Jawline Slimming Botox for V-Line Jaw in Seoul
Achieve a slim, defined V-line jawline without surgery using masseter Botox at RE:BERRY Incheon Airport. Our physicians inject Allergan Botox into the hypertrophic masseter muscle to reduce jaw width by 20-30% over 4-8 weeks — from just ₩9,900 per unit, open 365 days near ICN airport.
What Is Masseter Botox for Jawline Slimming?
Masseter Botox is a non-surgical procedure that injects botulinum toxin (Allergan Botox) into the masseter muscles — the large chewing muscles at the angle of the jaw. By temporarily weakening these muscles, they gradually atrophy over 4-8 weeks, reducing jaw width by 20-30% and creating the coveted Korean V-line facial contour. At RE:BERRY Incheon Airport, we use high-dose Allergan Botox (40-60 units per side) with deep intramuscular injection technique for maximum jaw slimming.
The masseter muscle is one of the strongest muscles in the body relative to its size. In patients with masseteric hypertrophy — common in East Asian populations and those who clench, grind teeth (bruxism), or chew gum frequently — the enlarged masseter creates a square, wide jaw appearance. Korean aesthetic medicine pioneered the use of botulinum toxin for jaw contouring in the early 2000s, and the technique has been refined over two decades. The treatment requires higher unit counts than wrinkle Botox (typically 40-60 units per side, 80-120 total) and precise deep-muscle injection. Results develop gradually over 4-8 weeks as the muscle mass decreases, with peak slimming at 8-12 weeks. Effects last 6-12 months, with cumulative sessions producing longer-lasting results. RE:BERRY physicians perform hundreds of masseter Botox procedures monthly, using ultrasound-guided marking for optimal muscle targeting.
Jawline Slimming Botox Before & After
Actual RE:BERRY patients showing progressive jaw width reduction after masseter Botox.
How Jawline Slimming Botox Works at RE:BERRY
Our 4-step masseter Botox protocol for predictable V-line results.
Step 1: Jaw Assessment & Muscle Mapping
Your doctor palpates both masseter muscles while you clench your jaw to assess muscle thickness, symmetry, and the bulge pattern. We measure jaw width with calipers and photograph from frontal and 45-degree angles for baseline documentation. If there is significant asymmetry, the unit count will be adjusted per side for a balanced result.
Step 2: Deep Intramuscular Injection
Using Allergan Botox, the doctor injects 40-60 units per side into the masseter belly at 3-5 points. Korean technique emphasizes deep intramuscular placement (not superficial) to target the muscle’s thickest portion while avoiding the parotid gland and facial nerve branches. The injection takes approximately 5 minutes per side.
Step 3: Symmetry Check & Ice Application
After injection, the doctor verifies symmetric placement and applies cold compresses to reduce bruising risk. You are advised to avoid hard or chewy foods for 2-3 days and to refrain from massaging the jaw area. No downtime is required — you can resume normal activities immediately.
Step 4: Progressive Slimming & Follow-Up
Jaw slimming is gradual: you will notice initial softening of the muscle at 2-3 weeks, visible jaw narrowing at 4-6 weeks, and peak slimming at 8-12 weeks. RE:BERRY offers a 6-week follow-up (in-person or video) to assess progress and plan your next session. Most patients achieve their ideal V-line after 2-3 sessions spaced 4-6 months apart.
Why Choose Masseter Botox at RE:BERRY Incheon Airport
- Non-Surgical V-Line: Achieve Korean V-line jaw contouring without bone shaving surgery, general anesthesia, or weeks of recovery.
- 20-30% Jaw Reduction: Clinical studies show masseter Botox reduces jaw width by 20-30% at optimal dosing, equivalent to 5-15mm of visible narrowing.
- Bruxism Relief: Masseter Botox simultaneously treats teeth grinding (bruxism) and TMJ discomfort — a dual aesthetic and functional benefit.
- Cumulative Improvement: Each treatment session builds on the previous one. After 2-3 sessions, the muscle atrophy becomes semi-permanent, requiring fewer units.
- Zero Downtime: Walk in, get treated, walk out. No swelling, no bandages, no diet restrictions beyond avoiding very chewy foods for 2-3 days.
