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Injections of small amounts of fat cells can reduce the appearance of facial lines and improve the overall texture and appearance of facial skin. Unlike collagen injections, which can produce an allergic reaction in some patients, fat cells are taken from the patient's own body. There is no chance of allergy with fat transfer.
Fat transfer is typically performed in a cosmetic surgeon's office under local anesthesia. The process has two key steps. First, fat is harvested from the donor location -- often the abdomen, buttocks, or thighs -- using a needle and syringe. After the extracted fat is separated from the other tissue, it is injected into the recipient sites on the face. Because some of the fat will be reabsorbed by the body, the doctor may initially inject more fat than desired in the end result. Fat transfer is usually an outpatient procedure
Many patients are able to resume normal activities immediately after a fat transfer, but if a large area is treated, some rest may be required. Some bruising and swelling are normal reactions. The patient should avoid sun exposure until they subside. Make-up can be used to conceal bruising, which usually diminishes in about 48 hours. Swelling should be resolved within a few weeks. Patients should be aware that the results of fat transfer are temporary. The length of time the results will last varies from patient to patients and may range from several months to several years. The procedure can be repeated.
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