Teosyal is offered in different concentrations depending on the desired effect . It is transparent , pyrogen-free , sterile , and viscoelastic crosslinked gel based on hyaluronic acid of non-animal origin. The substance effectively fills wrinkles. Teosyal is biodegradable and is slowly absorbed. Optimal results appear after just one session, however, certain cases might require two. Periodic additional sessions will improve the result of the procedure.