How many units of jaw Botox do I need?
Quick answer: Most people need about 20–30 units per side, or roughly 40–60 units in total, of a toxin dosed on the standard scale such as Botox or common Korean brands; larger or stronger masseter muscles may need more. At Dernia Clinic Myeongdong, jaw Botox starts from ₩59,000 for both sides with a Korean toxin. Your doctor sets the dose after feeling the muscle as you clench.
- Typical dose: About 20–30 units per side
- Stronger muscles: May need more, as judged by the doctor
- Unit note: Units are product-specific; Dysport uses a different scale
- Slimming shows: Gradually from 2–4 weeks; clearest around 6–8 weeks
- Lasts: About 4–6 months
- Price from: ₩59,000 for both sides (Korean toxin)
The detailed answer
Jaw Botox relaxes the masseter, the chewing muscle at the angle of the jaw. When this muscle is large, from genetics, clenching or grinding, it can make the lower face look square. Relaxing it lets the muscle gradually slim, softening the jawline into a more tapered shape and often easing clenching.
The dose depends on how big and strong your masseters are, not on your weight or age. During consultation, the doctor asks you to clench and feels each side, which are often different. Most people fall within these ranges:
| Masseter size | Typical dose per side | Typical total |
|---|---|---|
| Mild bulk | About 20 units | About 40 units |
| Moderate | About 25–30 units | About 50–60 units |
| Strong or very prominent | 30 units or more | 60 units or more |
Units are specific to each product and not strictly interchangeable. Many doctors dose Botox (Allergan), Xeomin and common Korean toxins such as Botulax and Nabota similarly, but Dysport uses a markedly different scale with higher numbers. Learn more in Korean Botox brands vs Allergan, Xeomin and Dysport.
Why more is not always better
Too high a dose can cause temporary chewing fatigue, a change in your smile if toxin spreads to nearby muscles, or a hollow look below the cheekbones. A measured first dose with a review is safer than overcorrecting. Slimming appears gradually; see the jaw Botox results timeline.
What we recommend
Treat your first session as a starting point. Many people repeat jaw Botox every 4–6 months at first; with repeated treatment the muscle may stay slimmer, so sessions can often be spaced further apart. If your jawline also carries fat or loose skin, the doctor may suggest Shurink Universe or fat-dissolving injections; compare in jaw Botox vs fat-dissolving injection, or see the V-Line Contour Package. Toxins are not recommended during pregnancy or breastfeeding.
Jaw Botox at Dernia starts from ₩59,000 for both sides with a Korean toxin. Prices are in Korean won (KRW), exclude 10% VAT, and are confirmed at your consultation. See the jaw Botox price guide and other treatments, or book a consultation to have your masseters assessed.
Not sure which treatment is right for you?
Tell us your concerns and your travel dates. A doctor examines your skin in person, explains your options in English, and confirms the plan and price before anything is done.
FAQ
Related questions
Straight answers from our medical team. Still unsure? Ask a doctor or browse all patient questions .
Are units the same across toxin brands?
Not exactly, because units are specific to each product. Botox, Xeomin and common Korean toxins are often dosed similarly, but Dysport uses a different scale, so always ask which product and dose you are receiving.
Does jaw Botox help with clenching and grinding?
It can reduce the force of clenching and the muscle tension many people feel. Night-time grinding has several causes, so your dentist may also recommend a night guard.
How long does jaw Botox last?
Usually about 4–6 months. With repeated treatments, the muscle often stays slimmer for longer.
Is jaw Botox right for my square jaw?
It helps when muscle bulk causes the width. If bone structure or fat is the main factor, other options may suit better. See square jaw treatment.
Keep exploring
Related treatments, prices and guides
Jaw Botox
- Jaw Botox in Seoul — masseter slimming explained
- Jaw Botox price — from ₩59,000 for both sides
- Jaw Botox results timeline — when slimming shows
- Jaw Botox review — our medical team's verdict
Concerns and areas
- Square jaw — muscle, bone or fat?
- Jawline and V-line treatments — all options for the area
Compare and packages
- Jaw Botox vs fat-dissolving injection — muscle vs fat
- V-Line Contour Package — jaw Botox, Shurink and fat-dissolving
- Trapezius Botox — shoulder line slimming
Guides and questions
- Korean Botox brands explained — units and brands
- Is Korean Botox safe? — approval and quality
- How much is Botox in Korea? — prices by area
Plan your visit to Dernia Clinic Myeongdong
English consultations, clear prices in Korean won and treatment plans built around your time in Seoul. Tell us your dates and we will suggest a schedule that fits.
Individual results vary. Suitability, dosage and final price are confirmed by a licensed doctor at your consultation. Prices are in Korean won (KRW) and exclude 10% VAT. Medical disclaimer