Jaw Botox Gangnam, Seoul
“Jaw botox” is a search term with three meanings: a square masseter to slim, a short chin to balance, or a sharp jaw angle to soften. RE:BERRY Gangnam sorts which one is yours with a clench test first, then relaxes the chewing muscle with botulinum toxin so an overbuilt lower face eases over weeks, steps from Gangnam Station in Seoul.
Jaw Botox
Jaw Botox
Jaw Botox Contouring · Gangnam Seoul
“Jaw botox” is a search term with three meanings: a square masseter to slim, a short chin to balance, or a sharp jaw angle to soften. RE:BERRY Gangnam sorts which one is yours with a clench test first, then relaxes the chewing muscle with botulinum toxin so an overbuilt lower face eases over weeks, steps from Gangnam Station in Seoul.
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Incheon AirportWhat is "jaw botox" actually treating, and how do I know which kind I need?
"Jaw botox" is a search term, not one procedure. It splits three ways. If a hard corner near your ear pops out when you bite down, the target is the masseter, and botulinum toxin relaxes that chewing muscle so it slims over four to eight weeks. If your jaw reads wide because the chin sits short, botox will not help and a chin plan does. If it is the jaw line that turns too sharply, a small dose can soften it, but that is a separate placement. The clench test at RE:BERRY Gangnam decides which of the three you are before any unit count comes up, and one licensed physician carries the case through review.
Effects & Progress
Effects & Progress
Relaxing the overbuilt masseter means it fires less, and a rested muscle thins the way any under-used muscle does, so a square, angular lower face eases into a softer line.
The set takes only minutes with no wound. Makeup, meals, and a same-day flight are all fine. The contour has not visibly changed yet, and it should not this early.
The masseter begins to relax and some guests notice mild, temporary chewing fatigue. Those who grind often feel the jaw quiet before any width shifts.
The main slimming phase: the rested masseter reduces and the square lower-face line softens visibly over roughly four to eight weeks. Response speed varies by individual.
Maintenance period. The effect holds four to six months before the muscle regains activity; RE:BERRY will guide the repeat interval, which tends to stretch as the muscle stays rested.
Treatment Process
Jaw Botox: From Clench Test to Four-Week Review
※ Illustrative images are AI-generated to help explain the treatment process.Effects & Progress
Effects & Progress
A wide, square lower face is often driven by an overbuilt masseter, the muscle that closes the jaw when you chew and clench. Jaw botox lowers the nerve signal telling that muscle to contract, so it fires less. Like any under-worked muscle it then undergoes gradual disuse reduction, and as the masseter thins the hard corner near the ear softens and the whole lower-face line reads less angular. The change is anatomical, from your own muscle, with nothing removed and nothing implanted.
Jaw botox reaches the goal that once meant surgery, without the surgery. Where mandibular-angle reduction cuts bone and leaves scarring and weeks of recovery, relaxing the masseter is a fine-needle procedure that acts on the muscle and takes only a few minutes across both sides. There is no incision to close, no scar, and no recovery room, so daily life and travel resume the same day. It is also reversible in effect: the muscle regains its activity in time, and if a round is deliberately kept light more can be added at review.
The left and right masseter almost never match, in size or in how hard each one clenches, and that is the reason the dose is planned per side, never mirrored. The physician reads each masseter by hand and weights the units toward the heavier side, so a lower face that started slightly lopsided can come out more balanced as the two sides settle. This per-side mapping is also what keeps the finished contour and the bite even, and any brief asymmetry while the sides catch up is reviewed and adjusted at the four-week check.
One cycle of jaw botox holds about four to six months before the masseter regains activity and the contour drifts back toward baseline. Repeating it compounds the effect: each round the muscle spends months rested and tends to come back a little smaller, so over roughly eighteen to twenty-four months of maintenance the slimming settles more durably and the interval between sessions often stretches out on its own. The physician sets that interval from how your own muscle responds, not a fixed calendar, and repeats are timed before the contour fully relaxes.
