Hyaluronic acid is a hyaluronic acid that is widely distributed in various parts of the body, such as joints and blood vessels, and can regulate cell permeability, regulate the operation and metabolism of proteins and water electrolytes, and help promote the healing of wounds. In medical treatment, hyaluronic acid can be used in the treatment of arthritis, and as an auxiliary drug in ophthalmology, cardiac surgery and surgery, and has certain efficacy in the treatment of burns and frostbite, and can also be used in medical cosmetology. In medical aesthetics, hyaluronic acid is used for wrinkle removal, filling, and hydration injections. Many current cosmetics contain hyaluronic acid, and some manufacturers even produce hyaluronic acid that can be applied directly to the epidermis, but hyaluronic acid rubbed on the face can only act on the epidermis and cannot penetrate deeply into the skin, making it difficult to achieve good moisturizing and filling effects. Also due to the superficial action of hyaluronic acid, it generally does not have side effects, but its composition contains sodium ions, which can gradually deepen the color of the skin if used for a long time. Therefore, when using cosmetics and skin care products that contain hyaluronic acid ingredients, beauty seekers must choose regular manufacturers and products approved for listing by the Drug Enforcement Administration.