Sodium hyaluronate is the sodium salt form of hyaluronic acid. It is a high molecular weight straight-chain mucopolysaccharide composed of N-acetylglucosamine and D-glucuronic acid disaccharide units repeatedly connected. It is widely present in the extracellular matrix of connective tissues of animals and humans.
Its highly stretched and irregularly curled configuration in aqueous solution allows it to occupy a large area, and the molecular chains are intertwined to form a continuous mesh structure, making sodium hyaluronate like a "molecular sponge" that can absorb and retain thousands of times its own weight of water.
Application of Sodium Hyaluronate
Sodium hyaluronate is currently widely used in medicine, beauty cosmetics, food and textiles. Studies have shown that sodium hyaluronate has moisturizing, lubricating, anti-oxidation, anti-apoptosis, anti-aging, penetration-promoting, anti-inflammatory, barrier repair and other functions. Using it in cosmetics can play a unique role in protecting the skin, keeping the skin moisturized, smooth, delicate, tender and elastic, and has the functions of anti-wrinkle, anti-aging, beauty care and restoring the physiological functions of the skin.
Moreover, sodium hyaluronate has a very strong water absorption capacity, and the water it absorbs is about 500-1000 times its own mass, so it is also a recognized natural moisturizing factor.
Macromolecular sodium hyaluronate can form a breathable film on the surface of the skin, help the skin lock in moisture, and block the invasion of foreign bacteria, dust, and ultraviolet rays, protecting the skin from damage. Small molecule sodium hyaluronate can quickly penetrate into the dermis, slightly dilate capillaries, promote blood circulation, improve metabolism, and promote skin cell nutrient absorption. It has the functions of wrinkle removal, enhancing skin elasticity, and delaying skin aging.
Skin Care Effects of Sodium Hyaluronate
① Moisturizing
Sodium hyaluronate is highly hydrophilic. Its moisture absorption is the highest at low relative humidity (33%), and the lowest at high relative humidity (75%). Because of this unique property, it can adapt to the skin's demand for cosmetic moisturizing in different seasons and different environmental humidity.
It can form a moisturizing film on the surface of the skin, effectively lock in moisture and increase the water content of the skin. As a moisturizer, sodium hyaluronate is rarely used alone and is often used in combination with other moisturizers.
②Repair
When the skin is affected by sun exposure, ultraviolet rays, etc., and becomes red, black, peeling, or has eczema or allergic dermatitis, the powerful blessing of sodium hyaluronate is needed. Because it can promote the proliferation and differentiation of epidermal cells, stimulate cell regeneration and remove oxygen free radicals, promote the repair of damaged tissues, promote the regeneration of skin in injured areas, and accelerate wound healing, prior use also has a certain preventive effect.
③Anti-wrinkle
In our human body, 50% of sodium hyaluronate exists in the dermis of the skin. Sodium hyaluronate + collagen + elastin together form the skin elastic network, maintaining the stability and elasticity of skin tissue. The increase in age will reduce the content of hyaluronic acid in the skin, lose collagen, weaken the skin's water retention function, and produce wrinkles.
Sodium hyaluronate aqueous solution has strong viscoelasticity and lubricity. When applied to the skin surface, it can form a moisturizing and breathable film to keep the skin moisturized and shiny. Small molecule hyaluronic acid can penetrate into the dermis, promote blood microcirculation, facilitate the skin's absorption of nutrients, and play a role in beauty and anti-wrinkle.
④ Nutrition
Sodium hyaluronate is a biological substance inherent in the skin. Exogenous sodium hyaluronate is a supplement to endogenous sodium hyaluronate in the skin. Sodium hyaluronate with a smaller molecular weight is more easily absorbed by the human body into the blood and penetrates into the dermis, thereby replenishing the hyaluronic acid content in the skin, relieving dry skin, and promoting the supply of skin nutrition and the excretion of waste, thereby preventing skin aging and playing a role in beauty and skin care.
⑤ Protection
Sodium hyaluronate is a high molecular polymer with strong lubricity and film-forming properties. After being applied to the skin, it can form a thin film on the skin surface, making the skin smooth and moist, giving people a visually full and elastic effect, and protecting the skin.
⑥ Thickening
Sodium hyaluronate has a high viscosity in aqueous solution, and its 1% aqueous solution is in gel form. It can be added to cosmetics to thicken and stabilize.
From a chemical point of view, sodium hyaluronate is the sodium salt form of hyaluronic acid;
From the perspective of commodity sales, sodium hyaluronate is a common form of commercial hyaluronic acid;
From the perspective of skin care, sodium hyaluronate has a strong hydrating and moisturizing effect. Depending on its molecular weight, the hydrating and moisturizing methods are also different.
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