Submental liposuction is a cosmetic procedure that removes fat from beneath the chin to reduce the appearance of a “double chin.” It targets a specific fat compartment that sits between the skin and the thin muscle layer (called the platysma) running across the front of your neck. The procedure is typically performed under local anesthesia in a single session, with most people back to normal activities within one to two weeks.
The Area Being Treated
The submental region is the space directly below your chin, stretching back toward the top of your throat and bordered on each side just inside the jawline. Research on cadavers has confirmed that the fat here lives in a distinct, self-contained compartment, bounded by the skin on top and the platysma muscle underneath. Its front edge sits at the crease beneath your chin, and its back edge lines up roughly with the angle where your jaw meets your neck.
Because this fat pocket is a discrete compartment, it responds well to targeted removal. It’s also the reason some people develop fullness under the chin even at a relatively low body weight: the compartment can hold a genetically determined amount of fat that doesn’t shrink much with diet or exercise.
How the Procedure Works
Submental lipo is most commonly performed using a tumescent technique. A numbing solution (saline mixed with a local anesthetic and a small amount of adrenaline to control bleeding) is injected into the fat layer through tiny incisions only one to three millimeters wide. The fluid swells the fat compartment, making it easier to break apart, and the anesthetic eliminates pain throughout the procedure. After about 30 minutes for the fluid to distribute evenly, the surgeon inserts a thin hollow tube called a cannula, typically 1.5 to 3 millimeters in diameter, and uses it to suction out the fat.
The entire process usually takes between one and two hours. Because the cannulas are so small, there’s minimal tissue damage, and the incision sites are often left open afterward to let excess fluid drain. You’ll have a compression strap placed under your chin before you head home the same day.
Local vs. General Anesthesia
Most submental liposuction is done under local anesthesia, sometimes with mild oral sedation to help you relax. You’re awake but numb, so you won’t feel pain during the procedure. There’s no breathing tube, no need for an anesthesiologist in most cases, and no groggy recovery from general sedation afterward. Local anesthesia carries a lower overall risk profile and allows you to go home shortly after the procedure is finished. General anesthesia is occasionally used when submental lipo is combined with other surgeries, but for chin-only treatment it’s rarely necessary.
Who Is a Good Candidate
The best candidates are adults within about 30% of their ideal weight who have firm, elastic skin. Skin quality matters because liposuction removes volume underneath, and your skin needs to contract and re-drape smoothly over the new contour. Younger patients and those with good skin elasticity tend to get the cleanest results. If you have significant loose or sagging skin under the chin, liposuction alone may not be enough, since the skin can only tighten so much on its own after the fat is gone.
Nonsmokers heal better and face fewer complications. You should also be in generally good health, with no conditions that impair wound healing.
Recovery Timeline
Swelling and bruising peak during the first one to two weeks. Plan to wear your compression chin strap continuously (removing it only to clean it) for the first five to seven days. After that first week, most surgeons recommend wearing it primarily at night and as needed during the day. By four to six weeks, consistent compression is no longer required, though some people find the strap comfortable at night for a bit longer.
Bruising typically fades within two to three weeks. Most visible swelling resolves by the four-to-six-week mark, but subtle swelling can linger in small amounts for up to six months before your final result is fully apparent. You’ll notice a visible difference within days of the procedure, with continued refinement over the following weeks.
Risks and Complications
In a large study of 987 patients who had neck liposuction under tumescent local anesthesia, the complication rate was very low. Five patients experienced temporary weakness of the marginal mandibular nerve, which controls movement of the lower lip. One patient developed gland drooping, and one had arterial bleeding. No cases of seroma (fluid collection), skin death, scarring, or lasting pigment changes were reported.
The most common side effects you can expect are temporary numbness, bruising, swelling, and minor discomfort at the incision sites. Contour irregularities, where the skin surface appears uneven, are possible but uncommon with experienced surgeons using small cannulas. Infection is rare.
How Long Results Last
Liposuction permanently removes fat cells from the treated area. Those cells don’t grow back. If you maintain your weight after the procedure, your results should hold indefinitely. The key number to keep in mind is your post-procedure weight: if you weighed 130 pounds before surgery and had 6 pounds of fat removed, staying at or below 124 pounds preserves your outcome.
Gaining a small amount of weight (a few pounds) will cause remaining fat cells throughout your body to enlarge slightly, but the treated area will still look better than surrounding areas because it has fewer fat cells. Gaining 10% or more of your body weight can trigger the creation of entirely new fat cells everywhere, including under the chin. Even then, treated areas tend to accumulate less fat than untreated ones, so most patients who gain weight still look better than they would have without the procedure.
Submental Lipo vs. Injectable Fat Dissolvers
The main non-surgical alternative is an injectable treatment that uses a synthetic version of a bile acid to destroy fat cells (sold under the brand name Kybella). The two approaches differ in speed, sessions, and downtime.
- Number of treatments: Liposuction requires one session. Kybella requires two to six sessions spaced about a month apart.
- Results timeline: Liposuction produces visible changes within days, with refinement over several weeks. Kybella results develop gradually over several months.
- Downtime: Liposuction involves a few days of recovery plus compression garment use. Kybella has minimal procedural downtime, but swelling can last several days after each session.
- Best for: Liposuction suits moderate to large fat deposits and delivers dramatic, immediate results. Kybella works well for smaller amounts of fat in patients who prefer to avoid surgery entirely.
Both permanently destroy fat cells. The choice often comes down to how much fat you want removed, how quickly you want to see results, and your comfort level with a surgical procedure.
Submental Lipo vs. a Neck Lift
Submental liposuction addresses fat under the chin without removing skin. A neck lift (platysmaplasty) is a more comprehensive surgery that targets loose skin, visible muscle banding, and fat deposits across the entire neck. If your primary concern is fullness under the chin with good skin tone, liposuction alone is usually sufficient. If you have noticeable neck bands, significant skin laxity, or sagging that extends beyond the chin area, a neck lift provides a more complete correction. Some surgeons combine the two, using liposuction to remove fat and a neck lift to tighten the underlying muscle and trim excess skin.
Cost
The average surgeon’s fee for liposuction is $4,711 according to the American Society of Plastic Surgeons, but submental lipo as an isolated procedure on a small area typically costs less than full-body liposuction. The surgeon’s fee is only one component of the total bill. Anesthesia charges, facility fees, compression garments, and any prescriptions add to the final number. Geographic location and surgeon experience also influence pricing significantly. Because submental lipo is cosmetic, insurance does not cover it.