Improve efficacy
HA is the main component of connective tissues such as the intercellular substance, vitreous body, and synovial fluid of the human body. It has the characteristics of water retention, maintenance of extracellular space, regulation of osmotic pressure, lubrication, and promotion of cell repair in the body. As a carrier of ophthalmic drugs, it prolongs the residence time of the drug on the ocular surface by increasing the viscosity of the eye drop, improves the bioavailability of the drug, and reduces the irritation of the drug to the eye.
Adjuvant therapy: It can be injected directly into the joint cavity as a lubricant for the treatment of arthritis [1] . Moisturizing Sodium Hyaluronate's moisturizing effect in skin tissue is one of its most important physiological functions. Sufficient moisture makes the skin smooth and delicate. HA has the highest moisture absorption under low relative humidity (33%), and the lowest moisture absorption under high relative humidity (75%), which is suitable for the skin's moisturizing needs of cosmetics in different seasons and different environmental humidity, without greasy feeling and clogging The feeling of pores.
Wrinkle resistance
The moisture level of the skin is closely related to the content of hyaluronic acid. With the increase of age, the content of hyaluronic acid in the skin decreases, which weakens the skin's water-retention function and causes wrinkles. The aqueous solution of sodium hyaluronate has strong viscoelasticity and lubricity, and when applied to the surface of the skin, it can form a moisturizing and breathable film to keep the skin moist and bright. Small molecule hyaluronic acid can penetrate into the dermis layer, promote blood microcirculation, facilitate the absorption of nutrients by the skin, and play a role in beauty and anti-wrinkle health care.
Film-forming and lubricating properties belong to high molecular polymers. When smearing, the lubricating feeling is obvious and the hand feel is good. The macromolecules form a breathable film on the surface of the skin, making the skin smooth and moist, and blocking the invasion of foreign bacteria and dust. Sodium can penetrate into the dermis, slightly dilate capillaries, increase blood circulation, improve intermediate metabolism, promote skin nutrient absorption, and achieve the effect of lubricating and plumping.
Sunscreen and skin damage repair function On the surface of the skin, it can eliminate the active oxygen free radicals generated by ultraviolet radiation in the sun, protect the skin from ultraviolet rays, and at the same time, it can also promote the skin regeneration of the injured part by promoting the proliferation and differentiation of epidermal cells.
Moisturizing effect
Experiments showed that sodium hyaluronate had the highest moisture absorption at low relative humidity (33%) and the lowest at high relative humidity (75%) compared to these humectants. This unique property is adapting to the skin's requirements for the moisturizing effect of cosmetics in different seasons and different environmental humidity, such as dry winter and humid summer. The moisturizing property of sodium hyaluronate is related to its quality, the higher the quality, the better the moisturizing performance. Sodium hyaluronate is rarely used alone as a moisturizing agent, but is often used in combination with other moisturizing agents.
