The procedure of soft tissue augmentation entails the placement of fillermaterials into the skin to replace a deficient dermal or subcutaneouscomponent, thereby restoring the natural look of the skin.Soft tissue augmentation can be used to treat a variety of skin conditionslike facial wrinkles, acne scars, lipo-atrophy, or for lip or cheek augmentation.Different filler materials are available. They are either absorbable likecollagens, hyalans and autologous fat, or non-absorbable like silicone, calciumhydroxylapatite and polymetheylmethacrylate.