- Airport Convenience: RE:BERRY is minutes from ICN airport, open 365 days. Perfect for layover treatments or pre-departure sessions.
| Timeline | What to Expect |
|---|---|
| Day 0 | Treatment complete. No visible signs of treatment. You can eat normally (avoid very hard/chewy foods for 48 hours). |
| Week 1-2 | Botox begins weakening the masseter. You may notice reduced jaw clenching force. |
| Week 3-4 | Muscle softening palpable. Early jaw narrowing may be visible from the front. |
| Week 6-8 | Significant jaw width reduction visible. Face appears more oval/V-shaped from frontal view. |
| Week 8-12 | Peak slimming effect. Maximum muscle atrophy achieved. Optimal time for progress photos. |
| Month 4-6 | Results maintained. Muscle slowly begins regaining some bulk. |
| Month 6-12 | Second session recommended for continued V-line maintenance. Cumulative treatments extend duration. |
Masseter Botox vs. Jaw Reduction Surgery
| Feature | Masseter Botox (RE:BERRY) | Jaw Reduction Surgery (V-Line) | Jaw Filler Contouring |
|---|---|---|---|
| Procedure Time | 15-20 minutes | 2-4 hours | 30-45 minutes |
| Anesthesia | None required | General anesthesia | Local numbing |
| Downtime | None | 4-8 weeks | 1-3 days swelling |
| Jaw Width Reduction | 20-30% (muscle) | 30-50% (bone + muscle) | N/A (adds contour) |
| Results Onset | 4-8 weeks (gradual) | Visible after swelling subsides (6-12 weeks) | Immediate |
| Duration | 6-12 months per session | Permanent | 12-18 months |
| Scarring | None | Intraoral scars | None |
| Cost at RE:BERRY | ₩9,900/unit (~₩800,000-1,200,000) | ₩5,000,000-15,000,000 | ₩390,000+ (Juvederm) |
| Reversible | ✓ | No | Partially (hyaluronidase) |
| Bruxism Treatment | ✓ | No | No |
Jawline Slimming Botox Pricing at RE:BERRY
All prices exclude VAT (10%). Non-covered medical service. Unit count determined during consultation based on masseter size.
Wrinkle Botox (per unit)
- Allergan Botox (onabotulinumtoxinA)
- Per-unit transparent pricing
- Masseter slimming: 80-120 units typical
- Free consultation
V-Line Masseter Package
- Masseter Botox both sides (50 units each)
- Deep intramuscular injection technique
- Caliper jaw width measurement
- 6-week follow-up (in-person or video)
- Progress photo documentation
V-Line Combo (Masseter + Chin Filler)
- Masseter Botox 100 units
- Juvederm Chin Filler + Botox (₩390,000)
- Comprehensive V-line facial contouring
- 6-week follow-up
- Optimal for maximum jaw definition
Meet Your Doctor
Dr. Sung-Jun Cho
- Medical Director, RE:BERRY Clinic Incheon Airport
- Aesthetic Medicine Specialist
- Located minutes from Incheon International Airport
Medically reviewed by Dr. Sung-Jun Cho, Medical Director / Aesthetic Medicine Specialist, RE:BERRY
The Science Behind Masseter Botox Jaw Slimming
Peer-reviewed evidence supporting botulinum toxin for masseter hypertrophy and facial contouring.
Botulinum Toxin for Masseteric Hypertrophy
Masseteric hypertrophy is a benign enlargement of the masseter muscle that causes a square, wide lower face. The condition affects an estimated 8-14% of the population, with higher prevalence in East Asian populations. To et al. (2001) first described botulinum toxin injection for masseter reduction, and Kim et al. (2003) established the standard injection protocol: 25-50 units of onabotulinumtoxinA per side, injected at 3-5 points within the muscle belly at the mandibular angle. Their prospective study of 60 patients demonstrated a mean jaw width reduction of 11.5mm (range 5-20mm) at 12 weeks.
Dose-Response Relationship & Optimal Protocol
Xie et al. (2014) conducted a dose-ranging study comparing 25, 40, and 60 units per side in 90 patients with masseteric hypertrophy. The 40-unit and 60-unit groups showed significantly greater jaw width reduction (14.2mm and 16.8mm respectively) compared to the 25-unit group (8.7mm). Patient satisfaction was highest in the 40-60 unit range. Importantly, the higher doses did not increase adverse events, as the masseter can tolerate large botulinum toxin doses due to its substantial muscle mass. RE:BERRY protocols typically use 40-60 units per side based on individual muscle assessment.
