Injectable filler is a soft tissue filler injected into the skin to help diminish facial wrinkles, restoring a smoother appearance. Most of these wrinkle fillers are temporary and are eventually absorbed by the body. The effects last for about six months or longer. 

Fillers work to improve the appearance of aging skin by:
Filling in wrinkles, fine lines and deep creases
Improving scars
Filling out thin or wrinkled lips
Plumping up cheeks
Treating fat loss
Contouring the jaw line and other areas of the face
Plumping sagging hands