Jawline fat, often called a “double chin,” is one of the most stubborn areas to slim down because you can’t target fat loss to one specific spot on your body. Reducing it comes down to a combination of overall fat loss, and in some cases, cosmetic procedures designed specifically for the area under the chin. The approach that works best depends on how much fat is there, your skin elasticity, and whether genetics or overall body weight is the primary driver.
Why Fat Accumulates Under the Chin
Fat storage beneath the chin and along the neck is strongly tied to overall body weight. In clinical research, the amount of chin fat correlated directly with BMI, meaning people with higher body fat percentages consistently carried more fat in this area. But BMI isn’t the whole story. Chin fat also correlates with markers of deeper metabolic activity, including insulin resistance and higher blood pressure, suggesting it may behave similarly to visceral fat stored around your organs rather than simple surface-level padding.
Genetics play a significant role too. Some people develop a double chin at a relatively normal weight because their body is predisposed to store fat in the submental region (the area directly below the jaw). Age compounds this: as skin loses elasticity and facial muscles weaken over time, even a small amount of fat beneath the chin becomes more visible. Hormonal factors matter as well. Excessive cortisol exposure, as seen in Cushing’s syndrome, causes pronounced fat accumulation in the face and neck, a pattern sometimes described as “moon face.” While most people don’t have Cushing’s, chronic stress and elevated cortisol can nudge fat storage in the same direction on a smaller scale.
Spot Reduction Is a Myth
No exercise, device, or diet can pull fat exclusively from your jawline. Fat loss is a whole-body process. When your body needs energy, hormones like epinephrine signal fat cells to release stored fatty acids into the bloodstream. Those fatty acids travel through the blood, bound to a carrier protein called albumin, and get delivered to muscles throughout the body for fuel. The key point: your body decides which fat cells to tap based on genetics and hormonal signals, not based on which muscles you’re working. Doing chin tucks or jaw exercises won’t burn the fat sitting beneath your chin any more than doing crunches burns belly fat.
This means the most reliable way to reduce jawline fat without a procedure is to reduce your overall body fat percentage through a sustained calorie deficit, whether from dietary changes, increased physical activity, or both. As total body fat drops, the face and chin typically slim down too. Many people actually notice facial changes relatively early in a weight loss journey because the face carries a thinner layer of fat compared to the torso.
Do Facial Exercises Help?
Facial exercises and “face yoga” are widely promoted for jawline definition, but the evidence is thin. A 2025 clinical trial tested an intensive face yoga program on middle-aged women and found that certain muscles beneath the chin, particularly the digastric muscle, did gain tone, stiffness, and elasticity after the program. The researchers suggested this could make the jawline appear more prominent over time. However, the study involved only 12 participants and had no control group, making the findings very preliminary.
There’s an important distinction here: facial exercises may modestly improve muscle tone and skin tightness, which can create the appearance of a more defined jaw. But they do not burn submental fat. If the primary issue is excess fat rather than loose skin or weak muscle tone, exercises alone won’t solve it.
Mewing Doesn’t Work
Mewing, the practice of pressing your tongue against the roof of your mouth to supposedly reshape the jawline, has no scientific support. Cleveland Clinic experts have stated plainly that mewing isn’t specific or strong enough to change dental or facial features. In younger people, it can actually cause tooth misalignment. If you want structural changes to your jawline, mewing won’t deliver them.
Weight Loss That Reaches the Chin
Since chin fat tracks closely with overall body fat, a sustained calorie deficit is the most effective non-procedural approach. You don’t need a specific “jawline diet.” Any pattern of eating that keeps you in a moderate deficit of 300 to 500 calories per day will gradually reduce fat across your body, including the face and neck.
One factor worth paying attention to is water retention, which can make the jawline look puffier than the actual fat underneath it. The common belief is that high sodium intake causes facial bloating, but research from the American Physiological Society found that in healthy adults, high salt consumption doesn’t actually increase total body water. Instead, it shifts fluid from the space between cells into the bloodstream. That said, if you’re eating a highly processed diet with inconsistent sodium levels, the fluctuations can cause temporary puffiness. Keeping your sodium intake relatively steady, staying well hydrated, and limiting alcohol are simple ways to minimize day-to-day facial bloating that obscures your jawline.
Adequate sleep matters too. Poor sleep raises cortisol, and as noted earlier, cortisol promotes fat storage in the face and neck specifically. Consistently sleeping seven to nine hours won’t melt chin fat on its own, but it removes one hormonal factor working against you.
Injectable Fat Reduction
For people who have a double chin despite being at or near a healthy weight, injectable deoxycholic acid (sold as Kybella in the U.S.) is an FDA-approved option. The drug is a synthetic version of a bile acid your body naturally produces to break down dietary fat. When injected into the submental area, it destroys fat cells permanently.
Results aren’t instant. In clinical trials, 52% of patients saw a meaningful improvement after two sessions, and 72% reached that point after four sessions. In private practice settings, most patients (about 61%) needed two treatment sessions, while roughly a quarter needed three. Each session is spaced about a month apart, so the full treatment timeline typically runs two to six months. A real-world study of 100 consecutive patients found that over 90% achieved at least a one-grade improvement in chin fullness, even with a single session. Swelling, firmness, and numbness beneath the chin are common for a week or two after each treatment.
CoolSculpting for the Chin
Cryolipolysis, marketed as CoolSculpting, uses controlled cooling to freeze and kill fat cells beneath the skin. Clinical studies have shown it reduces the fat layer by up to 25% after a single treatment, with results appearing gradually over two to six months as the body clears the dead cells. A study tracking subjects over six months found a 20% reduction at two months and about 25.5% at six months. It’s non-invasive, requires no needles or incisions, and has minimal downtime. The trade-off is that the results are more modest than injections or surgery, so it works best for mild to moderate chin fullness.
Surgical Options
When fat deposits are more significant, or when loose skin is part of the problem, surgical procedures offer the most dramatic results.
Chin liposuction works well for people who have good skin elasticity and decent muscle tone but carry a stubborn pocket of fat beneath the jaw. If your skin bounces back when you pinch it and the main issue is fullness rather than sagging, liposuction is typically the recommended route. Recovery follows a predictable pattern: peak swelling in the first 48 hours, swelling reduced by about half within the first week, and jawline contours becoming clearly visible by weeks two through four. Most patients feel comfortable being seen in public after about a week. You’ll wear a compression garment around the clock for the first week, then just at night for a few more weeks. About 92% of patients see their full results by the three-month mark, with final refined results at six months.
A submental neck lift is the better choice when loose or sagging skin is a significant factor, when muscle tone beneath the chin is poor, or when a receding chin contributes to the appearance of jawline fullness. This is a more involved surgery with a longer recovery, but it addresses both fat and skin laxity in a way that liposuction alone cannot. Candidates need to be in generally good health with no serious pre-existing conditions.
Choosing the Right Approach
Your starting point determines the most effective path. If you’re carrying extra body weight, overall fat loss through diet and exercise is the logical first step and may be all you need. Many people are surprised by how much their jawline sharpens after losing 10 to 15 pounds of total body fat. If you’re already at a healthy weight and the double chin persists, that points toward genetics, and non-surgical or surgical options become more relevant. Younger patients with good skin elasticity often do well with injectables or cryolipolysis. Older patients, or those with noticeable skin laxity, generally get better results from liposuction or a neck lift that addresses both fat and skin in a single procedure.