Facial fat grafting is a procedure that takes fat from one part of your body and injects it into your face to restore lost volume. Unlike synthetic fillers that dissolve over months, transferred fat can integrate permanently into facial tissue, though a portion of it is naturally reabsorbed. The procedure is used both for cosmetic rejuvenation and for reconstructing areas affected by scarring or injury.
How the Procedure Works
Facial fat grafting happens in three stages: harvesting, processing, and transfer. First, a surgeon uses liposuction to collect fat from a donor site on your body, typically the abdomen, thighs, or flanks. The amount removed is relatively small compared to body-contouring liposuction, so the donor site usually heals quickly with minimal scarring.
Once collected, the fat goes through a processing step to separate viable fat cells from blood, oil, and other fluid. Surgeons use different techniques for this. Centrifugation spins the fat to concentrate it, which may preserve more of the stem-like progenitor cells that help grafts survive, but spinning too aggressively can damage the fat cells themselves. Gravity sedimentation is gentler but can leave the fat diluted with unwanted fluid. Washing and filtration fall somewhere in between. No single method has been proven clearly superior, and most surgeons develop a preference based on their training and results.
Finally, the purified fat is loaded into small syringes and injected into targeted areas of the face using thin cannulas or needles. The surgeon typically places the fat in multiple tiny deposits across different tissue layers rather than in one large clump. This maximizes the chance that each fat cell ends up close enough to a blood supply to survive.
Where Fat Can Be Placed
Fat grafting can treat a wide range of facial areas. The most common targets are the cheeks, temples, under-eye hollows, nasolabial folds (the lines running from the nose to the corners of the mouth), chin, lips, and forehead. It can also improve the appearance of facial scars. Essentially, anywhere the face has lost volume or developed hollowness with age is a potential treatment zone.
Different Fat Sizes for Different Goals
Not all fat injections are the same. Surgeons categorize harvested fat into three types based on particle size, and each serves a different purpose.
- Macrofat consists of larger particles (above 2.4 mm) and is used when significant volume is needed, like in breast or buttock augmentation. It’s less commonly used on the face due to the risk of visible irregularities.
- Microfat uses smaller particles (under 1.2 mm) and is the standard choice for facial areas like the forehead, eyelids, brows, nose, and cheeks. The smaller size allows more precise placement with less risk of lumps.
- Nanofat has the finest particles (400 to 600 micrometers) and can be injected with very thin needles directly into the skin’s surface layers. It doesn’t add much volume. Instead, it’s used to improve skin quality, treat fine wrinkles, and promote tissue regeneration. Surgeons often inject microfat and nanofat together: microfat for structure and volume, nanofat for skin texture.
How Much Fat Survives
This is the biggest variable in fat grafting and the reason results can be somewhat unpredictable. Studies show that anywhere from 30% to 83% of injected facial fat survives long-term, a wide range that depends on the surgeon’s technique, processing method, injection site, and individual biology. An older benchmark from the American Society of Plastic and Reconstructive Surgeons estimated that only about 30% of injected fat could be expected to survive at one year, though more recent data suggests many patients retain significantly more.
Because some fat is always reabsorbed, surgeons typically overfill slightly during the initial procedure. Your face will look noticeably fuller than the final result in the first few weeks. Some patients need a second session months later to touch up areas where more fat was reabsorbed than expected. Once fat cells establish a blood supply and integrate into the surrounding tissue, they behave like normal fat cells and can last indefinitely.
How It Compares to Fillers
Hyaluronic acid fillers are the main alternative for restoring facial volume, and the comparison comes down to longevity versus convenience. Fillers are a quick office visit with minimal downtime, but results typically last a few months to a year before the body breaks them down. Fat grafting requires a surgical procedure with a longer recovery, but the fat that successfully integrates stays permanently. For people who need substantial volume restoration around the eyes, cheeks, or jawline, fat grafting tends to produce more natural and longer-lasting results. For smaller touch-ups or people who want a trial run before committing, fillers offer lower stakes.
Recovery Week by Week
Expect visible swelling and bruising right away, both on your face and at the donor site. The first two to three days are the most uncomfortable. Keeping your head elevated and using cold compresses helps manage swelling. Most people use over-the-counter or prescribed pain medication during this window.
By days four and five, swelling and bruising start to fade. By the end of the first week, the improvement is more noticeable, and initial discomfort drops significantly. Around days eight to ten, your new facial contours start becoming visible beneath the remaining swelling.
Most people feel comfortable returning to their normal routine and going out in public around the two-week mark, using a bit of makeup to cover any residual bruising. Some mild swelling can linger for several more weeks, and the final result won’t be fully apparent until the body finishes reabsorbing the fat that didn’t take, which can take three to six months.
Risks and Complications
The overall complication rate for facial fat grafting is estimated at around 2%, making it relatively safe as surgical procedures go. But when complications do occur, they span a range of severity.
The most common side effects are prolonged swelling (accounting for about 20% of reported adverse events in one large review of over 4,500 patients) and surface irregularities like lumps or unevenness (about 16%). Acne flare-ups occurred in roughly 14% of cases. Fat necrosis, where transferred fat cells die and form firm nodules or oil cysts under the skin, accounted for about 8.5% of adverse events. Asymmetry was reported in about 3.7%. Roughly a third of all complications required a follow-up procedure to correct, including cases of fat overgrowth (where the graft gains too much volume), necrosis, cyst formation, and asymmetry.
The most serious risk involves accidental injection into a blood vessel, which can block blood flow. This is rare but was the single largest category of severe complications in that same review. Choosing an experienced surgeon who specializes in facial fat grafting significantly reduces all of these risks.
Cost
Facial fat grafting is more expensive upfront than filler injections. Brigham and Women’s Hospital lists a baseline price of $4,350, though actual costs vary based on your location, the surgeon, the extent of treatment, and facility fees. Most cosmetic fat grafting is not covered by insurance. When comparing cost to fillers, keep in mind that fillers need to be repeated every several months to a year, so the cumulative expense of maintaining fillers over many years can approach or exceed the one-time cost of fat grafting.