Masseter Botox®

Slim a wide, square jaw and ease clenching and grinding with a few quick injections, no surgery and no downtime

An injector treating a man's masseter muscle with Botox for jaw slimming and clenching

Masseter Botox® in Los Angeles

Your masseters are the chewing muscles at the back of your jaw. When they're overworked by clenching, grinding or simply genetics, they can grow bulky, giving the lower face a wide, square look and leaving your jaw tight and sore.

Masseter Botox® relaxes these muscles. Clenching and grinding ease, jaw tension lets up, and as the muscle slims over the following weeks, the lower face looks softer and more tapered. Treatment takes minutes, with no surgery and no downtime.

Masseter Botox® Can Help With

  • A wide, square jawline
  • Daytime clenching
  • Nighttime teeth grinding
  • TMJ tension & jaw soreness
  • A bulky lower face
  • A more tapered face shape

Masseter Botox® for Men

Plenty of men want to keep a strong, square jaw, and that's fine. We can dose to ease clenching and grinding while your jawline stays defined. If a bulky masseter is widening your face, a fuller treatment slims it for a leaner, sharper look. Your injector tailors the plan to the result you want. See Brotox for everything else we treat for men.

Treatment Time

10-15 minutes

Clenching Relief

1-2 weeks

Slimming Shows

4-6 weeks

Results Last

4-6 months

Masseter Botox® Before & After

Real results from our Downtown LA office: the jawline slims and the lower face tapers as the masseter muscle relaxes.

Masseter Botox before and after at MedBeautyLA, showing a slimmer, more tapered jawline

Jaw Slimming

Masseter Botox®, before and after

Masseter Botox before and after at MedBeautyLA: a wide lower face and jaw refined into a softer, slimmer contour

Jaw Refinement

Masseter Botox®, before and after

Individual results may vary. Slimming builds over four to six weeks as the muscle relaxes.

Benefits of Masseter Botox®

✨

Slimmer Jawline

A softer, more tapered lower face

⚡

Quick Treatment

A few injections per side, done in minutes

🎯

Clenching Relief

Less grinding, tension and jaw soreness

🛡️

No Surgery

No incisions and no downtime

🔬

Tailored Dosing

Matched to the size and strength of your muscle

🕒

Lasting Results

Typically four to six months per treatment

What to Expect

1

Consultation

Your injector feels the muscle as you clench and talks through your goals

2

Treatment

A few quick injections into each masseter, in 10 to 15 minutes

3

Relief

Clenching eases in one to two weeks, and slimming follows

4

Maintenance

Most clients repeat every four to six months

The MedBeautyLA Guide

Everything to Know About Masseter Botox®

For facial slimming and TMJ: what masseter Botox® is, and the two goals it's used for.

What Is Masseter Botox®?

Many of our patients are familiar with Botox® and Botox®-like treatments for wrinkle reduction. But many are much less familiar with masseter Botox® injections. This leads us to the understandable question: what is masseter Botox®?

The masseters are the chewing muscles at the back of the jaw. Masseter Botox® is a medical-grade jawline treatment that relaxes these muscles with a few injections on each side.

Anatomy illustration of the side of the head showing the chewing muscles, with the temporalis above the ear and the masseter along the back of the jaw
The masseter sits along the back of the jaw. Illustration adapted from OpenStax Anatomy & Physiology (CC BY 4.0).

TMJ Relief and Jaw Slimming

Masseter Botox® typically has one of two goals. The first is to alleviate jaw pain caused by TMJ (temporomandibular joint) disorder. The second — and most relevant for most of our aesthetic clients — is to slim and refine the jawline. It is an extremely common, safe, and well-tolerated procedure that can be done in as little as 10 minutes.

Frequently Asked Questions

Does masseter Botox® hurt?

It is an extremely tolerable procedure. It does not require any topical numbing and it is done within minutes. Most people feel a few quick pinches, and you can go straight back to your day.

How long until I see results?

Relief from clenching often starts within one to two weeks. The slimming builds gradually as the muscle relaxes and is usually visible after about four to six weeks.

Will it change how I chew or smile?

You'll chew normally, though some people notice their jaw tires a little sooner with tough foods for the first few weeks. Your smile is controlled by different muscles, and careful placement keeps it natural.

How many units will I need?

The number of Botox® units (or Dysport®, Daxxify®, Xeomin®, etc.) varies from person to person, depending on factors like face shape and muscle strength, and on whether your goal is relief, slimming or both. We typically see anywhere from 15 units of Botox® per side (30 units total) to 40 units per side (80 units total). Additionally, male patients can expect to require more units than female patients. Your injector will recommend a dose at your visit.

How much does masseter Botox® cost?

As with all aesthetic treatments, masseter Botox® cost will vary by geographic location and the experience level of your provider. It is important to always choose an experienced and skilled provider when selecting your masseter injector.

At MedBeautyLA, Botox® is priced per unit, so your cost depends on how many units your masseters need, usually 30 to 80 in total. Call or text us at (213) 640-4008 for current pricing, or book a consultation and your injector will quote your dose.

Who is a good candidate for masseter reduction?

There is no "right" candidate for masseter reduction. Treatment often simply depends on a client's individual preferences and facial balancing goals. Clients suffering from TMJ are often excellent candidates for treatment regardless of aesthetic goals.

Does masseter Botox® help with TMJ?

Many people come to us for jaw pain from clenching, grinding and TMJ (temporomandibular joint) tension rather than for slimming. Relaxing the masseters takes pressure off the jaw, and clients with TMJ symptoms are often excellent candidates regardless of their aesthetic goals.

Can you do masseter Dysport®, masseter Daxxify®, or masseter Xeomin®?

Absolutely! In this context, Botox® is used as a catch-all word for any and all neuromodulators. Similar products designed to relax and immobilize muscles are also extremely effective in the masseters.

Is there a way to reduce masseter muscles naturally, without Botox®?

There is not much that can be done to reduce masseter size without medical-grade intervention like Botox®. This is because masseter muscle size is genetic. However, repeated Botox® treatments to relax the area will cause a reduction in these muscles over time, and clients will ultimately require fewer treatments to maintain the same results.

What is proper aftercare?

Masseter Botox® aftercare is identical to Botox® treatments in all other areas of the face. Avoid touching or rubbing the treated area for at least 24 hours. Avoid lying down or bending over for at least 4 hours after treatment. Avoid strenuous exercise or excessive heat exposure for at least 24 hours after treatment. Avoid drinking alcohol or smoking for at least 24 hours after treatment.

Will I bruise?

As with all injectable treatments, there is a chance of mild bruising with masseter injections. Any potential bruising should clear up within a week and is not cause for concern.

How long does it last?

Typically four to six months. Many people find that with regular treatments they can go longer between visits.

Can I combine masseter Botox® with other treatments?

Absolutely. This treatment pairs extremely well with chin and jawline filler, as well as cheek filler, to achieve optimum facial balancing.

Many clients also pair it with Botox® for forehead and frown lines. Men often add jawline filler for men.

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Ready for a Slimmer, More Relaxed Jaw?

Book your masseter Botox® appointment at our Downtown L.A. location