How does fat grafting work?
During fat grafting, liposuction removes fat from a donor area. The fat is then processed to separate debris, excess fluid, and dead cells from the usable fat cells. Discarded fat cells are unlikely to survive in the graft and can even create problems for the good cells.
In the final step of fat grafting, the fat is reinjected in tiny droplets throughout the recipient site's tissue. This ensures a good blood supply to every fat droplet so that the fat graft can survive.
Fat grafting can last an hour to more than four hours, depending on how much fat is transferred. While lip fat transfer takes approximately one hour, breast fat transfer can last between three and four.