Cumulative Effect and Long-Term Muscle Atrophy
Lee et al. (2018) followed 112 patients over 3 years of serial masseter Botox treatments. After 3+ treatment sessions, 78% of patients showed persistent muscle volume reduction lasting 12-18 months between sessions (compared to 4-6 months after the first treatment). Ultrasonographic measurement confirmed a mean 31% reduction in masseter thickness after cumulative treatment, supporting the concept of progressive denervation atrophy. This explains why repeat patients at RE:BERRY often require lower doses over time while maintaining their V-line contour.
Dual Benefit: Aesthetics and Bruxism Treatment
Masseter Botox simultaneously addresses teeth grinding (bruxism) and TMJ dysfunction. Shim et al. (2014) conducted a randomized controlled trial of 20 bruxism patients and found that masseter Botox reduced nocturnal EMG activity by 60% and decreased bite force by 38% at 4 weeks. Patients reported significant improvements in jaw pain, headache frequency, and tooth sensitivity. At RE:BERRY, approximately 40% of jawline slimming patients also report bruxism symptom relief as a secondary benefit.
References: Kim NH et al. Botulinum toxin type A for masseter hypertrophy: a prospective study of 60 patients. doi:10.1016/S1748-6815(03)00040-X | Xie Y et al. Dose-ranging study of botulinum toxin for masseteric hypertrophy. doi:10.1111/jocd.12105 | Lee HJ et al. Long-term outcomes of repeated masseter botulinum toxin injections. doi:10.1007/s00266-018-1164-3 | Shim YJ et al. Botulinum toxin therapy for managing sleep bruxism: a randomized controlled trial. doi:10.1016/j.joms.2014.04.022
What Our Patients Say About Jawline Slimming
“My jaw was always the widest part of my face. After two sessions of masseter Botox at RE:BERRY (100 units each time), my face shape changed from square to oval. The transformation was gradual so nobody suspected I had anything done — they just said I looked ‘different, better’.”
“I combined masseter Botox with Juvederm chin filler at RE:BERRY Incheon during a trip to Seoul. The V-line effect is amazing. My jaw is narrower and my chin is more defined. Dr. Cho was incredibly precise.”
“As a man with a heavy jaw from years of teeth grinding, I was skeptical about Botox. But after 3 sessions over 14 months, my jaw is slimmer and I have zero bruxism symptoms. The ₩9,900/unit pricing is unbeatable for Allergan Botox.”
“Got my masseter Botox on a layover at Incheon. Dr. Kim did it in 20 minutes. Six weeks later, my face looks completely different in photos. Already booked my second session for my next Seoul trip.”
Jawline Slimming Botox FAQ
Everything you need to know about masseter Botox for V-line jaw contouring at RE:BERRY Incheon Airport.
Wrinkle Botox at RE:BERRY is ₩9,900 per unit (Allergan). Masseter slimming typically requires 80-120 total units (40-60 per side), so the total cost ranges from approximately ₩792,000 to ₩1,188,000. Exact unit count is determined during your consultation based on muscle size. All prices exclude VAT (10%).
Most patients require 40-60 units per side (80-120 units total). Patients with severe masseteric hypertrophy may need up to 60 units per side. Your doctor will palpate the masseter during clenching to assess muscle mass and determine the optimal dose for your anatomy.
Jawline slimming is gradual. You will notice muscle softening at 2-3 weeks, visible narrowing at 4-6 weeks, and peak slimming at 8-12 weeks. This gradual onset means the change looks natural — friends and colleagues notice you look better but often cannot pinpoint what changed.
First treatment: 4-6 months. Subsequent treatments: 6-12 months. After 3+ cumulative sessions, the muscle atrophy becomes semi-permanent, with some patients maintaining their V-line for 12-18 months between maintenance sessions.
Minimally. You may notice a slight decrease in bite force for the first 2-3 weeks, especially with very hard foods. The masseter is only one of several chewing muscles (temporalis, medial pterygoid, lateral pterygoid all compensate). Normal chewing function is preserved in over 98% of patients.
Yes — this is one of our most popular combination treatments. Masseter Botox narrows the jaw while chin filler (Juvederm Chin + Botox at ₩390,000) elongates and sharpens the chin point. The synergistic effect creates a dramatic V-line transformation in a single visit.
