masseter-botox

What Is Masseter Botox?

The masseter is one of the strongest muscles in the body. Located along the sides of the jaw, it’s responsible for chewing and, in many people, involuntary clenching and grinding. When this muscle is overused, often due to teeth grinding or jaw clenching, it can enlarge over time, contributing to jaw pain, stiffness, dental wear, chronic headaches, and a more square-shaped lower face.

Masseter Botox involves injecting botulinum toxin directly into the masseter muscle to reduce its activity. By decreasing masseter muscle contraction, Botox causes the muscle to gradually atrophy, which can both relieve functional discomfort and create a softer, more refined jawline over time.

What Can Masseter Botox Address?

Masseter Botox is a dual-purpose treatment that may help with both functional and cosmetic concerns:

  • Teeth Grinding & Jaw Tension (Bruxism): Many patients seek masseter Botox primarily for relief from bruxism — the habitual grinding or clenching of teeth that often happens during sleep. For those experiencing bruxism, masseter Botox may help reduce jaw tenderness, headaches, earaches, and chewing pain by reducing the muscle’s hyperactivity.
  • TMJ-Related Discomfort: Botox injections into the masseter may help relieve jaw pain and stiffness related to temporomandibular disorder (TMD) in some patients, with the added benefit of softening the jawline when the muscle has enlarged from chronic overuse.
    Individual results and response to treatment vary.
  • Jawline Slimming & Facial Contouring: For patients bothered by a wide or overly square lower face, clinical studies using imaging have shown that botulinum toxin can reduce masseter muscle thickness and visible jaw width, with the most noticeable contour change typically appearing around two to three months after treatment.

What to Expect During Treatment

Masseter Botox is an in-office injectable procedure. The procedure typically takes around 15 minutes, and patients can return to their normal activities the same day — no recovery time is required. A topical numbing cream may be applied beforehand to maximize comfort, and most patients describe the sensation as a brief, mild pressure.

Results are not immediate. Patients can generally expect to see initial softening within one to two weeks, with more noticeable jawline changes appearing around four to six weeks after treatment. Because Botox is temporary, ongoing maintenance treatments are typically needed to sustain results — most patients return every three to six months, depending on their goals and how their muscles respond.

Who Is a Good Candidate?

Masseter Botox may be appropriate for patients who experience chronic jaw clenching or teeth grinding, notice jaw soreness or tension headaches upon waking, or are bothered by a wider or more square lower face caused by muscle bulk rather than bone structure or excess fat. A thorough consultation is the best way to determine whether this treatment is right for you.

Patients who are pregnant or breastfeeding, have active skin infections, have a known botulinum toxin allergy, or have certain neuromuscular conditions may not be appropriate candidates. Your provider will review your full health history before recommending any treatment.

Why Choose a Dermatology Practice for Masseter Botox?

Precise placement and appropriate dosing are essential to both the safety and effectiveness of masseter Botox. Dermatologists perform cosmetic treatments involving facial structures daily, giving them a deep understanding of facial anatomy and how to correctly place Botox injections for optimal, natural-looking results. At Jacksonville Dermatology & Cosmetic Surgery, every injectable treatment is performed by our experienced medical providers — not delegated to non-clinical staff.

See What Our Patients Are Saying

Rose Le
19 hours ago
Staff were friendly and kind. Dr. Zach was easy to talk to, respectful and informative. I love that I was In and out in under an hour for what I needed.
Response from the owner:Thank you, we are thrilled to learn that you had a positive experience with us!
anesley ignacio
4 days ago
Easy and convenient to schedule online. Great and friendly staff…
Response from the owner:Thank you so much for leaving us a stellar review!
My experience is the nicest medical doctor and staff I have run into in a very long time. They all treat me very well. They have even given me free medicine when I have needed it. I enjoy going to this Dermatologist office very much, they take very good care of me and my condition very seriously, thank you Jax Dermatology!!!!
Response from the owner:Your feedback is highly appreciated. Thank you for the review!
Robert Hauser
6 days ago
My exam was thorough and professional. Zach completed 3 procedures with no discomfort at all, making sure sites were totally numb before he proceeded. I recommend Jax Dermatology and Cosmetic Sugery.
Response from the owner:We appreciate the kind words and are glad we could provide you with a positive experience!
Frank Salvati
1 week ago
Exceptional care.
Response from the owner:Thank you, we are thrilled to learn that you had a positive experience with us!
M J (MJ)
1 week ago
She did an amazing job and will definitely get checked every year
Response from the owner:Thanks for taking the time to share your positive experience. We truly appreciate it!
Constance Brogan
2 weeks ago
This was my first visit to Jax Dermatology and I was impressed by the professionalism at the front desk, the knowledge and expertise of the staff and the kindness extended to me during treatment. I arrived very early to my appointment to give me time to fill out paperwork and was more than willing to come back for the actual appointment, however, staff got me in early and there was no "wait" involved I want to thank the staff for such prompt and courteous service.

My second visit on July 2, 2025, was equally satisfying. I was taken into the exam room within 5 minutes of arriving. The services of Dr. Stepien were accomplished with ease and perfect professionalism. I appreciate a practice that values their patients and does their absolute best to provide the services with such knowledge and expert handling. I will continue with Jax Dermatology for all future needs.

I visited again in April 2026 and had a great experience. The PA who did my filler was extremely informative and did great work on my face. I appreciate the professionalism shown by the folks at Jacksonville Dermatology.
Response from the owner:Thank you so much for leaving us a stellar review!
Beth Satterfield
2 weeks ago
Very professional, yet personable. Great staff, and have recommended my friends and co-workers.
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Audra R. Smith
2 weeks ago
On time and educated me throughout the process.
Response from the owner:We appreciate the kind words and are glad we could provide you with a positive experience!
Kelli Urban
2 weeks ago
This team is absolutely amazing. I was so nervous and these ladies handle it with such confidence and grace. It was quick and painless. Went in on Thursday and by Wednesday I had my results. Highly recommend!!
Response from the owner:Thanks for taking the time to share your positive experience. We truly appreciate it!

Schedule a Masseter Botox Consultation in Jacksonville

If you’re ready to explore whether masseter Botox is the right fit for your goals, we’re here to help. Our team will take the time to evaluate your concerns, review your health history, and recommend a personalized treatment plan — with no pressure and no one-size-fits-all protocols.

Call us at (904) 420-7372 or fill out our online contact form.

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