91529822720e0cf3872c9f290646f21fbf09aa0d"/gt;
1. Application of hyaluronic acid
1. Applications in beauty and medical beauty
Hyaluronic acid also refers to sodium hyaluronate. Sodium hyaluronate gel is usually used for medical cosmetic injections. It is a water-insoluble gel. As an absorbable filling material, it lasts for a long time (usually 6-12 months) and is not prone to allergic reactions. , the injection is simple and the effect is clear, it has become more and more favored by doctors and beauty-loving women, and is often used for medical beauty.
Sodium hyaluronate has the functions of lubrication, moisturizing and tissue repair. Dermatologists use this to add it to cosmetics. Wrinkles that appear during human aging are also caused by the decrease in the content of sodium hyaluronate. Therefore, the cosmetic injections have a wrinkle-removing effect.
2. Application in the treatment of dry eye disease
Sodium hyaluronate has excellent hydrophilic and lubricating effects, so it can significantly relieve the pain, itching, burning sensation, Clinical symptoms such as foreign body sensation and prolonged tear film rupture time. Researchers agree that sodium hyaluronate can moisturize and lubricate the eyes and eliminate eye discomfort. For example, Hyaluronic acid sodium hyaluronate eye drops are used to treat dry eye syndrome. The main ingredient contained is sodium hyaluronate. Because the vitreous body of the eye contains a large amount of sodium hyaluronate, the eye will not reject this object after it is dropped into the eye. , it will be more comfortable than eye drops containing other ingredients.
Scientific experimental data shows that when hyaluronic acid with a molecular weight of 500,000, 1 million, 2.5 million and 3.5 million is dissolved into a solution of the same concentration of 0.1, the moisturizing performance is compared, indicating its moisturizing and film-forming effect. Increases with increasing molecular weight.
Through experiments, it can be found that with different molecular weights, the benefits of products to our skin are different, at least in different focuses. Some people use purchased chemical raw materials to make it, which is actually very unscientific. You don’t know whether the product you bought is suitable for oral administration (food grade) or external use (cosmetic grade). There is a difference between the two.
There are also cosmetic-grade products with different molecular weights, and their efficacy will be different.
(Source/baike.baidu.com/item/E9808FE6988EE8B4A8E985B8/6098261?fr=aladdin"target="_blank"gt; Hyaluronic acid - Baidu Encyclopedia/baike.baidu.com/item/ E9808FE6988EE8B4A8E985B8E992A0/1597479"target="_blank"gt; Sodium hyaluronate - Baidu Encyclopedia:)