Treatment Process
Jaw Botox : From Clench Test to Four-Week Review
※ Illustrative images are AI-generated to help explain the treatment process.
What Jaw Botox Delivers Once You Have Matched It to the Right Goal
- The width that responds is muscle width: an overbuilt masseter, used less after the injection, slims from the same disuse any rested muscle shows, so a square lower face eases into a softer line from your own anatomy
- The clench test catches the mismatches early, sparing you a treatment that would do nothing when the real cause is a short chin or soft-tissue fullness with a normal chewing muscle
- The dose is written to preserve eating: a typical 50 units total leaves plenty of chewing power, and the physician deliberately holds back from chasing the fastest possible slimming
- Grinding and morning jaw ache often ease as a side effect of the same muscle relaxation, so guests who came only for the shape sometimes report sleeping through the clench for the first time in years
- Repeat cycles compound: because a rested masseter stays a little smaller each round, guests who continue over eighteen to twenty-four months often find the interval stretching out on its own
- One physician runs the clench test, marks the points, delivers every unit, and reads the four-week photos, so nothing about which of the three jaw problems you have gets handed off mid-case
| Timeline | What to Expect |
|---|---|
| The visit is over in minutes and travel the same day is fine. Nothing looks different yet, and it should not: muscle answers on a scale of weeks | |
| The masseter starts binding the toxin and relaxing. Some guests notice light, passing chewing fatigue and, for those who grind, an early quiet in the jaw before any width shifts | |
| The slimming becomes visible as the rested muscle reduces. This is the window the review is booked into, so the photos actually show something | |
| The contour reaches its fullest for the cycle. The effect then holds four to six months before the masseter regains activity and a repeat is considered |
The Three Things People Mean by "Jaw Botox" and How Each Is Actually Treated
| What you actually see | Masseter Botox (RE:BERRY Gangnam) | Chin Balancing | Jaw-Line Softening |
|---|---|---|---|
| The real cause | An overbuilt chewing muscle | A short or recessed chin throwing the jaw off balance | A jaw angle that turns too sharply |
| The clench-test tell | A firm ridge hardens near the ear when you bite | The bulk stays put; the chin sits back on profile | The angle is prominent but not muscular under the fingers |
| What is used | Botulinum toxin into the masseter | Filler or a projection plan, not botox | A small, targeted botox dose in a different spot |
| How the change arrives | Gradually, over 4-8 weeks as muscle rests | Immediately, by adding projection | Gradually, as a small muscle relaxes |
| Functional side benefit | Eases grinding and jaw tension | None | Minor |
| Sessions | One, repeated every 4-6 months at first | One, topped up as it resorbs | One, repeated with the cycle |
| When it is the wrong pick | The width stays soft on a clench | The chin is already balanced | The whole muscle, not just the angle, is overbuilt |
Why This Matters
The single most useful thing a consultation does for "jaw botox" is separate the search term into its real parts. A great many guests type those two words meaning a square, muscular lower face; a smaller group means a jaw that photographs wide because the chin is set back; another means only the sharp corner of the angle. Botox answers the first and part of the third, and does nothing for the second. Sorting which one you have is exactly what the clench test at RE:BERRY Gangnam is for, and it happens before anyone counts units.
Unit counts get quoted online as if one number fits every jaw, and they do not. A typical average case runs around 50 units split across both masseters, but a heavier or long-clenching muscle can call for more, and a delicate one for less. The physician reads the muscle by hand and by how it built up against your bite, then writes the dose to that, holding back enough that eating stays normal. Speed of visible slimming comes second to a jaw that still chews.
KHIDI's 2025 international patient survey found 41.4% of respondents rank keeping the same doctor throughout as their leading criterion. At RE:BERRY Gangnam the physician who sorts your case at the clench test is the one who marks the points, places every unit, and reads the four-week photos, so the person who decided which of the three jaw problems you have is the one who treats it.
