The best sites for fat transplantation (sometimes called microlipoinjection) appear to be areas with the least movement, such as the cheeks where fat can be successfully injected to replace the fat lost by some people who develop hollow cheeks as they age.
Fat, however, can be transferred into many other areas of the face and has been used to fill out lips, the chin, the hollows underneath the eyes, acne scars, as well as helping to correct defects caused by surgery and trauma related injuries.
Fat transfer to the back of the hands can successfully camouflage the skeleton - like appearance of the hand that can occur with sun damage and ageing, and there are certain doctors who believe that this is the most effective use for fat transfer.
Fat transfer has also become popular recently in the U.S. for women who want larger "J-Lo" (Jennifer Lopez) buttocks.
Transfer to other parts of the body is also possible, but the use of fat to increase the size of breasts, is controversial although it is being increasingly investigated by more cosmetic surgeons.