BOTOX® is used for much more than just wrinkles. In addition to reducing unwanted lines on the forehead and around the eyes, BOTOX® can also be used for jaw slimming in Boston, MA. BOTOX® for jaw slimming can help you sculpt a slimmer, more youthful face shape because it relaxes the masseter muscle (chewing muscle). This makes the muscle weaker and causes it to appear less prominent. It can also help with headaches, teeth grinding, clenching, and other issues related to tension in the jaw.

About BOTOX® for Jaw Slimming

Large jaw muscles can cause the face to look wide and more masculine. A person can have large jaw muscles due to genetics, or because the masseter muscle is over-developed. Over-developed jaw muscles can occur because of habitual jaw clenching or teeth grinding. The large muscles add bulk to the face and create a wide, square jaw.

When BOTOX® is injected into the masseter muscles, they soften and relax. Over time, the muscles shrink. This creates a slimmer, more oval face shape. And because BOTOX® temporarily paralyzes the muscles, jaw tension is relieved and issues such as grinding and clenching are improved.

Benefits of BOTOX® for Jaw Slimming

Injecting BOTOX® into the masseter muscle has both cosmetic and medical benefits, including:

  • Creating a slimmer, more youthful face shape

  • Reducing the width of the jawline

  • Improving asymmetry in the jaw

  • Reducing headaches related to jaw tension

  • Preventing damage to the teeth caused by teeth grinding

  • Making it difficult to clench the jaw during times of stress (stress clenching)

  • Easing TMJ symptoms


BOTOX® treatments are quick, easy, and long-lasting. Your BOTOX® treatment for jaw slimming takes just minutes and the benefits can last 3 to 6 months. In addition, there’s no downtime required and any side effects of treatment are minor.

Get Started Now


If you’d like to find out more about BOTOX® for Jaw Slimming, or to schedule a complimentary consultation at our Boston office, please call 617-973-9700. You can also book your appointment online today.


Boston Medical Aesthetics is conveniently located in downtown Boston near Government Center and Faneuil Hall. 

Who Can Have BOTOX® for Jaw Slimming?

There are a number of reasons our Boston-area clients visit us for BOTOX® for jaw slimming. Those who are good candidates for this procedure are people who:

  • Desire a slimmer, more oval-shaped face

  • Want to reduce jaw tension

  • Have issues grinding their teeth or clenching their jaw

  • Are bothered by the large width of their jaw

  • Have an asymmetrical jaw line

  • Suffer from TMJ or jaw pain


It’s important to note that the ideal candidate also has good skin elasticity, firm skin, and taught jaw muscles. If the skin has a large degree of sagging, BOTOX® may not be recommended. Individuals with rounder faces whose face shape is not caused by over-developed jaw muscles will also not benefit from BOTOX® for jaw slimming.

Your BOTOX® Treatment for Jaw Slimming

Our board-certified nurse practitioner, Jennifer Canesi, APN-BC, performs all BOTOX® treatments. Jennifer has helped many people achieve a more flattering jawline while reducing uncomfortable jaw pain.

Your treatment is performed in our office. Ice and a numbing cream are used to make your injections more comfortable. During the procedure, BOTOX® is injected directly into the masseter muscle. Jennifer will determine the appropriate amount of BOTOX® needed based on your goals, your symptoms, and your face shape.

There are very few side effects associated with BOTOX® masseter injections.   This treatment also starts working immediately but you may not see any jaw slimming effects for 2 to 8 weeks. Improvements in jaw tension will occur earlier – usually in 1 to 2 weeks. The benefits of BOTOX® last between 3 to 6 months and can be maintained with regular touchup treatments.

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*skinbetter science products are sold only through physician practices and authorized medical spas. The link provided to purchase skinbetter products is intended only for use by existing skinbetter science users, or patients that have otherwise received a skin consultation by Boston Medical Aesthetics.


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