What it is
Botulinum toxin placed in the masseter muscles when muscle bulk contributes to a wider lower-face appearance.
The clinician assesses muscle size and movement before injecting a measured dose into each masseter. It is not a treatment for every cause of facial width.
Who it may suit
Adults with a clearly assessed muscle-related concern who want a temporary, non-surgical option.
Who needs extra review
Pregnancy or breastfeeding, infection at the injection site, certain neuromuscular conditions or interacting medicines require medical review.
Planning and results
- Common areas
- Masseter muscles at the jaw angle
- Sessions
- Usually one treatment followed by review; repeat timing depends on the product, dose, area and response.
- When results may appear
- Muscle activity changes first; a visible lower-face contour change, when it occurs, usually takes longer to develop.
- Downtime
- Surface downtime is limited, but chewing fatigue, smile change, asymmetry or contour change can occur.
Pricing and current promotions
Same price as Korean locals — no foreigner markup. GREY does not charge a booking fee or add a markup.
Prices change with each clinic's monthly promotions and the exact product, device, dose, shots or treatment area. Message us for today's clinic rate.
Potential advantages
- Addresses muscle-driven lower-face width
- No filler or surgical incision
- Can be planned asymmetrically when medically appropriate
Limitations & risks
- Will not correct bone structure or skin laxity
- Chewing weakness or an unwanted hollow appearance can occur
- Dose and placement require anatomical assessment
Before your visit
Confirm the brand, total units, dilution, target muscles and follow-up policy rather than comparing price per area alone.
After treatment
Follow the injector's instructions and report significant weakness, swallowing difficulty, breathing symptoms or an unexpected change in vision urgently.
Questions to ask
- Is my concern mainly muscle, bone, fat or skin laxity?
- How many units per side?
- Could this worsen jowling or facial hollowing?
Frequently asked questions
How long does Masseter Botox usually take?
Often 10–30 minutes after assessment and facial or muscle mapping.
How many Masseter Botox sessions might I need?
Usually one treatment followed by review; repeat timing depends on the product, dose, area and response.
When might I notice a change after Masseter Botox?
Muscle activity changes first; a visible lower-face contour change, when it occurs, usually takes longer to develop.