hyaluronic acid comes from the vitreous humor of the bovine eye. It belongs to mucopolysaccaride ,and is linear, un-branched, high molecular weight polysaccharides containing a repeating disaccharide unit(D-glucuronic and N-acetyl glucosamine).HA weighs about from 100,000 to 1000,000.Its weight lends itself to high viscosity and excellent lubrication within the body. HA has many physiological functions as follows: wound healing; anti-sunburn and repair the injured skin; protection against infection; control of electrolytes and water in extra-cellular fluids; lubrication; maintenance of stable transparent fluid in the eye etc. HA can be used for cosmetic, ointment for external application, nature health-care food for hairdressing and anti-caducity, injection for articular cavity, the medicine of ophthalmic and celiac operation etc. Show More