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Jaw Botox at RE:BERRY Gangnam: What a Plan Covers
Your Medical Director
Dr. Yoon-Gon Ryu
- Medical Director, RE:BERRY Aesthetic Clinic Gangnam — Korean MOHW Medical License No.131644
- Manufacturer-appointed KOL invited to teach injection and energy-device technique to Korean peers
- Regular Member, Korean Academy of Aesthetic Medicine
- Co-manages every case with Dr. Yejin Oh (Korean MOHW Medical License No.144238)
- Featured in Authority Magazine (2026)
Medically reviewed by Dr. Yoon-Gon Ryu, CEO / Medical Director, RE:BERRY
A Fourteen-Thousand-Square-Foot Hush Above Gangnam-daero
Step past the black gallery facade and the bustle of Gangnam-daero falls away. Fourteen thousand square feet of hushed corridors, marble installations, a cascading water feature and fully enclosed consultation suites — arranged so you rarely cross paths with another guest, because our reservation-only diary keeps every hour deliberately underbooked.
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The Evidence Behind Slimming the Masseter
The mechanism is muscle disuse, not tissue removal. Botulinum toxin type A blocks nerve terminals from releasing acetylcholine, the messenger that orders a muscle to contract. With that signal muted, the masseter fires less, and a muscle that fires less thins the way any rested muscle does. That is why the lower face narrows over weeks, not on the table, and why the change is anatomical: the muscle itself gets smaller.
The masseter application has its own evidence, separate from the broad wrinkle literature. A Cochrane systematic review pooling the controlled trials on botulinum toxin for masseter hypertrophy found consistent reductions in muscle thickness and lower-face width, treating masseter narrowing as a distinct, measurable outcome. An early prospective series using ultrasound to track masseter thickness before and after injection documented the same reduction objectively, which is the physical basis for the gradual slimming a guest actually sees. The dose the physician at RE:BERRY Gangnam writes to your muscle rests on this: enough to reduce, held back enough to chew.
Al-Muharraqi MA, Fedorowicz Z, Al Bareeq J, Al Bareeq R, Nasser M. Botulinum toxin for masseter hypertrophy. Cochrane Database Syst Rev. 2009;(1):CD007510. doi:10.1002/14651858.CD007510.pub2
Kim NH, Chung JH, Park RH, Park JB. The use of botulinum toxin type A in aesthetic mandibular contouring. Plast Reconstr Surg. 2005;115(3):919-930. doi:10.1097/01.prs.0000153236.79775.a0
Duration and repeatability matter for anyone planning cycles from abroad. Comparative and noninferiority work on facial botulinum toxin has characterized how a formulation performs across repeated sessions, and the wider safety record for repeated aesthetic injection is well documented across controlled trials. A separate line of work on lower-face and neck injection technique informs how points are spaced to keep the effect local to the chewing muscle. Together these support the four-to-six-month cycle RE:BERRY Gangnam plans and the way repeat rounds tend to compound as the masseter stays rested.
Sattler G, Callander MJ, Grablowitz D, et al. Noninferiority of incobotulinumtoxinA, free from complexing proteins, compared with another botulinum toxin type A in the treatment of glabellar frown lines. Dermatol Surg. 2010;36(Suppl 4):2146-2154. doi:10.1111/j.1524-4725.2010.01706.x
Wu WTL. Microbotox of the lower face and neck: evolution of a personal technique and its clinical effects. Plast Reconstr Surg. 2015;136(5 Suppl):92S-100S. doi:10.1097/PRS.0000000000001827
Questions International Guests Ask About Jaw Botox in Gangnam
"Jaw botox" seems to mean different things online. Which one is real?
They are all real, they just are not the same procedure. Most people mean an overbuilt masseter making the lower face square, and botox slims that by relaxing the chewing muscle. Some mean a jaw that looks wide because the chin sits back, and that is a chin question botox cannot answer. A few mean only the sharp corner of the jaw angle, which a small, differently placed dose can soften. The clench test at RE:BERRY Gangnam decides which of the three describes you before any dose is planned.
