Hello, I'm Planning a Jaw Line Reduction with Botox. How Big is the Risk That my Smile Will Be Affected?

Botox jaw line reduction - risks & side effects

Doctor Answers 7

Not if done correctly

Botox can be administered directly into the masseter muscles by an experienced surgeon.  The masseter muscles are larger muscles located at the angle of the jaw, and injecting 15-30 units into each side will give a facial "slimming" effect.  The nerves that affect the smile are much deeper than superficial masseter injections.

Beverly Hills Plastic Surgeon
5.0 out of 5 stars 49 reviews

Botox Jawline Correction

Botox for the masseter muscle requires precision.  The reason is that the nerve that innervates the face is located very close to the injection site.  I have seen patients who have had unintended facial paresis (facial droop) from experienced injectors in which it lasted near 6-8 months.  

Fortunately, I have never had a facial droop after a masseter injection.  Seek an experienced botox masseter injector and the likelihood of a facial droop is likely low.

Anil R. Shah, MD
Chicago Facial Plastic Surgeon
4.8 out of 5 stars 162 reviews

Botox to Slim Jawline

If you see a highly qualified and experienced Botox injector, the results of Botox for jawline reduction can be quite positive.

Kimberly Butterwick, MD
San Diego Dermatologic Surgeon
5.0 out of 5 stars 17 reviews

Botox for Jawline Reduction

As a board-certified dermatologist and expert injector, I recommend you find an experienced Botox injector for jawline reduction. When injected by an expert into the masseter muscle, Botox can effectively slim the jawline without affecting the smile. If your smile is affected, this result will eventually wear off as the Botox does.

Mitchel P. Goldman, MD
San Diego Dermatologic Surgeon
4.9 out of 5 stars 25 reviews

Jaw line reduction


We don't think that the risk is high but it can happen. If it does it could last for about 4 months. It has to be done by an experienced injector.

Jhonny Salomon, MD
Miami Plastic Surgeon
4.3 out of 5 stars 45 reviews

Jaw line reduction

Your smile is not going to be affected if treated by an expert injector. Have you considered a permanent solution by reducing the amount of bone of your jaw? The procedure takes about an hour while you are sleeping, postoperative there is some swelling, results are permanent - once the swelling recedes. 

Vartan Mardirossian, MD
Jupiter Facial Plastic Surgeon
4.7 out of 5 stars 37 reviews

Botox affecting a smile

Dear Leamaria,

In experienced hands the injection of Botox into the masseteric muscles is not an issue. Experience is needed as many of the branches of the facial nerve cross the area of interest in the procedure you are mentioning. It is important to be seen by a surgical facial specialist who understands the anatomy (has taken it all apart and placed it back together - in the living).

Be healthy and be well,

James M. Ridgway, MD, FACS

James M. Ridgway, MD, FACS
Bellevue Facial Plastic Surgeon
5.0 out of 5 stars 91 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.