GREEN is a clear,transparent and viscous gel supplied in a glass syringe together with one or more 23 neddles. The product is for single use only.GREEN is a unique form of nonannimal,stabilized hyaluronic acid. Hyaluronic acid is a natural polysaccharide which occurs as an important structural element in the skin and in subcutaneous and connective tissues us well as in the synovial tissue and fluid. Hyaluronic acid belongs to a group of very few subsances which are identical in all living organisms.