Hyaluronic acid is a component of skin tissue with properties such as water retention, lubricity, film-forming ability, promotion of epithelial regeneration, and safety. It has a certain repairing effect on the skin barrier of sensitive skin. It belongs to polysaccharides and is widely distributed in various tissues of the human body. It has the function of retaining water and maintaining skin elasticity in the dermis, and there is also a large amount of hyaluronic acid present between cells in the lower layer of the epidermis. Hyaluronic acid is the main component that constitutes the intercellular matrix and extracellular matrix of skin cells. Due to its excellent moisturizing effect, it has become an ideal natural moisturizing factor.

The mechanism of action of hyaluronic acid-Hyaluronic acid has high hydrophilicity and water retention, and can absorb 1000 times its weight of water. Hyaluronic acid, along with other mucopolysaccharides, collagen, and elastin, forms an extracellular gel like matrix that contains a large amount of water, making the skin more supple and elastic.

Hyaluronic acid and skin barrier repair-Hyaluronic acid and the physical barrier of the skinHyaluronic acid can keep the skin hydrated and prevent cracking and wrinkles. Sensitive skin has a damaged barrier, leading to a decrease in moisturizing function, and the skin is prone to dryness, flaking, and sensitivity. ● Hyaluronic acid combines with protein to form proteoglycan molecules with larger molecular weight, forming a gel like structure. It is an important component to keep skin tissue moisture, which can keep skin moisture and prevent chaps and wrinkles.

The moisturizing effect of hyaluronic acid and sebum membrane (hyaluronic acid has good film-forming properties, providing a good moisturizing environment for the skin) ● The main function of sebum membrane is to lubricate the skin, maintain moisture, inhibit microorganisms, block ultraviolet rays, and have anti-inflammatory effects; Damage to the sebum membrane can lead to impaired skin barrier function. The hydroxyl and other polar groups in hyaluronic acid molecules can form hydrogen bonds with water molecules to bind a large amount of water, and have good film-forming properties. They can form a uniform thin film on the surface of the skin, reducing the evaporation of moisture on the skin surface and providing a good moisturizing environment for the skin.

Hyaluronic acid and skin antioxidant function (preventing the production of related enzymes in cells and reducing the formation of free radicals) ● Long term exposure of the skin to ultraviolet radiation can cause damage to the skin barrier function, leading to a series of inflammatory reactions and skin problems. Hyaluronic acid can prevent the production of enzymes related to free radical formation in cells and reduce the formation of free radicals; Prevent free radicals from damaging cell structure, producing lipid peroxidation, and causing aging in the body.

Hyaluronic acid and skin wound healing (preventing the production of related enzymes in cells and reducing the formation of free radicals) ● Small molecule hyaluronic acid can penetrate the normal skin barrier into the dermis, directly promoting cell growth, differentiation, reconstruction, and repair. It has repairing effects such as inhibiting inflammatory reactions, promoting angiogenesis, improving intermediate metabolism, promoting nutrient absorption, and increasing skin elasticity.

-The efficacy of hyaluronic acid-

Hydrating and moisturizing hyaluronic acid contains a large amount of hydroxyl and light groups, which can absorb and form hydrogen bonds in aqueous solutions, and can combine with more than 400 times its own water, with a super moisturizing effect.Tightening and anti-aging can promote the balance of skin nutrition supply and demand, as well as the metabolism of waste, filling the intercellular spaces, reducing fine lines, and making the skin firmer.

Repairing the skin promotes the regeneration of the injured area by promoting the proliferation and differentiation of epidermal cells, clearing oxygen free radicals.Antibacterial and anti-inflammatory can form a gel that can bind cells, ensure normal metabolism and water holding function of cell tissues, prevent harmful substances from invading cells, and prevent various infections.Hyaluronic acid can be used to fill scars caused by pits, trauma, and injuries, and is therefore widely used for filling wrinkles and indentations.

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