How do I tell whether my wide jaw is muscle or something else?
Bite down hard and press just in front of and below your ear. If a firm ridge bulges up under your fingers and softens when you relax, that is masseter muscle, and it responds to botox. If the fullness stays soft whether you clench or not, it is fat or skin, which botox does not treat. If your face reads wide mainly on profile because the chin is short, the width is a projection issue. The physician does this same test by hand at the consultation.
How many units of botox does a jaw need?
A typical average case runs around 50 units in total, split across both masseters, but there is no single correct number. A heavier or long-clenching muscle can need more, and a smaller one less. Forum figures are worth little here; the physician feels the muscle, checks how your teeth meet, and writes the dose to your own jaw, deliberately leaving enough chewing power intact.
Will I still be able to eat normally afterward?
Yes. The dose is set to ease the masseter, not switch it off, so plenty of chewing strength stays. A minority of guests feel mild chewing fatigue in the first week or two as the muscle adjusts, and it fades on its own. Dinner the same evening is fine; the only suggestion is going gentle on very hard or chewy food for the first few days.
When will I actually see my jaw look slimmer?
On a muscle's clock, not an injection's. Relaxation begins around one to two weeks in, and the visible slimming develops over roughly four to eight weeks as the rested masseter reduces. If you are traveling for a wedding or a shoot, time the treatment so the change lands in the two months afterward, well after you fly home.
How long does jaw botox last, and does it build up over time?
One cycle holds about four to six months before the muscle regains activity. It does compound: because the masseter spends those months rested, it tends to come back a little smaller each round. Guests who continue over roughly eighteen to twenty-four months often find they can stretch the interval as the muscle stays reduced, which the physician judges from how yours responds.
I searched jaw botox but I think I actually need a chin. What then?
That is a common outcome at the clench test, and it is exactly why the test comes first. A jaw can photograph wide because the chin is set back, in which case adding botox to the masseter changes nothing you dislike. The physician will say so plainly and map a chin plan instead, or treat the muscle that does respond and stage the chin separately if both play a part.
Does jaw botox help with teeth grinding as well?
Often, yes, as a side effect of the same relaxation. Grinding is the masseter clenching involuntarily, usually at night, and lowering its contraction force quiets the grind and the morning jaw ache. Many guests who came only for the shape report better sleep and less tension before the width even shifts, because the functional relief tends to arrive first.
Does it hurt, and how deep does the needle go?
Most guests describe brief pinches, helped by a numbing cream applied beforehand, and few call it real pain. A fine needle reaches the thick belly of the masseter, roughly a centimeter below the skin, at three to five marked points per side. The whole set is over in minutes, there is nothing to bandage, and the physician confirms the placement is even across both sides before you sit up.
Can jaw botox make my face uneven or change my smile?
Your two masseters are rarely identical, so an identical dose to each can leave a mismatch; the physician maps per side from your own jaw to avoid that. The points sit in the lower-outer belly of the muscle, kept clear of the parotid gland and the muscles that shape a smile, so the effect stays on the chewing muscle. Any brief asymmetry as the two sides settle is reviewed and adjusted at the four-week check.
Is there downtime, and can I fly home the same day?
There is no wound and no recovery room, so makeup, meals, and a same-day flight out of Incheon are all fine, with no altitude or cabin-pressure restriction. For the first stretch the physician suggests not lying flat right away, skipping jaw massage, and going easy on very hard food: light precautions, not recovery. The result is the only thing that unfolds slowly.
Who should not get jaw botox?
It is not planned during pregnancy or breastfeeding, where the physician suggests waiting until about three months after weaning, or for certain neuromuscular conditions. It also will not help a jaw whose width comes from fat, skin, or bone, which the clench test screens for. Where the width is not muscle, the physician says so directly and stops there.
How do I book jaw botox as a foreign visitor?
Message RE:BERRY on WhatsApp with a clear front and side photo and your travel dates. A coordinator replies in English within a few hours to hold a physician slot; the clinic is reservation-only for international guests and staff interpreters cover eight languages. The clench test, planning, and injection all fit into one visit, and follow-up continues on WhatsApp with a photo review at four weeks.
