Jawtox (Masseter Reduction)

Perhaps your jaw looks wider when you clench. Perhaps your lower face feels heavier than the rest of your features. Or perhaps you carry so much tension there that relaxing your jaw never feels completely natural.

At Adarna Medical Aesthetics, Jawtox is planned with restraint. The goal is not to erase strength from your face. It is to soften excessive masseter prominence and create a lower-face contour that feels more balanced, relaxed, and naturally yours.

What Is Jawtox?

Jawtox is a doctor-administered treatment that places botulinum toxin type A into the masseter muscles, the powerful chewing muscles located near the angles of the jaw.

The treatment temporarily reduces excessive masseter activity. When these muscles are enlarged, their gradual reduction in bulk may create a softer, less square-looking lower face.

Jawtox affects muscle. It does not shave the jawbone, remove facial fat, or tighten loose skin.

What Can Jawtox Help Improve?

 Following a proper assessment, Jawtox may help:

• Reduce the appearance of enlarged masseter muscles

• Soften a square or muscle-dominant lower face

• Create a more tapered-looking facial contour

• Improve selected asymmetry caused by unequal muscle prominence

• Reduce jaw-muscle activity associated with clenching in selected patients

The treatment will not significantly narrow a lower face that appears wide primarily because of bone structure, facial fat, or skin laxity.

Questions Patients Usually Ask

When will I see a slimmer jaw?

Reduced muscle activity may become noticeable within one to two weeks.

Visible lower-face slimming usually develops more gradually, often becoming clearer after four to eight weeks. 

How dramatic will the result be?

That depends on what is creating the width of your lower face.

Patients with genuinely enlarged masseter muscles may see a noticeable but gradual change. If the width comes mainly from bone, fat, or loose skin, Jawtox may produce little visible slimming.

How long does Jawtox last?

The effect is temporary. Masseter activity and size gradually return as the botulinum toxin wears off.

Many patients experience an effect for several months, commonly around three to six months. Duration varies according to the exact product, dose, muscle strength, metabolism, treatment history, and individual response.

Can Jawtox help with teeth grinding or jaw tension?

It may reduce masseter activity, tension, bite force, and pain in some appropriately selected patients. Jawtox does not cure bruxism, protect teeth from damage, correct the bite, or treat every cause of jaw-joint pain. A dental guard, sleep assessment, physiotherapy, stress management, or other treatment may still be needed.

Can it lift my jawline?

No. Jawtox reduces muscle activity and may soften lower-face width. It is not a skin-tightening or lifting treatment.

If your primary concern is laxity or jowling, another treatment may be more appropriate.

Is the treatment painful?

Most patients feel several brief pinches or stings. The procedure is generally completed within a short clinic visit, although individual sensitivity varies.

Is there downtime?

Temporary redness, tenderness, swelling, bruising, or small raised areas may occur at the injection points. Most patients can return to ordinary activities, following the aftercare provided by our medical team.

Is Jawtox permanent or reversible?

No. The effect gradually wears off as nerve activity returns.

Unlike hyaluronic acid filler, botulinum toxin cannot be dissolved on demand. If an unwanted effect occurs, management generally involves monitoring and allowing the medicine to wear off.