“…1 Since the procedure was first described in 1911 by Brunings, there has been continuous evolution both in terms of injection materials and injection routes. 1,2 Broadly speaking, injectable fillers can be temporary, for example, gelfoam, fat, collagen, acellular dermis, and hyaluronic acid (HA), [3][4][5][6][7] or permanent or semipermanent, for example, teflon, and more recently hydroxylapatite and silicone. [8][9][10] There are advantages and disadvantages to each material and none can be considered ''ideal'' in every situation.…”