Where is the clinic, and how do I get there from Gangnam Station?
RE:BERRY sits in KI Tower on Gangnam-daero, a two-minute walk from Gangnam Station Exit 10 on Seoul Metro Line 2. From Incheon Airport it is roughly 45 to 60 minutes by AREX plus subway or by direct taxi. Being steps from the station means a jaw botox visit slots cleanly around shopping and dining in Gangnam, and the same-day departure keeps a short trip on schedule.
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Every device at RE:BERRY is MFDS-certified and manufacturer-verified. We never use counterfeit or grey-market equipment.
Book Your Jaw Botox Consultation in Gangnam
Send RE:BERRY a front and side photo on WhatsApp with your travel dates, and a coordinator replies within a few hours to hold a physician slot. The visit starts with the clench test that sorts which of the three jaw problems you actually have, the physician writes the dose to your own muscle, and the case is reviewed with photos at four weeks. Nothing is scheduled until you confirm.
Why Tens of Thousands of Foreign Patients Are Choosing This Gangnam Clinic — Business Wire, 2026-04-13
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Science Jaw botox: peer-reviewed references
Slimming the masseter with botulinum toxin rests on evidence specific to the muscle, not borrowed from the wrinkle literature. A Cochrane systematic review of the controlled trials on botulinum toxin for masseter hypertrophy (Al-Muharraqi 2009) treated reduction in masseter thickness and lower-face width as a distinct, measurable outcome. Kim (2005) documented narrowing of the lower face after injection for mandibular contouring, establishing muscle reduction as the mechanism behind softening a square jaw. Comparative and noninferiority work on facial botulinum toxin (Sattler 2010) characterized how a formulation performs across repeated sessions, and technique-focused work on lower-face and neck injection (Wu 2015) informs how points are spaced to keep the effect on the chewing muscle. Together these support the individualized dose and the four-to-six-month cycle planned at RE:BERRY Gangnam.
- Al-Muharraqi MA, Fedorowicz Z, Al Bareeq J, Al Bareeq R, Nasser M. Botulinum toxin for masseter hypertrophy. Cochrane Database Syst Rev. 2009;(1):CD007510. doi:10.1002/14651858.CD007510.pub2
- Kim NH, Chung JH, Park RH, Park JB. The use of botulinum toxin type A in aesthetic mandibular contouring. Plast Reconstr Surg. 2005;115(3):919-930. doi:10.1097/01.prs.0000153236.79775.a0
- Sattler G, Callander MJ, Grablowitz D, et al. Noninferiority of incobotulinumtoxinA, free from complexing proteins, compared with another botulinum toxin type A in the treatment of glabellar frown lines. Dermatol Surg. 2010;36(Suppl 4):2146-2154. doi:10.1111/j.1524-4725.2010.01706.x
- Wu WTL. Microbotox of the lower face and neck: evolution of a personal technique and its clinical effects. Plast Reconstr Surg. 2015;136(5 Suppl):92S-100S. doi:10.1097/PRS.0000000000001827
These references shape how jaw botox is planned at RE:BERRY's Gangnam aesthetic clinic: a hands-on clench test and occlusion check to confirm the lower-face width is masseter muscle before any injection; a per-side dose set to the individual muscle and held back enough to preserve normal chewing; and a photographic review at four weeks, when the slimming has usually become visible, under the same licensed physician. This information is for educational purposes only and is not medical advice.
How to Find RE:BERRY Gangnam
2 minutes from Gangnam Station Exit 10. B1–B2, KI Tower — the building with the all-black entrance you can't miss.
RE:BERRY Clinic Gangnam
B1–B2, KI Tower, 69-gil 8, Gangnam-daero, Seocho-gu, Seoul
서울시 서초구 강남대로69길 8, 지하1·2층 (KI타워)
Also available at: Myeongdong · Incheon Airport