Can Ulthera slim the jawline, and when is it fat, gland or muscle?
Sometimes. Ulthera can tighten mild sagging along the jawline and, by heating the fat layer, can make a modest difference to a soft, full lower face. It cannot shrink a bulky chewing muscle, a prominent salivary gland or the jawbone, so the first step is to find out which of these makes the jawline look wide or heavy, and to plan for that cause.
Two people can describe the same wish, a slimmer, cleaner jawline, and need quite different treatment. This article explains how the causes differ, what Ulthera can and cannot change, and what else may be needed.
The same wish, different tissue
Dr. Kim writes that among people who want a slimmer jawline, some need the deeper supporting layer (SMAS) lifted, while for others reducing the fat layer works better, and that the size of the salivary glands and the amount of muscle also have to be considered in the design. Seeing these structures on the ultrasound image, rather than assuming them, is what he regards as the main advantage of Ulthera over other focused-ultrasound devices.
What can make a jawline look wide or heavy
| Cause | Typical clues | Can Ulthera help? | Other options |
|---|---|---|---|
| Early sagging (laxity) | Soft tissue starting to drop below the jaw edge; the line blurs, especially in front of the jowl | Often, for mild to moderate laxity | Surgery when sagging is marked |
| Fat | Soft fullness along the jowl or under the chin that can be pinched | A modest reduction is possible | Liposuction for larger amounts |
| Chewing muscle (masseter) | Width at the angle of the jaw that firms up when you clench | No | Muscle-relaxing injections (botulinum toxin) |
| Salivary gland | A firm fullness in front of the ear or under the jaw that does not change with clenching | No | Assessment first; often planned around rather than treated |
| Bone shape | A wide or square jaw seen even in a lean face | No | Not changed by any device |
More than one cause is common. A person in their forties may have some laxity, some fat and a strong chewing muscle at once.
When the cause is sagging
As the face ages, the supporting layer and the ligaments that hold soft tissue to the bone loosen, and tissue moves down. Along the jaw this blurs the line and starts to form a jowl. This is where Ulthera is most useful: energy at the 4.5 mm depth aims at the SMAS to tighten it, and the shallower depths firm the skin. The change is modest and builds over two to three months.
When the cause is fat
Ulthera is not a fat-removal treatment, but Dr. Kim writes that energy delivered into the fat layer has a volume-control effect. For a soft, full jowl or a little fullness under the chin, this can contribute to a neater line. The effect is limited and varies between people.
When there is a larger amount of fat, a device is unlikely to change it enough, and liposuction is usually more effective. Removing fat around the jaw can also make other structures, such as a salivary gland, more visible, which is one reason they are assessed first.
When the cause is muscle
The masseter is the strong chewing muscle at the angle of the jaw. When it is large, the lower face looks wide even if there is little fat or sagging. You can often feel it harden when you clench your teeth. Ulthera does not shrink muscle. The usual non-surgical option is a muscle-relaxing injection (botulinum toxin), which reduces the bulk over weeks. When muscle bulk is part of the picture, the Ulthera plan accounts for it rather than adding more energy over it.
When the cause is a gland
Two pairs of salivary glands can affect the jawline. The parotid gland sits in front of and below the ear; the submandibular gland sits under the jaw and can become more noticeable with age as the tissue around it loosens. A prominent gland feels firmer than fat and does not change with clenching. No device reliably shrinks a gland, and heat is not aimed at it. The ultrasound image helps show where the gland lies so that the plan works around it.
When the cause is bone
Some jaws are wide or square because of their bone shape. A device does not change bone. In that case the honest answer is that Ulthera may firm the soft tissue but will not narrow the face.
When more than one treatment is needed
Because causes overlap, a jawline plan sometimes combines treatments, each aimed at its own layer: Ulthera for laxity in the supporting layer, a muscle-relaxing injection for a bulky masseter, and volume support such as Sculptra for a hollow just in front of the jowl, which can make the jowl look heavier than it is. The order and spacing are planned so that swelling from one treatment does not distort the assessment for the next. Not everyone needs more than one, and the simplest plan that matches the cause is usually the right starting point.
How the cause is worked out
- Looking: where the fullness sits, and how it changes when you look down or smile.
- Palpation: feeling the tissue by hand, pinching fat, feeling the muscle as you clench, feeling the firmer texture of a gland and the edge of the bone.
- The ultrasound image: the Ulthera screen shows the thickness of skin and fat, the supporting layer and the muscle under the transducer. Ultherapy PRIME shows down to about 8 mm, which helps where the deeper structures matter.
Dr. Kim shows patients the same screen during treatment and explains why a particular spot bulges because of where the fat sits, so the reason for each step is visible.
How many shots for the jawline?
Asked how many shots are needed, Dr. Kim answers in his answers to patients that around 100 shots can treat a small area, and that around 300 is a common recommendation when the jaw and cheeks carry more fat, but that the number is set only after assessing the amount of fat and the shape the patient wants. How the shots are distributed by area and depth matters more than the total; see Does a higher Ulthera shot count mean a better result?
Risks specific to the jawline
- Tenderness along the jaw: common, and can last days to a few weeks.
- Nerve irritation: the nerve branch that moves the lower lip runs near the jaw edge. Rarely, temporary weakness causes an uneven smile, usually recovering over weeks to months. Energy near this zone is placed with care.
- A leaner look than wanted: in a face that is already slim, too much energy in the fat layer could take away volume that helps it look youthful. See Can Ulthera make the face look hollow?
- Redness, swelling, bruising and temporary raised lines, as with any Ulthera treatment.
Who Ulthera is unlikely to satisfy
- Clearly hanging jowls or loose neck skin: a mini facelift or facelift is usually more effective. Read Mini facelift or full facelift to compare.
- Width that comes mainly from muscle, gland or bone.
- A large amount of fat under the chin or along the jaw, where liposuction is more likely to help.
- Expecting a surgical result from a device.
Dr. Kim trained in facial surgery and will say when surgery would serve you better, although he does not perform surgery at Violacell. See When is non-surgical lifting not enough?
Why it matters who plans it
A jawline plan built on the wrong cause spends energy where it cannot help. Dr. Kim learned the anatomy of this area, the SMAS, the ligaments, the fat compartments, the glands and the nerve to the lower lip, in plastic surgery training at Chonnam National University, where he later served as a clinical professor. He designs Ulthera from the ultrasound image and palpation, distributes shots by area and depth, and starts from the layer that has changed rather than from the device. Why Dr. Kim for Ulthera
Common questions
Can Ulthera make my face look slimmer?
It can tighten mild sagging and make a modest difference to soft fat along the jawline, which may make the lower face look neater. It does not shrink muscle, glands or bone, so it will not narrow a face whose width comes from those.
How do I know if my wide jaw is muscle or fat?
Clench your teeth and feel the angle of your jaw. If it hardens, muscle is likely a large part. Fat feels soft and can be pinched. An examination by hand and the ultrasound image give a clearer answer.
Will Ulthera help a double chin?
For mild laxity and a small amount of fat under the chin, it can help modestly; lifting tissue under the chin is one of its FDA-cleared uses. A larger amount of fat usually responds better to liposuction.
How many Ulthera shots does the jawline need?
It depends on the diagnosis. Dr. Kim says around 100 shots can treat a small area and around 300 is common when the jaw and cheeks carry more fat, but the number is set after examining the face.
Related pages: Ulthera · Dr. Kim on Ulthera · Ulthera's three depths · Liposuction · Mini facelift · Why Dr. Kim