What Is Square Jaw Botox?

Square Jaw Botox is a non-surgical facial contouring treatment that targets the masseter muscles, which are the chewing muscles located at the sides of the jaw. When these muscles are naturally strong, enlarged, or overdeveloped from clenching, grinding, or frequent chewing, the lower face may appear wider or more square.

By injecting Botox into the masseter muscles, the muscles gradually relax and reduce in size over time. This can help create a slimmer, softer, and more balanced jawline without bone surgery or facial contouring surgery.

How Does Botox Slim a Square Jaw?

Botox works by temporarily reducing the activity of the masseter muscles. As the muscles become less active, they gradually shrink in size, creating a narrower lower-face contour.

Unlike surgical jaw reduction, Botox does not change the jawbone. It is most effective when the square jaw appearance is caused by large masseter muscles rather than bone structure. During consultation at Seomyeon One Clinic, the doctor will assess whether your jaw width is mainly muscle-related, bone-related, or a combination of both.

Benefits of Botox for Square Jaw

Botox for square jaw is one of the most popular non-surgical contouring treatments in Korea because it can refine the lower face with minimal downtime.

Benefits include:

• Slims enlarged masseter muscles
• Softens a square lower-face shape
• Creates a more refined V-line appearance
• Helps balance facial proportions
• May reduce jaw tension from clenching
• Non-surgical treatment
• No incisions or scarring
• Minimal discomfort
• Virtually no downtime
• Natural gradual results

Many patients choose this treatment because the result develops slowly and naturally, making the face appear slimmer without a sudden or artificial change.

Who Is a Good Candidate?

Square Jaw Botox is ideal for patients whose lower-face width is caused by enlarged masseter muscles.

You may be a good candidate if you:

• Have a wide or square jawline
• Notice bulky chewing muscles when clenching
• Want a slimmer lower-face contour
• Prefer non-surgical facial contouring
• Want a softer V-line appearance
• Have jaw tension from clenching or grinding
• Want minimal downtime
• Are not ready for jaw reduction surgery

If your jaw width is mainly due to bone structure, Botox may provide limited slimming. In that case, your doctor may discuss other treatment options or realistic expectations.

What Happens During the Procedure?

The procedure is quick and usually completed within 10 to 20 minutes.

The doctor first evaluates your jawline, masseter muscle size, facial proportions, and bite movement. Small amounts of Botox are then injected into precise points within the masseter muscles on both sides of the face.

Most patients experience only mild discomfort, and anesthesia is usually not required. After treatment, patients can return to work, shopping, travel, or normal daily activities immediately.

Results and Recovery

Jawline slimming results do not appear instantly because the masseter muscles need time to relax and gradually reduce in size.

Most patients begin noticing subtle changes within 2 to 4 weeks, with more visible slimming developing over 6 to 8 weeks. Results typically last around 4 to 6 months, depending on muscle size, chewing habits, metabolism, dosage, and individual response.

There is minimal downtime. Mild tenderness, swelling, or small injection marks may occur temporarily but usually resolve quickly.

Square Jaw Botox vs Jaw Reduction Surgery

Square Jaw Botox and jaw reduction surgery treat different causes of a wide lower face.

Botox is best for patients with enlarged masseter muscles. It creates gradual slimming by reducing muscle activity and size. Jaw reduction surgery is more suitable for patients whose square jaw is caused by prominent jawbone structure.

Botox is non-surgical, temporary, and requires minimal downtime, while surgery provides more dramatic structural change but involves incisions, recovery, and higher commitment. Many patients try Botox first before considering surgical options.

Can Square Jaw Botox Help Teeth Grinding?

Masseter Botox may help reduce excessive jaw muscle activity associated with clenching or teeth grinding. By relaxing the masseter muscles, some patients experience less jaw tension and muscle fatigue.

However, if you have severe bruxism, jaw pain, or dental issues, you may also need evaluation by a dentist or specialist. Botox can be part of a management plan, but it may not replace dental treatment when bite or joint issues are involved.

Can Square Jaw Botox Be Combined with Other Treatments?

Yes. Square Jaw Botox is commonly combined with other facial aesthetic treatments to create a more balanced V-line result.

Popular combination treatments include:

• Chin Botox
• Chin Fillers
• Jawline Contouring
• Skin Botox
• HIFU Lifting
• Radiofrequency Skin Tightening
• Skin Boosters
• Facial Slimming Treatments

Your doctor will recommend the best treatment plan depending on your face shape, muscle size, skin laxity, and desired result.

Why Choose Seomyeon One Clinic?

At Seomyeon One Clinic, Botox for square jaw is customized according to each patient’s masseter muscle size, facial proportions, jawline shape, and aesthetic goals. The medical team focuses on natural-looking slimming, facial balance, and safe injection technique.

Conveniently located in central Busan, One Clinic welcomes both Korean residents and international patients seeking non-surgical facial contouring and jawline slimming.

Seomyeon One Clinic
6F, Inje Medical New Building
785 Gayadae-ro, Busanjin-gu, Busan, Korea

Frequently Asked Questions

What is Botox for square jaw?

Botox for square jaw is a non-surgical treatment that relaxes enlarged masseter muscles to create a slimmer and softer lower-face shape. It is also called jawline Botox or masseter Botox.

How does Botox make the jaw slimmer?

Botox reduces activity in the masseter muscles. As the muscles become less active, they gradually decrease in size, which can make the lower face appear narrower and more V-line.

Who is a good candidate for square jaw Botox?

Good candidates are patients whose square jaw appearance is caused mainly by enlarged masseter muscles rather than bone structure. If your jawline becomes visibly bulky when you clench, you may be a suitable candidate.

When will I see results?

Most patients begin noticing subtle slimming within 2 to 4 weeks. More visible jawline refinement usually appears around 6 to 8 weeks as the masseter muscles gradually reduce in size.

How long does square jaw Botox last?

Results usually last around 4 to 6 months, depending on muscle size, dosage, chewing habits, metabolism, and individual response. Maintenance treatments can help preserve a slimmer jawline.

Is square jaw Botox painful?

Most patients experience only mild discomfort because very fine needles are used. The procedure is quick and usually completed within 10 to 20 minutes.

Is there downtime after square jaw Botox?

There is minimal downtime. Most patients return to work, travel, and normal daily activities immediately after treatment. Mild tenderness or small injection marks may occur temporarily.

Can square jaw Botox help teeth grinding?

Masseter Botox may help reduce jaw muscle tension caused by clenching or grinding. However, patients with severe bruxism, jaw pain, or dental problems should also consult a dentist or specialist.

Can Botox reduce jawbone size?

No. Botox does not change the jawbone. It only reduces the size and activity of the masseter muscles. Patients with a bone-related square jaw may need other treatment options.

Where can I get Botox for square jaw in Busan?

Botox for square jaw is available at Seomyeon One Clinic in Busan, located at 6F, Inje Medical New Building, 785 Gayadae-ro, Busanjin-gu, Busan, Korea.