Published by Dr Hasaneen
Published date 23.02.26
Masseter Botox is one of the most effective non-surgical treatments for jawline slimming, teeth grinding, and facial contouring. One of the most common questions patients have is: “How many units of Botox will I need?”
At Dr Hass Clinic, we tailor every Masseter Botox treatment to your individual anatomy, muscle strength, and aesthetic goals. Understanding dosage helps patients set realistic expectations, optimise results, and maintain safety.
The masseter is the main chewing muscle, located at the back of your jaw. Botox works by temporarily relaxing this muscle, which leads to:
The amount of Botox needed depends on muscle size, strength, and desired effect, which is why there is no single standard dose.
For jawline slimming in adults, the average dosage per side typically falls between 20–40 units, although some patients may require slightly more or less. Key points to note:
Note: These are approximate ranges. Only a qualified injector can determine the precise dosage based on a personalised assessment.
The dosage used for Masseter Botox can be influenced by:
1. Muscle Size and Thickness
Thicker, stronger masseters need more units to achieve noticeable slimming. Muscle size is assessed by palpation and visual observation of the jawline at rest and during clenching.
2. Desired Degree of Slimming
Some patients want subtle contouring, while others want a more dramatic narrowing. Conservative dosing reduces the risk of over-relaxation and uneven results.
3. Previous Treatments
Patients who have had prior Botox may require fewer units because the muscle is already partially relaxed. Repeat treatments are adjusted based on previous response.
4. Facial Symmetry
Slight differences between the left and right masseter muscles may require asymmetric dosing to achieve balance. Symmetry is critical for a natural-looking jawline.
5. Gender and Age
Men often require slightly higher doses due to stronger jaw muscles. Age may influence muscle strength and skin elasticity, affecting how the dosage is calculated.
Proper injection technique is essential for effective results and minimal side effects:
After treatment, patients may notice:
Tip: It is important to avoid massaging or applying pressure to the area immediately after treatment to prevent uneven distribution.
Masseter Botox is highly safe when performed by a qualified practitioner:
At Dr Hass Clinic, every Masseter Botox treatment is:
Your treatment is not “one-size-fits-all.” Personalised dosing and precise injection technique are what make Masseter Botox both effective and safe.
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