How many units are used for masseter Botox?

The page states that treatment typically uses about 20 units of Botox per side, for a total of around 40 units for both masseter muscles.

How much does masseter Botox cost?

The page states that masseter Botox treatment for both sides is usually under $500.

How soon can I see effects from masseter Botox?

Initial effects may begin within several days, with fuller results generally becoming evident within 2 to 4 weeks and continued slimming over time as the muscle becomes less active.

Masseter BOTOX Treatment In Torrance

Q: What does Botox for masseters do?

Botox for the masseter muscles helps relax enlarged chewing muscles. Patients may pursue this treatment to soften a square or bulky jawline, improve facial balance, and in some cases address symptoms related to clenching, grinding, or TMJ discomfort.

Q: Who may be a good candidate for masseter Botox?

A good candidate may have overdeveloped masseter muscles, muscle-driven jaw width rather than bone-driven width, and facial proportions that may benefit from conservative jaw slimming. An in-person anatomical evaluation is important before treatment.

Q: What results can you expect from masseter Botox?

Results are designed to be gradual, natural, and balanced with the rest of the face. Most patients begin noticing changes between 4 and 8 weeks.

Q: How long does Botox for masseters last?

The duration varies by person but typically lasts around 3 to 6 months. Maintenance treatments are often needed to sustain the result.

Q: Is Botox for masseters safe?

Botox injections for the masseters are generally considered safe when performed by a qualified healthcare professional. Potential risks can include temporary muscle weakness, injection-site discomfort, bruising, headaches, and rarely asymmetry or difficulty with certain facial movements.

Performed by Dr. Michael Lum | Natural Jaw Slimming & Facial Balance

Lumier Medical Michael Lum, DO Aesthetic Medical Spa located in Torrance, CA

At Lumier Medical, Masseter BOTOX® is performed by Dr. Michael Lum, a physician known for his conservative, patient-first approach to aesthetic medicine. Dr. Lum does not believe in chasing trends or overcorrecting faces. His philosophy is simple: preserve balance, respect anatomy, and intervene only when it truly serves the patient.

When used thoughtfully, BOTOX® for the masseter muscles can soften a wide or bulky jawline and restore facial harmony — without making you look altered or “done.”

What Are the Masseter Muscles?

The masseter muscles are the primary muscles responsible for chewing and are located along the sides of the jaw. These muscles are naturally strong, but in some individuals they become overdeveloped.

Dr. Lum most often sees enlarged masseters caused by:

Genetics
Chronic clenching or grinding
Long-term muscle overuse

As the muscle enlarges, the lower face can appear square, heavy, or overly prominent — especially when smiling or clenching the jaw.

How Dr. Lum Uses BOTOX® in the Masseters

Dr. Lum uses precise, low-dose BOTOX® injections to gently relax the masseter muscles. Botox® works by temporarily blocking acetylcholine, the chemical signal that tells muscles to contract.

When muscle activity is reduced:

Excess bulk gradually decreases
The jawline softens over time
Facial proportions become more balanced
Results remain natural and subtle

This process happens slowly — which Dr. Lum considers essential. Rapid or aggressive muscle weakening is avoided.

Dr. Lum’s Philosophy on Masseter BOTOX®

Not every wide jaw should be slimmed — and Dr. Lum is very clear about that.

At Lumier Medical:

Facial balance always comes first
Conservative dosing is the rule, not the exception
Long-term aesthetics matter more than short-term trends
Patients are never pushed into unnecessary treatment

If masseter BOTOX® is unlikely to improve your facial balance, Dr. Lum will tell you that directly.

BOTOX for Masseters FAQs

What does BOTOX for Masseters do?

BOTOX, or Botulinum Toxin, is a neurotoxin produced by the bacterium Clostridium botulinum. It is commonly known for its cosmetic applications, but it also has various medical uses. One of its lesser-known applications is for treating hypertrophy, or enlargement, of the masseter muscles.

Many people choose this treatment to treat TMJ (Temporal Mandibular Joint) pain. Others use it to make the lower part of their faces more slender for a youthful, inverted triangle shape.

Who May Be a Good Candidate For Masseter BOTOX?

You may be a candidate for Masseter BOTOX® if Dr. Lum determines:

The masseter muscles are overdeveloped
Jaw width is muscle-driven rather than bone-driven
Jaw slimming would improve facial harmony
A non-surgical approach is appropriate

A proper in-person evaluation is essential. This is not a treatment that should be performed without anatomical assessment.

How many units for masseter botox?

Typically, we inject around 20 Units of Botox per side for a total of 40 Units for both masseter muscles.

How much is Masseter Botox?

The masseter botox treatment including both sides is usually under $500.

What Results Can You Expect From Masseter Botox??

Under Dr. Lum’s care, results are designed to be:

Gradual and natural
Noticeable without being obvious
Balanced with the rest of the face

Most patients begin noticing changes between 4–8 weeks, with results lasting approximately 3–6 months, depending on muscle strength and activity.

How soon can I see effects?

After the treatment, it may take several days to start noticing the effects, and the full results generally become evident within two to four weeks. Over the course of months, the masseter muscles will continue to slim down (atrophy) due to decreased use.

How long does BOTOX for Masseters last?

The duration of the effect varies from person to person but typically lasts around three to six months. Regular maintenance treatments are necessary to sustain the desired jawline appearance.

Is BOTOX for Masseters safe?

BOTOX injections for masseters are generally considered safe when performed by qualified healthcare professionals. However, as with any medical procedure, there are potential risks and side effects. These can include temporary muscle weakness, pain or discomfort at the injection site, bruising, headaches, and, rarely, asymmetry or difficulty with certain facial movements.

Discover BOTOX’s therapeutic applications beyond cosmetic enhancement:

Botox for TMJ Disorder – Relieve chronic jaw clenching, teeth grinding, and TMJ-related headaches
Botox for Migraines – FDA-approved treatment providing relief for patients with 15+ headache days per month
Botox for Mouth Frowns – Lift drooping mouth lines caused by the depressor anguli oris muscle
Botox for Neck Bands – Smooth prominent vertical neck cords for a more youthful neck contour
Botox for Anxiety – Emerging treatment showing promise in reducing physical symptoms of stress and anxiety

Hours

Monday: 9:00 am – 5:00 pm
Tuesday: 9:00 am – 5:00 pm
Wednesday: 9:00 am – 5:00 pm
Thursday: 9:00 am – 5:00 pm
Friday: 9:00 am – 5:00 pm
Saturday: By Appointment Only
Sunday: Closed

Get Directions To Lumier Medical In Torrance, CA

Lumier Medical is conveniently located in Torrance and serves patients throughout the South Bay including Redondo Beach, Manhattan Beach, Palos Verdes, and nearby Los Angeles neighborhoods.

Schedule Your Masseter Botox Consultation in Torrance, CA

Lumier Medical proudly serves the coastal communities of Manhattan Beach, Hermosa Beach, and Rolling Hills Estates. Our Torrance-based clinic is a central hub for South Bay residents seeking physician-led aesthetic care without the commute to Beverly Hills.

Looking for a Botox specialist near Torrance, CA? Contact Dr. Lum at Lumier Medical, to schedule your Botox consultation today.

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Lumier Medical

Masseter Botox In Torrance By Dr. Lum