Masseter Botox is a neuromodulator treatment placed in the masseter, the thick chewing muscle at the angle of the jaw. It is the treatment patients ask for when they clench or grind, wake up with a sore jaw, or want a slimmer lower face. Botox or Dysport in Austin relaxes the muscle, which eases TMJ tension within about a week and gradually softens a square jawline over the following two months.
Quick answer: At Banyan & Bamboo on South Lamar (78704), masseter treatment runs about $550 to $825 with Dysport or $725 to $1,450 with Botox, depending on muscle size. Brittany Cantu, AME, our lead injector with 21+ years of experience, assesses both sides and places the units. Relief from clenching starts in about a week, slimming shows at 4 to 8 weeks, and results last 3 to 4 months at first and longer with repeat treatment. TMJ treatment is typically HSA and FSA eligible.
What Is Masseter Botox?
The masseter runs from the cheekbone down to the angle of the jaw. It is one of the strongest muscles in the body for its size. In people who clench or grind it gets bigger and firmer over time, the same way any muscle grows with a workout. That growth is what widens the lower face and what keeps the jaw sore.
Botox and Dysport are both botulinum toxin type A. Placed in the masseter, they block the nerve signal that tells the muscle to contract at full force. You keep every function you need for talking, chewing, and smiling. The muscle simply stops working overtime. With less activity, it relaxes first and then shrinks, which is why the treatment addresses both the pain and the shape of the jaw.
You will also see this called jaw Botox, masseter tox, or Botox for TMJ. They all describe the same procedure. The medical version is covered in more depth on our medical Botox page, which also covers migraines, hyperhidrosis, and Trap Tox.
Masseter Botox for TMJ, Jaw Clenching, and Teeth Grinding
Most of the masseter patients we see come in for function first. The pattern is familiar: a tight jaw in the morning, headaches that start at the temples, and a click or ache at the joint in front of the ear. Often a dentist has already mentioned worn enamel or cracked molars. Night guards protect the teeth, but they do nothing about the force the muscle is generating.
Masseter Botox reduces that force. Patients usually notice they are clenching less within 5 to 7 days. The jaw feels lighter, morning soreness eases, and tension headaches that came from the jaw become less frequent. Because the muscle is producing less load, the joint itself gets a rest. That is why many patients with TMJ disorder describe relief at the joint as well as in the muscle.
Botox for bruxism does not replace a night guard for someone who has already damaged their teeth, but it does reduce the grinding that caused the damage. If you are unsure whether your pain is muscular or joint-related, tell us at your assessment. Muscular pain responds well to this treatment; a structural joint problem needs a dentist or oral surgeon in the plan too.
Masseter Botox for Jaw Slimming
The second group of patients want a change in shape. A wide or square lower face is often masseter bulk rather than bone, and a simple test tells the difference. Clench your back teeth and feel the angle of your jaw. If a firm bulge rises under your fingers, that is muscle, and it can be reduced.
As the treated muscle shrinks, the lower face tapers and the cheekbones read as more prominent. The change is gradual. There is no swelling phase and no downtime, just a face that looks slimmer in photos six to eight weeks later. This is the same treatment searched as face slimming Botox or jawline Botox, and it suits men as well as women. On our men's injectables page we cover how dosing is calibrated to keep a masculine jawline while easing clenching.
Slimming is dose-dependent. A patient who wants relief but likes the width of their jaw gets a lighter dose. A patient who wants visible tapering gets a fuller dose across both sides. Brittany Cantu maps this at the assessment so you get the outcome you asked for.
How Many Units of Botox for Masseter?
Masseter dosing is higher than any cosmetic area on the upper face because the muscle is so much larger. Typical ranges at our practice:
- Botox: 25 to 50 units per side, or 50 to 100 units total.
- Dysport: 100 to 150 units total across both sides. Dysport units are measured differently, so roughly 2.5 Dysport units do the work of 1 Botox unit.
Where you land in the range depends on muscle size and strength, how hard you clench, and whether your goal is relief or slimming. First visits and maintenance visits are dosed differently too. Repeat patients often need fewer units because the muscle has already reduced. Both sides are treated together, even if one side feels tighter, so the jaw stays symmetrical.
How Much Is Masseter Botox in Austin?
We price per unit, so you pay for exactly what is placed. Our Botox cost guide explains why per-unit pricing is the transparent model. Current pricing:
| Product | Per unit | Typical masseter dose | Typical cost |
|---|---|---|---|
| Dysport | $5.50 | 100 to 150 units | $550 to $825 |
| Botox | $14.50 | 50 to 100 units | $725 to $1,450 |
New injectable patients receive a $75 credit toward their first treatment. Texas requires a good-faith exam before your first injectable treatment each year, which is a $35 charge. Banyan Luxe members receive their tier discount on injectables. If you would like to spread the cost, PatientFi payment plans offer monthly payments with no hard credit check.
For TMJ, clenching, and grinding, the treatment is typically an eligible medical expense. You can pay with your HSA or FSA card at checkout and we provide an itemized receipt. Cosmetic slimming is paid out of pocket.
How Long Does Masseter Botox Take to Work?
