When you hear about Masseter Botox®, chances are you’ve seen it trending on TikTok or Instagram as the secret to a slimmer jawline. But according to medical experts, there’s much more to this popular treatment than aesthetics alone.
For patients dealing with chronic jaw tension, teeth grinding (bruxism), or TMJ (temporomandibular joint) discomfort, Masseter Botox® can offer real, long-term relief.
“It is unbelievable how much Masseter Botox® can help functionally with bruxism,” says Dr. Chelsea Venditto, a board-certified plastic surgeon and founder of Avenue Aesthetic and Reconstructive Surgery in Athens, Georgia. “We see everything from patients with long-standing TMJ issues to those with more mild or moderate grinding who don’t need injections at the normal schedule of every three months. Some can go six months or longer between treatments.”
How Does Masseter Botox® Work?
Masseter Botox® involves injecting small amounts of botulinum toxin into the masseter muscle—one of the main muscles used for chewing—located at the angle of the jaw. The goal? To temporarily relax the muscle, which can ease pain and tension caused by overuse or clenching.
The procedure takes about 15 to 30 minutes, involves no downtime, and results appear gradually over two to four weeks.
Aesthetic Benefits: More Than Just Pain Relief
In addition to its therapeutic benefits, Masseter Botox® is also used cosmetically to contour the face. For individuals with masseter hypertrophy—a condition where the jaw muscles are naturally overdeveloped—Botox® can slim and soften a wide, square jawline. The result is often a more heart-shaped facial appearance that can enhance overall balance and reduce heaviness in the lower face.
The Possible Downsides: What to Know Before You Commit
While the benefits are compelling, it’s important to be aware of the potential drawbacks—especially with long-term or frequent use.
Some experts have raised concerns about the possibility of facial hollowing or sagging if the masseter muscle is continually weakened over time.
“The concern is that if the muscle flattens too much over time, the surrounding soft tissue could shift forward slightly and contribute to jowling,” Dr. Venditto explains. “But in my opinion, that would take years of ongoing injections. If it happened after just a few treatments, it would likely be a very subtle change.”
In other words, occasional or moderate use is unlikely to cause noticeable side effects, but consistent treatment over several years may warrant a conversation with your provider.
Is Masseter Botox® Right for You?
Whether you’re seeking pain relief or a more sculpted jawline, Masseter Botox® offers a minimally invasive option with noticeable benefits. But like any cosmetic procedure, it’s essential to weigh the pros and cons—and consult with a qualified medical professional.
Dr. Chelsea Venditto is a board-certified plastic surgeon and the founder of Avenue Aesthetics in Athens, Georgia. With extensive training in both cosmetic and reconstructive surgery, Dr. Venditto is known for her patient-centered approach, surgical precision, and commitment to natural-looking results. Her goal is to empower individuals with clear, evidence-based information and personalized care at every step.
