Liquid injectable Silicone (LIS) has been used for decades as a permanent filler for soft tissue augmentation in many locations to include the face, lips, eyelids, buttocks, hips and penis.  LIS has a chemical composition of dimethyl polysiloxane.  Pure LIS is nontoxic, noncarcinogenic, chemically inert and does not support the growth of microorganisms.  It has… Read more »