Relief comes first. Most patients feel less clenching within 5 to 7 days, with the full functional effect at about two weeks. Slimming takes longer because the muscle has to lose bulk after it relaxes. Expect a visible change at 4 weeks and the full result at 6 to 8 weeks. We schedule a two-week check for anyone who wants their dose reviewed.
How Long Does Masseter Botox Last?
A first treatment typically lasts 3 to 4 months. With repeat treatment the muscle stays smaller between visits, so many patients extend the interval to 4 to 6 months. Some find their clenching habit eases enough that they need fewer units each time. Patients who prefer the fewest visits per year can ask about Daxxify, a longer-lasting neuromodulator we also carry. The masseter is a large muscle, so Daxxify dosing is discussed case by case.
Masseter Botox Before and After: What Actually Changes
Patients searching for masseter Botox before and after photos are usually trying to answer one question: will it be obvious? The honest answer is that the change is noticeable to you and subtle to everyone else. Here is what you can expect to see and feel across the first two months.
- Week 1: the jaw feels lighter, clenching eases, and morning soreness drops. The face looks the same.
- Weeks 2 to 4: chewing tough foods takes a little more effort at first, then normalizes. Early tapering shows at the jaw angle.
- Weeks 6 to 8: the full slimming result. The lower face is narrower, the jawline reads as more defined, and clenching is minimal.
The photos in this article show treatment day. Take your own from the front and from each side before your first appointment so you can compare at eight weeks instead of relying on memory. You can see examples of her injectable work on her profile and read what patients say on our reviews page.
Does Masseter Botox Cause Jowls?
This is a fair question and the answer depends on the patient. Masseter Botox reduces the bulk of the muscle. In a patient whose skin along the jaw already has some laxity, less muscle underneath can make that laxity easier to see, which reads as early jowling. In a patient with firm skin it does not happen.
This is the reason we assess skin quality and the lower face before dosing. Where the skin is softer we start with a lighter dose and build over two visits. Where structure is the real concern we pair the treatment with Sculptra or jawline filler so the jaw keeps its support as the muscle reduces. A full facial balancing plan covers all of this in one assessment.
Masseter Botox Side Effects and Aftercare
Side effects are mild and short-lived. Small injection marks fade within the hour. Bruising is uncommon but possible. For the first week or two some patients notice that chewing steak or gum takes more effort, which settles as the muscle adapts. Rarely, a patient sees a slight change in their smile if product spreads toward the muscles that lift the cheek, which resolves as the product wears off. Careful placement and conservative dosing on the first visit keep this rare.
Aftercare is simple. Eat and drink normally. For about four hours, avoid lying flat, hard exercise, and massaging or pressing on the jaw. Our first appointment guide covers what to do the week before and the day of.
Botox or Dysport for the Masseter?
Both work well in this muscle. Dysport spreads slightly wider from each injection point, which suits a large muscle like the masseter, and its per-unit price makes the treatment more affordable. Botox stays closer to where it is placed, which some injectors prefer for very precise dosing. Dysport is the product we use most across the practice, and Brittany Cantu will recommend the product that fits your anatomy and budget. The full comparison is in our Dysport vs Botox guide.
Frequently Asked Questions About Masseter Botox
Does masseter Botox hurt?
Most patients describe a brief pinch on each side. The masseter is a thick muscle, so the injector uses a few small injections per side rather than one deep one. Topical numbing is available if you want it, and the injections take a few minutes.
Can I eat after masseter Botox?
Yes. You can eat and drink normally right away. For about four hours, avoid lying flat, hard exercise, and massaging or pressing on the jaw so the product stays where it was placed.
How often should you get masseter Botox?
Plan on every 3 to 4 months at first. As the muscle shrinks with repeat treatment, many patients stretch the interval to 4 to 6 months. Your injector will suggest a schedule based on how quickly your clenching returns.
Is masseter Botox permanent?
No. The muscle regains activity over several months as the product wears off. Patients who repeat treatment on schedule often find the muscle stays smaller for longer, which is why the second and third visits sometimes need fewer units.
Does masseter Botox help with a double chin?
Masseter Botox works on the chewing muscle at the back of the jaw. A double chin is usually fat or loose skin under the chin, which calls for a different plan. We assess the whole lower face and may suggest Sculptra, jawline filler, or a combination instead.
Is masseter Botox covered by insurance?
When it treats TMJ pain, clenching, or teeth grinding, masseter Botox is typically an eligible HSA and FSA expense. You can pay with your HSA or FSA card at checkout and we provide an itemized receipt. Whether an insurance plan reimburses varies by plan, so check with your insurer before your visit.
Book Masseter Botox in Austin
Masseter treatment starts with an assessment at our South Lamar med spa. Brittany Cantu, AME, checks both masseters, your bite, and the skin along the jaw, then places the units in the same visit if you are ready.
- Book • New Patient: Schedule your first injectables visit
- Book • Returning: Schedule a maintenance visit
- Call or text: 512-890-1130
- Visit: 3005 S Lamar Blvd Suite D-112, Austin TX 78704
Owner & Founder, Banyan & Bamboo Day Spa + Med Spa · South Lamar, Austin TX. Jennifer built Banyan & Bamboo to bring clinical-grade results and boutique-quality experience to South Austin.
