If your square jaw is caused by enlarged masseter muscles rather than your jawbone structure, cosmetic jaw Botox can help create a slimmer, softer facial contour—without surgery. For patients with muscle-related jaw enlargement, masseter Botox is one of the most effective non-surgical treatments for naturally refining the jawline.

However, even when the same Botox product is used, the results are never exactly the same. The outcome depends on how accurately your physician evaluates your facial proportions, masseter muscle size, facial symmetry, and overall facial structure, as well as selecting the appropriate dosage and precise injection sites. For this reason, the physician's experience and knowledge of facial anatomy are far more important than the Botox product itself.

For more than 17 years, BMB Medical has provided Botox treatments and TMJ (temporomandibular joint) therapy in Los Angeles, building extensive clinical experience. Walter Kim, M.D. personally performs every Botox treatment and has earned the trust of countless patients through his expertise, precision, and commitment to patient care.

At BMB Medical, our goal is not simply to make the face appear smaller. We carefully evaluate each patient's facial proportions, muscle development, and facial symmetry to create the most natural, balanced, and aesthetically pleasing facial contour.

What Is Masseter (Jaw) Botox?

Masseter Botox involves injecting botulinum toxin into the enlarged masseter muscle, temporarily reducing excessive muscle activity.

The masseter is one of the primary muscles used for chewing. However, habits such as teeth clenching, teeth grinding (bruxism), frequent chewing of hard foods, or naturally strong jaw muscles can cause the masseter to become enlarged. This can make the jaw appear wider, more angular, and the face appear larger.

Botox works by temporarily reducing the nerve signals that cause muscle contraction. Over time, the enlarged masseter muscle gradually decreases in size, resulting in a softer, slimmer, and more refined jawline.

Benefits of Cosmetic Jaw Botox

Unlike surgical procedures, Botox does not produce immediate changes.

Most patients begin to notice gradual improvement within 2 to 4 weeks, with the most noticeable and natural-looking results developing after approximately 1 to 2 months.

Depending on the individual, benefits may include:

• A softer, less square jawline
• A slimmer, more refined facial appearance
• Reduction in enlarged masseter muscles
• Improved facial balance and symmetry
• Relief of excessive jaw muscle tension
• Patients with muscle-related square jaws typically experience the highest level of satisfaction, although results vary depending on facial anatomy and muscle development.

How Long Do the Results Last?

The effects of cosmetic jaw Botox typically last 4 to 6 months.

As the Botox gradually wears off, the masseter muscle slowly regains its normal function. To maintain consistent results, maintenance treatments every 4 to 6 months may be recommended based on your individual needs.

Why Choose BMB Medical?

Cosmetic jaw Botox is not simply a cosmetic injection—it is a medical procedure that requires an in-depth understanding of facial anatomy and muscle function.

With more than 17 years of clinical experience providing Botox and TMJ treatments in Los Angeles, BMB Medical offers personalized treatment plans tailored to each patient's unique facial structure and goals.

Every Botox treatment is performed personally by Walter Kim, M.D., from consultation and diagnosis to treatment and follow-up care. Dr. Kim carefully evaluates facial proportions, masseter muscle development, and facial symmetry to achieve results that look balanced, natural, and refined.

Our goal is not simply to make your jaw appear smaller. We strive to enhance your natural features while creating a harmonious, elegant facial contour that complements your unique appearance.

Natural beauty begins with an accurate diagnosis.

• Over 17 years of clinical experience
• Every Botox treatment personally performed by an experienced physician
• Extensive knowledge of facial anatomy and precision injection techniques

These are just a few of the reasons why so many patients throughout Los Angeles choose BMB Medical for cosmetic jaw Botox.



Appointments: 323-965-9650