
What Lip Fillers Are the Best? Your Guide to Natural Lips
July 13, 2026
Can Botox Be Permanent? The Truth About Wrinkle Relaxers
July 15, 2026A beautifully balanced, contoured facial structure is highly desired, yet many find that their lower face naturally carries more bulk than they prefer. If you are looking to soften a square jawline or achieve a more oval-shaped face, you are likely wondering what botox slims your face.
The treatment that achieves this is known as masseter Botox, which targets the masseter muscles located at the back of your jaw. When these chewing muscles become overworked from clenching, chewing, or stress, they grow larger, just like any other muscle in the body. This enlargement can widen the lower third of your face, giving it a heavier, more square appearance. By administering targeted injections, we can gently relax these muscles. Over time, this relaxation leads to a subtle reduction in muscle size, softening the jawline and restoring a balanced, elegant contour. You can explore how we approach custom, subtle wrinkle relaxers in Coral Gables to achieve a natural look.
At Pōk Aesthetic Bar, our team focuses on custom, subtle enhancements. Our practice, co-founded by Patricia Ghassemi, MSN, ARNP, FNP-BC, and board-certified physician Dr. Poopak Ghassemi, MD, prioritizes a personalized consultation process. This ensures your facial slimming journey is tailored precisely to your unique facial anatomy.
Understanding the Science Behind Masseter Botox
To understand how masseter injections work, it is helpful to look at how the muscles behave. The masseters are powerful muscles used for chewing and clenching your teeth. When a neuromodulator is placed directly into this muscle, it temporarily blocks the nerve signals that tell the muscle to contract.
With reduced activity, the muscle gradually relaxes and decreases in volume. This process (often referred to as muscle reduction or therapeutic atrophy) is similar to how any muscle slims down when it is no longer undergoing intense daily workouts.
While the aesthetic result is a beautifully contoured lower face, many clients also find deep physical relief from this treatment. Relieving the tension in these hyperactive jaw muscles can significantly reduce discomfort associated with teeth grinding (bruxism) and temporal jaw clenching. According to clinical consensus published by the National Institutes of Health, botulinum toxin injections into the masseter muscle offer a highly effective, minimally invasive therapeutic option for both jaw muscle hypertrophy and associated temporomandibular clenching. Furthermore, safety reviews from the U.S. Food and Drug Administration confirm that these neuromodulators have a long, proven profile of safety and predictability when administered by qualified medical providers.
What to Expect During and After Masseter Botox
The treatment itself is incredibly quick and simple, taking only about 15 to 30 minutes. We prioritize your comfort throughout the process. A topical numbing cream can be applied beforehand, and because the injection uses a tiny needle, most clients describe the sensation as a quick, mild pinch.
There is no downtime associated with masseter Botox. You can easily schedule your session during a lunch break and return to your daily routine immediately after. We simply recommend that you avoid lying flat, rubbing your face, or engaging in intense physical exercise for the first few hours following your treatment to ensure the product remains perfectly localized.
Unlike wrinkle treatments on the forehead or around the eyes, which show results in a few days, facial slimming takes a bit more patience. You will begin to feel your jaw muscles softening within a week, but the visible slimming effect typically peaks around four to six weeks. This timeline gives the muscle the necessary time to relax and naturally shrink in size.
Learn more about Pōk Aesthetic Bar
Frequently Asked Questions
How long does the face-slimming effect last?
For most clients, the slimming effect of masseter Botox lasts between four to six months. Because the masseter is a large, active muscle, you may find that scheduling consistent maintenance treatments helps maintain your desired jawline contour.
Will masseter Botox affect my ability to chew?
No. Your jaw has several other muscles that assist with chewing. While your masseter muscles will be beautifully relaxed, you will still be able to eat and chew normal foods completely comfortably.
Is masseter Botox permanent?
The effects are not permanent. Over a period of several months, your body will naturally metabolize the product, and muscle movement will gradually return. Regular maintenance sessions are recommended to keep the relaxed, slimmed appearance.
Can masseter Botox help with TMJ and clenching?
Yes. Although many clients seek this treatment for its cosmetic benefits, relaxing the masseter muscle is highly effective at reducing the painful clenching and grinding associated with TMJ issues.
How do I know if I am a good candidate for facial slimming?
If the fullness in your lower face is caused by enlarged jaw muscles rather than excess fat, you are likely an excellent candidate. During a personal consultation, we will assess your anatomy to ensure this treatment will give you the elegant, balanced results you are looking for.

