Fat transfer, also known as fat injection, is a cosmetic procedure in which fat is removed from one area of the body (usually the waist, abdomen, or legs) and then reinjected into very specific areas of the face in order to restore the volume that gives the youthful glow that all of us lose with age or with athletic activity. Also, some individuals have a naturally gaunt or thin face, with little definition, and fat transfer can greatly improve the contours and balance of the face in these patients. While this youthful, healthy glow can also be restored with injectable fillers, the advantages of using fat are that it is your own tissue, which eliminates the chance of an allergic reaction, and that it lasts for many years, if not permanently, as opposed to fillers which typically last one year or less.