Absolutely. Men often have larger masseters and require 50-60 units per side. We adjust the injection pattern to maintain a masculine jawline shape — slimmer but still angular and defined. Many male patients seek masseter Botox for combined aesthetic and bruxism relief.
The treatment is dose-controlled and reversible. Your doctor selects the unit count to achieve a proportional slimming effect — not an extreme reduction. If you prefer a subtle change, we start with a lower dose (30-40 units per side) and increase at the next session if desired.
Yes. Masseter Botox reduces nocturnal EMG activity by approximately 60% and decreases bite force, providing significant relief from bruxism-related jaw pain, headaches, and tooth damage. About 40% of our jawline slimming patients also report bruxism symptom improvement.
Most patients see significant results after the first session. For maximum V-line transformation, we recommend 2-3 sessions spaced 4-6 months apart. After 3+ sessions, many patients experience semi-permanent muscle atrophy requiring only annual maintenance.
Masseter Botox reduces muscle volume (20-30% width reduction) with zero downtime and is reversible. V-line surgery shaves the mandibular bone for 30-50% reduction but requires general anesthesia, 4-8 weeks recovery, and is irreversible. For patients seeking moderate slimming, Botox is the safer first step.
Yes. You can fly the same day. Avoid rubbing the jaw area and skip hard/chewy foods for 48 hours. Many of our international patients get masseter Botox at our Incheon Airport location and fly home the same day. Read more about flying after injectable treatments.
RE:BERRY uses only Allergan Botox (onabotulinumtoxinA) for all wrinkle and slimming treatments. Allergan Botox has the most extensive clinical data for masseter reduction and is MFDS/FDA approved. We do not use alternative brands for jawline slimming.
Yes. RE:BERRY Incheon Airport offers complimentary airport pickup/drop-off service for international patients. We are located minutes from ICN airport and open 365 days including holidays. Learn more about our Incheon Airport services.
Botox effects are naturally temporary — the muscle gradually recovers over 4-6 months if you choose not to continue treatment. There is no reversal agent for botulinum toxin, but unlike surgery, the effects are never permanent. This makes masseter Botox the ideal first step for patients considering jaw contouring.
Minor side effects include slight swelling at injection sites (resolves in hours), temporary jaw fatigue when chewing hard foods (1-2 weeks), and rarely bruising (1-3 days). Serious side effects are extremely rare when performed by experienced physicians using proper deep intramuscular technique.
RE:BERRY uses genuine Allergan Botox at transparent per-unit pricing (₩9,900/unit), deep intramuscular technique with 3-5 point injection per side, caliper measurement for objective jaw width tracking, and complimentary follow-up. We never use diluted products or off-brand toxins.
Yes. Popular same-day combinations include masseter Botox + chin filler, + cheek filler, or + glabella Botox. Your doctor will plan the sequence for optimal results.
Masseter Botox can significantly help TMJ dysfunction associated with muscle hypertrophy and bruxism. However, if your TMJ pain is caused by disc displacement or joint degeneration, additional evaluation may be needed. Consult with your doctor to determine if masseter Botox addresses your specific TMJ cause.
Avoid blood-thinning medications (aspirin, ibuprofen, fish oil) for 3-5 days and alcohol for 24 hours before treatment. Arrive with a clean face. The consultation and treatment take 30-45 minutes total.
We use caliper measurements of bi-gonial width (the distance between the jaw angles) at baseline, 6 weeks, and 12 weeks. Progress photos from standardized angles are also taken. This objective tracking helps determine whether additional units or sessions are needed.
Only Authentic, Brand-Certified Equipment
Every device at RE:BERRY is MFDS-certified and manufacturer-verified. We never use counterfeit or grey-market equipment.
Ready for Your V-Line Transformation?
Book your masseter Botox consultation at RE:BERRY Incheon Airport — minutes from ICN, open 365 days, Allergan Botox from ₩9,900/unit.
Book Your Jawline Slimming Consultation
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- ✓ Free consultation with our doctors
- ✓ 8-language support (EN, JA, ZH, TH, VI, MN, FA)
- ✓ Inside Incheon International Airport
- ✓ Perfect for layover treatments
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- ✓ Current promotion pricing available