Fat Graft (Autologous Fat Transfer)-Fat Graft Lipofilling Less Than 10cc-GA (PPSI) Fat grafting is a technique where your own fat is used to fill lines and contours in your face. Fat is initially harvested via liposuction to the abdomen or thighs. This is then purified and injected, using a criss-cross pattern of very fine tunnels into the portion of the face that requires filling.