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What Are The Side Effects of BOTOX in Masseter Muscle?

By: Beauty Coordinators


BOTOX® is known as a cosmetic treatment that addresses mild to moderate frown lines. Today, BOTOX® is a common household name and one of the most popular procedures in the U.S. However, this injectable has much more to offer than just correcting smile lines and Crow’s feet. You may be surprised to learn that BOTOX masseter injections can correct an unflattering jawline.

If you struggle with having an asymmetrical or masculine jawline, contact Body+Beauty Lab in Philadelphia, PA for a BOTOX consultation. We can explain the benefits and risks of cosmetic injections, including any possible side effects you may experience.

What is the masseter muscle?

The masseter muscles are located on each side of your jaw. They are the main muscles involved when chewing or opening and closing your mouth. When someone works out these muscles too often, they increase in size and change the shape of your jawline. Unfortunately, this causes some people to have a square or masculine-looking face that does not suit their features.

Common reasons for having an enlarged masseter muscle include:

  • Genetics

  • Ethnicity

  • Jaw clenching

  • Teeth grinding

  • Excessive chewing

  • Chewing on one side of the mouth

Using BOTOX for jawline slimming

BOTOX is made from botulinum toxin, which is designed to relax the muscles. When injected into the masseter muscles, BOTOX causes the area to shrink. Patients with a square jawline can enjoy a smaller or more V-shaped face. The best part is that no invasive surgery is required. Injections are performed in our Philadelphia, PA office in just a few minutes.

During your initial consultation, an experienced provider will evaluate your face and listen to your cosmetic goals. Some people want to address asymmetry, while others simply want a smaller jawline. We then carefully mark the treatment areas and administer BOTOX masseter injections. Once we complete your session, we can let you know what to expect in terms of recovery and results.

BOTOX side effects and recovery

Following BOTOX, patients can return to their routines with little downtime. There is usually no discomfort or pain associated with BOTOX. However, we ask that you avoid strenuous activities or pressing down on your jawline for the rest of the day. The initial results take about 7 – 10 days and will continue to develop over the following several weeks. You will notice a slimmer jawline when the masseter muscles begin to atrophy and relax.

Common side effects of BOTOX include mild redness, soreness, and bruising at the injection sites. Others may experience muscle pain. These effects are temporary and can be alleviated with a cool compress or over-the-counter medication. Since results are not permanent, patients may need to schedule additional sessions in the future. Your injector at Body+Beauty Lab can discuss what options work best for your cosmetic needs.

Get BOTOX masseter injections

If you are troubled with your appearance because of a masculine or square jawline, BOTOX may be able to help. Just a few strategically placed injections can make all the difference. To learn if you qualify for BOTOX, contact the experienced professionals at Body+Beauty Lab today. We can schedule an assessment and give you personalized treatment options in Philadelphia, PA.

* All information subject to change. Images may contain models. Individual results are not guaranteed and may vary.