Jawline slimming Botox in Austin relaxes the masseter, the muscle that powers your bite, to soften a wide or square jaw. Over a few weeks the muscle shrinks a little, and the lower face looks slimmer and more balanced. It can also ease jaw clenching and TMJ tension. Every treatment is done by a licensed nurse, pricing starts at $12 per unit, and you can begin with a free virtual consultation.
Genniel, RN
InjectCo Austin is inside BirthCo on the Burnet Road corridor in North Austin, near Crestview and Brentwood. You can browse the full menu of Austin med spa services and ask about jaw slimming during your visit. Genniel, our clinical aesthetic nurse injector, will explain the units, timeline, and natural results you can expect.


Your treatment is placed by Genniel, RN, a Clinical Aesthetic Nurse Injector at InjectCo Austin. She reads the shape of your face and the strength of your jaw muscle, then doses to slim gradually while keeping your smile and expressions natural. She takes time to explain the timeline first because masseter results build over weeks.
Your nurse injector at InjectCo will tell you whether your goal is mostly cosmetic slimming, clench relief, or both, and dose accordingly.
Your masseter is the muscle you feel flexing when you clench your teeth. When a muscle is used every day, from chewing, clenching, or grinding, it can grow larger and widen the jaw. Botox relaxes that muscle so it works less, and over several weeks a less-used muscle gets a little smaller. As it shrinks, the jaw looks softer and slimmer.
Slimming is gradual. Many patients start to feel less clenching within a week or two, but the visible slimming builds over about four to eight weeks and can keep improving with repeat treatments. Results commonly last around three to four months at first, and often longer once you have had a few rounds, as the muscle stays smaller when it is treated regularly.
Pricing starts at $12 per unit. The masseter is a large muscle, so jawline slimming usually uses more units than a small wrinkle area, which is normal for this treatment.
Masseter treatment commonly uses about 20 to 30 units per side, so both sides together often land around 40 to 60 units total, though your exact plan is set at your consultation. For instance, 50 units at $12 per unit is about $600 for the pair. You can estimate your own cost with InjectCo’s Instant Price Simulator. Prices are subject to change, and your nurse confirms your units and total before treatment.
Jaw slimming pairs well with other small touches when your goal is overall balance. Some patients add a little chin filler to lengthen and define the chin, which can make a slimmer jaw look even more tapered from the side. Others combine masseter Botox with a light treatment along the neck or a lip flip for a refreshed lower third.
These are possible additional treatments. Jaw slimming works on its own, and many patients treat only the masseter. Your nurse can show you what a balanced plan might look like, with no pressure to add anything you do not want.
InjectCo MedSpa Fort Worth is located inside Mattison Ave Suites at 4701 West Fwy Suite 152, in the Chapel Hill Shopping Center at the corner of Hulen Street and I-30. We are in the same center as Central Market and World Market, which makes the clinic easy to find for patients across West Fort Worth.
We are right in the heart of West Fort Worth, just minutes from Dickies Arena and the Cultural District. For most patients the drive is shorter than they expect, with quick access from I-30, I-820, and Chisholm Trail Parkway.
INSIDE BIRTHCO,
8312 Burnet Rd #107,
Austin, TX 78757, United States

Mon to Sun, 8:00 AM to 8:00 PM
Yes. Botox relaxes the masseter, the muscle that widens the jaw when it is overused from chewing or clenching. As the muscle works less, it gradually gets a little smaller, and the jaw looks slimmer and softer from the front and the side. The change is gradual and builds over several weeks, so it looks natural rather than sudden.
Masseter treatment commonly uses somewhere around 20 to 30 units per side, so both sides together often land around 40 to 60 units, depending on how strong your jaw muscle is. A stronger, more built-up muscle usually needs a bit more. Your nurse checks your muscle by having you clench, then confirms your unit plan at your consultation.
Pricing starts at $12 per unit. Because the masseter is a large muscle, jaw slimming often uses around 40 to 60 units total, so a common treatment lands near $600, though your exact cost depends on your muscle and is set at your consultation. You can estimate your total with our online price tool before you come in.
Yes, for many patients. When the masseter relaxes, it clenches and grinds less, which often eases jaw soreness and TMJ tension, and some people notice fewer tension headaches. Many patients come in for the clench relief and enjoy the slimming as a bonus. Your nurse can dose with either goal, or both, in mind.
Results commonly last about three to four months at first. With repeat treatments, many patients find the effect lasts longer, because the muscle stays smaller when it is treated on a regular schedule. When you notice the muscle getting stronger again, you simply book another round.
When it is dosed and placed correctly by a trained injector, masseter Botox is designed to slim the muscle without causing sagging. Poor placement or too high a dose is what raises that risk, which is exactly why a skilled, licensed injector matters. At InjectCo Austin, your nurse places the dose low and precisely to slim safely, and will explain your plan first.
It should not change your smile when it is placed correctly, because the injection sits low in the jaw muscle, away from the muscles that move your mouth. Your nurse maps the area carefully to keep your expressions natural. If you have concerns, bring them to your consultation and your nurse will walk you through exactly where the dose goes.
Tell your injector about every medication and supplement you take at your consultation, including blood thinners and anything that affects your muscles or nerves. Your nurse reviews your full health history and gives you personalized guidance, since this is a medical decision that depends on you. This is general information and not individual medical advice, so your consult is the place to sort out the details.
Botox has a long track record when it is placed by a trained, licensed injector, and masseter treatment is a common, well-understood use. At InjectCo Austin, every treatment is nurse-led, and your nurse reviews your health history first to make sure you are a good candidate. Your nurse will also explain how any rare side effects are handled, so you know what to expect.
InjectCo Austin is inside BirthCo at 8312 Burnet Rd #107, Austin, TX 78757, on the Burnet Road corridor in North Austin near Crestview and Brentwood. We are easy to reach from US-183 and Mopac, and we serve Round Rock, Cedar Park, Pflugerville, Georgetown, and nearby areas. Call or text (512) 737-7360 to book your free consultation.
Start with a free virtual consultation, meet your nurse, and get a clear treatment plan for a softer, slimmer jaw and less clenching. We will tell you honestly if you are a good candidate.
Prefer to call or text? Reach us at (512) 737-7360.
Disclaimer: Individual results vary. Masseter Botox is a prescription treatment and requires a consultation to determine if you are a candidate. Prices are subject to change, and your final cost is set at your consultation. This page is general information, not medical advice.

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