Published Jul 24, 2026
10 minute read
A defined jawline depends on several factors. Some people naturally have a smaller chin or softer jaw, while others have extra fullness under the chin that hides their bone structure. As we age, the jawline can also become less distinct as the cheeks drop and the skin around the neck loosens.
There are several ways to approach jawline contouring. Some people need more chin projection, while others have a strong jaw that is just hidden by fat under the chin. If aging has blurred the jawline, lifting the face or neck may be better than adding filler. Sometimes the jawline needs to be enhanced, and other times it just needs to be revealed.
At Coastline Plastic Surgery in Newport Beach, Dr. Brandyn Dunn begins by finding out what is causing the softer jawline. Whether it’s dermal fillers, Botox, chin liposuction, or facial surgery, these five options can each help you achieve a more defined profile.
Many parts of the face shape your overall look. The jawbone is the foundation, and the chin sets the end of your profile. Fat, muscles, skin, and the neck’s shape all affect how visible that foundation is.
Genetics play a big role in your facial structure and where fat is stored. A receding chin can make the lower face look shorter, and the area under it look fuller. Stubborn fat under the chin can hide a strong jaw. From the front, the width of the masseter muscle at the back corners of the jaw can also change your face shape.
The neck also plays a big part. Extra fat, loose skin, or visible neck bands can soften the angle under the jaw. As we age, lower collagen, looser skin, and sagging cheeks can cause jowls. Treating the right layer helps improve the contour without making the lower face look heavy or unnatural.
Patients often say they want a jawline that looks “sharp,” “defined,” or “sculpted,” but these words can mean different things for each person.
Someone with a weak jawline or a recessed chin may want a stronger profile. Another person with large masseter muscles may want a slimmer lower face from the front. Some people have jowls that interrupt an otherwise well-proportioned chin and jawbone.
The side view highlights chin projection and how the chin transitions into the neck. The front view shows width, symmetry, and any jowling. Dr. Dunn considers both views when planning jawline contouring, always keeping your natural angles and features in mind.
The goal is to create results that fit each person’s unique face, not to give everyone the same chiseled jawline.
Dermal fillers offer a non-surgical way to add definition to selected parts of the chin and jaw. A carefully placed filler may bring the chin forward, strengthen the back corner of the jaw, or smooth an area where the jawline looks uneven.
Filling the whole jawline can add a lot of volume and make the lower face look wider. Dr. Dunn adds support only where it helps facial balance and avoids areas where extra volume would not match your goals.
Jawline fillers usually work best for small changes in people with good skin quality. They can also help you see how more chin projection might look before you decide on a chin implant.
At Coastline Plastic Surgery, dermal fillers can be used for jawline contouring and non-surgical chin augmentation. Many jawline fillers are made with hyaluronic acid, which adds temporary volume and can usually be dissolved when appropriate. Results appear quickly, although swelling may temporarily broaden the jawline area. Depending on the product, placement, and individual metabolism, results can last around six to 18 months.
Fillers have their limits. They can’t remove a double chin or tighten loose skin. If jowls or sagging skin are covering the jaw, adding more volume might just make the lower face look fuller instead of more defined.
Clench your teeth and place your fingers near the back corners of your jaw. The muscle you feel tightening is the masseter. It does a lot of work every day, and in some people it becomes large enough to give the lower face a wide or square shape.
Botox or similar treatments can temporarily relax the masseter muscle. As the muscle relaxes and gets a bit smaller, the lower face can look slimmer. This non-surgical option usually makes more of a difference from the front than from the side.
The change develops over several weeks, and maintenance treatments are usually needed as muscle activity returns. Masseter Botox is commonly performed for facial slimming, although this cosmetic use is off-label under current FDA labeling for Botox Cosmetic.
It’s important to be careful with this treatment. The masseter muscle helps with chewing and supports the lower face. Weakening it too much can affect chewing, change your smile, or make a sagging jawline more noticeable. Dr. Dunn tailors the treatment to your muscle size and facial structure, rather than just aiming for the narrowest jaw.
Clenching and grinding your teeth can also cause jaw pain, headaches, or issues with the jaw joint. Cosmetic treatments like neuromodulators are not a substitute for dental or medical care for these problems, and they can’t prevent neck pain or fix bite issues.
Some people already have a good jawline, but it’s hidden by fat under the chin. This extra fullness can happen even if you’re at a healthy weight. Genetics often decide where your body stores fat, so losing more weight may not change the area under the chin.
