Korea masseter Botox is botulinum toxin type A placed into the jaw-closing muscle so it works less and, over several weeks, loses bulk; one round usually holds for about three to four months. The jaw corner is only one of four lower-face zones toxin can reach. The mouth corners, the chin pad and the neck bands sit nearby, and a broad lower face sometimes needs a mix of these, or chin gel, rather than more units in the jaw.
Clinics in Korea
0 clinics for Botox and fillers in Korea
Every clinic below lists Botox and fillers among its treatments. Message a clinic directly.
Guide
Why a narrower jaw line is such a frequent request in Asia
An oval face that tapers toward the chin is widely seen as favorable in many Asian countries, and slimming the lower face with toxin is a routine request there. A 2023 review by Wu and colleagues in Aesthetic Surgery Journal Open Forum makes that point, and adds one that visitors rarely hear: using toxin to reduce masseter prominence is not officially approved for this indication in any country.
Off-label does not mean improvised. Dose, points and spacing come from published experience and the doctor's judgment rather than a product label. The same review describes separate plans for symmetric and uneven jaws, a reminder that one fixed recipe does not fit every face.
Guide
Four lower-face muscles a doctor may treat with toxin
A 2019 commentary by Jabbour and colleagues in the Aesthetic Surgery Journal discussed updates in toxin treatment of the lower face and neck, a region where small changes in placement have large effects. Each muscle below does a different job, so each one changes a different feature.
| Muscle | Where it sits | What relaxing it changes | What to watch for |
|---|---|---|---|
| Masseter | Angle of the jaw, felt when you clench | Width at the jaw corner, slowly over weeks | Tired bite for a while; a bulge if a band is missed |
| Depressor anguli oris | Below each mouth corner | Corners that pull downward | An uneven smile if toxin spreads inward |
| Mentalis | The chin pad | A dimpled, pebbled chin when you speak | Lip control changes if placed too high |
| Platysma | Thin sheet across the neck | Vertical neck bands and a softer jaw edge | Swallowing or neck weakness with high doses |
Guide
When the width comes from something toxin cannot reach
Toxin acts only on muscle. If the wide look comes from a flared jawbone, a full fat pad, a prominent salivary gland or skin folding along the jawline, extra units will not narrow it. The doctor sorts this out by hand, sometimes with an ultrasound probe, while you bite down.
- The jaw corner hardens and pushes outward when you clench: muscle is a large part of the width.
- The jaw feels the same clenched and relaxed: bone or soft tissue is more likely.
- Fullness sits in front of the ear, not at the angle: the gland or fat, not the masseter, is involved.
- A soft fold hangs below the jaw line: lifting or skin treatment answers this better than toxin.
Guide
Jaw toxin next to chin gel on an injectables trip
A wide jaw over a short chin can look broader than it is. Some plans soften the jaw corners with toxin and add a little hyaluronic acid gel to the chin, lengthening the lower third so the face reads as more oval. Toxin relaxes muscle; gel adds structure.
Gel shows at once, while toxin needs several weeks before the jaw looks slimmer, so the doctor may judge the jaw later. Expect small bruises at the gel points and take written aftercare on chewing, massage and what to report.
Guide
Questions that show the plan was built for your face
A short list asked at consultation tells you more than a menu does, and written answers make the plan easy to repeat.
- Which muscles are being treated, and why each one?
- Which toxin product goes into the jaw, and how many units per side?
- Is the width partly bone, fat or gland, and what would help that part?
- When is the review, and what happens if a bulge appears?
- Is today a reason to wait: pregnancy, breastfeeding, a nerve or muscle disorder, or broken skin over the jaw?
Evidence
Research behind this page
- Updates in the Treatment of the Lower Face and Neck With Botulinum Toxin InjectionsAesthetic Surgery Journal · 2019 · doi:10.1093/asj/sjy286
A short commentary on another Aesthetic Surgery Journal article, discussing updates in the use of botulinum toxin for the lower face and neck.
- Botulinum Toxin Type A for the Treatment of Masseter Muscle Prominence in Asian PopulationsAesthetic Surgery Journal Open Forum · 2023 · doi:10.1093/asjof/ojad005
A review of injection technique, mechanism and efficacy for masseter prominence in Asian patients, noting the use is off-label everywhere and giving example plans for symmetric and uneven jaws.
FAQ
Questions about Botox and fillers in Korea
Is jaw slimming with toxin an approved use of the product?
No country has officially approved toxin for reducing masseter prominence, so jaw slimming is an off-label use. A 2023 review by Wu and colleagues in Aesthetic Surgery Journal Open Forum states this directly while describing how widely the treatment is performed in Asia. In practice it means the treating doctor chooses dose and points from published experience rather than a label. Ask for the product name and units per side in writing so the plan can be repeated.
Can masseter Botox in Seoul fit into a three-day stay?
Yes, the injections take only minutes and flying home on the same day is generally possible. Small bruises or tenderness at the injection points usually fade within days, and chewing may feel weaker for a few weeks. The slimmer jaw itself appears gradually over several weeks, so the visible result arrives after you have left. Plan a photo check at home around the second month and keep the clinic's written aftercare.
Can the mouth corners or chin be treated in the same visit as the jaw?
Often they can, because each zone is a separate small set of injections into a different muscle. The doctor needs to plan the total dose and the order so toxin does not drift toward the smile muscles. Downturned corners respond to treatment of the depressor muscle, and a dimpled chin to the mentalis. Tell the doctor about any recent dental work or lip injections first, since that can change where points are placed.
Will toxin in the jaw make a double chin or jowls look worse?
It can, if the lower face was wide because of fat or loose skin rather than muscle. When a bulky muscle shrinks, the tissue it supported may sit a little lower, which shows as a soft fold along the jawline in some people. A doctor who pinches and lifts the skin during assessment can usually predict this. In that case lifting or skin tightening is worth discussing before, or instead of, jaw toxin.
Which toxin products appear on a jaw menu, and does the choice matter?
Jaw menus usually list an imported original, an imported purified product, Korean purified products such as Coretox, Nabota and several other Korean-made brands. Units are not directly interchangeable between products, so compare the product and units per side together rather than the unit count alone. Purified products contain less extra protein, which some doctors prefer for people planning many repeat rounds. Ask which product was used and keep the name for your next visit.