Hyaluronic acid itself is one of human tissues, divided into large, medium and small molecular weight:
The macromolecule hyaluronic acid has the function of filling and shaping, which is mainly used for shaping nose and chin.
Molecules also fill depressions and are often used to remove wrinkles.
Small molecule hyaluronic acid is as delicate as water. Its main function is to moisturize and tender the skin. It is used to inject into the dermis of human skin, replenish the water missing from the dermis, and repair damaged skin.
However, the human body absorbs hyaluronic acid, and if the long-term effect is to be maintained, it takes 4 to 6 months to re-inject.