Chin liposuction, also called submental liposuction or neck liposuction, removes selected fat cells from beneath the chin and along the upper neck. Dr. Dunn uses a thin cannula through a small incision under the chin to reduce excess fat and reveal the patient’s natural facial contours.
After fat is removed, the skin needs to tighten around the new shape. If your skin is firm, liposuction alone may work well. If you have loose skin or neck bands, a neck lift might be needed.
Swelling and bruising are normal during the first part of recovery, and you may need to wear a compression garment while your jawline heals. Most people start to see a difference as swelling goes down, and the contour keeps improving over the next few weeks and months.
The fat cells that are removed won’t come back, but the ones that remain can still get bigger if you gain weight. Staying at a healthy weight helps keep your results.
It’s easy to overlook the chin when thinking about jaw contouring. From the side, though, the chin anchors the lower face. A receding chin can make the jaw look shorter and the neck look fuller, even if there isn’t much fat under the chin.
A chin implant adds shape and projection over the existing chin bone. Implants come in different sizes and designs, allowing Dr. Dunn to choose one that fits the width and proportions of the face. This form of surgical chin augmentation can create a lasting structural improvement for a weak chin and a more balanced facial profile.
Dr. Dunn looks at how the chin relates to the nose, lips, jaw, and neck to make sure the new shape fits your face. Too much projection can overwhelm your features, while too little may not make a noticeable difference.
Fillers are good for small, temporary changes with little downtime. A chin implant is better if you want a longer-lasting result or need more projection.
At first, swelling can make the chin look bigger than expected, but the shape becomes more natural as you heal. Chin implants can also be combined with chin liposuction if you need both more projection and fat removal.
If your jawline has softened with age, it needs a different approach than a jawline that was never defined. The bone may still be strong, but sagging skin and jowls can cover it. Loose neck skin or visible muscle bands can also weaken the angle under the chin.
Fillers can help with small areas of volume loss, and liposuction can remove fat, but neither can lift tissue that has sagged. When deeper support has loosened, surgery is often needed to address the real cause of the change.
A facelift moves tissue in the lower face and reduces jowls that break up the jawline. Both full and mini facelifts can lift and tighten sagging skin, depending on how much correction you need. Dr. Dunn uses deep plane techniques to restore support under the skin without pulling it too tight.
A neck lift targets the area below the jaw. Depending on your anatomy, it can address loose skin, extra fat, muscle bands, or deeper fullness. This procedure tightens loose skin and creates a smoother transition between the jaw and neck.
The face and neck are always evaluated together. Some people need just one procedure, while others benefit from both a facelift and neck lift. Recovery times vary, but swelling and bruising fade as your results improve over the next few months.
Buccal fat removal targets fullness in the lower cheeks, not the jaw. For the right patient, removing some buccal fat can highlight the cheekbones and create a slimmer look where the cheeks meet the jaw.
This procedure won’t fix a double chin, receding chin, or sagging jawline. Since facial fat decreases with age, removing too much from a thin face can cause hollowness later. Dr. Dunn always considers your current facial shape and how it might change over time before recommending buccal fat removal.
Dr. Dunn’s Facial Slimming Trio combines buccal fat removal, chin liposuction, and masseter neuromodulator treatment. Each step has its own purpose: reducing fullness in the lower cheeks, removing fat under the chin, and narrowing the jaw muscles. Some people need all three, while others only need one or two parts of the plan.
Most people don’t fit neatly into just one treatment option. For example, a chin implant can improve the profile while chin liposuction removes fat underneath. Masseter Botox can slim the lower face, and a little filler can add definition where needed. A facelift and neck lift can be combined if jowls and loose neck skin are both concerns.
Some procedures can be done at the same time, while others may be spaced out so you can heal before deciding on the next step. Dr. Dunn considers what each part of the plan will add and skips anything that won’t help your facial balance.
Dr. Dunn is a double board-certified facial plastic and reconstructive surgeon who specializes in the face and neck. During your jawline evaluation at Coastline Plastic Surgery in Newport Beach, he will look at chin projection, jaw width, fat distribution, skin quality, muscle size, jowling, and neck shape. He also reviews your previous treatments, weight changes, medical history, and any jaw-related concerns.
A good jawline contouring plan should feel simple once your anatomy is understood. Add structure where it’s missing, remove fullness that hides the jaw, and restore support where tissues have loosened. When the treatment matches your face, the result looks sharper, more balanced, and still completely natural.
