
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.
2 Aesthetic Medicine Specialists perform 100% of masseter Botox at RE:BERRY Incheon Airport — Dr. Sung-Jun Cho (License 138858) and Dr. Dong-Young Kim (License 147291), each performing 30+ jawline slimming procedures monthly with caliper-measured width tracking.
100% physician continuity at RE:BERRY Incheon Airport — the same doctor who palpates your masseter muscle during consultation injects every point. Dr. Cho or Dr. Kim personally maps 3-5 injection points per side based on muscle thickness, unlike chain clinics where a different physician may perform the injection.
RE:BERRY Incheon Airport’s physicians have performed 5,000+ masseter Botox procedures combined — both hold KDLA certification and Korean Academy of Aesthetic Medicine membership. Dr. Cho uses caliper measurement at baseline, 6-week, and 12-week follow-ups to objectively track 20-30% jaw width reduction.
RE:BERRY Incheon Airport’s Smooth Jawline Package costs ₩160,000 ($123 USD), 75-85% less than comparable US treatments.
| Treatment | RE:BERRY Incheon | US Average | Savings |
|---|---|---|---|
| Smooth Jawline Package | ₩160,000 ($123) | $500-1,200 | 75-85% |
| Chin Filler + Botox | ₩390,000 ($300) | $1,000-2,500 | 70-80% |
| Wrinkle Botox (1 area) | ₩9,900 ($7.60) | $200-600 | 96% |
RE:BERRY Incheon Airport’s complete V-line protocol costs ₩160,000-550,000 depending on combination, 70-85% less than US pricing.
| Protocol | Price | Includes |
|---|---|---|
| Basic V-Line | ₩160,000 | Jawline Botox + Chin Filler |
| Enhanced V-Line | ₩390,000 | Juvederm Chin + Chin Botox |
| Premium V-Line | ₩550,000+ | Jawline + Chin + Cheek Filler |
₩0 hidden fees at RE:BERRY Incheon Airport — the ₩160,000 Smooth Jawline Package includes consultation, numbing, LENA chin filler 1cc, jawline Botox, chin Botox, and 30-day remote aftercare.
| Item | RE:BERRY | Typical Clinic |
|---|---|---|
| Consultation | Free | $50-150 |
| Airport pickup | Free round-trip | Not available |
| Follow-up monitoring | 30-day remote | In-person only |
RE:BERRY Incheon Airport’s masseter Botox achieves 20-30% jaw width reduction without surgery or downtime.
| Feature | Masseter Botox | V-Line Surgery |
|---|---|---|
| Width reduction | 20-30% | 30-50% |
| Downtime | Zero | 4-8 weeks |
| Anesthesia | Topical only | General |
| Reversible | Yes (4-6 months) | No |
| Price | ₩160,000 | ₩5,000,000+ |
70% of RE:BERRY Incheon Airport’s V-line patients combine masseter Botox with chin filler in a single 30-minute visit.
| Option | Price | Result |
|---|---|---|
| Masseter Botox only | ₩29,000/50U | Jaw narrowing 20-30% |
| Smooth Jawline Package | ₩160,000 | Jaw narrowing + chin definition |
| Premium V-Line | ₩390,000 | Juvederm chin + full jawline |
RE:BERRY Incheon Airport offers 4 V-line approaches from non-invasive to combined protocols.
| Treatment | Price | Mechanism | Results In |
|---|---|---|---|
| Masseter Botox | ₩29,000/50U | Muscle atrophy | 4-6 weeks |
| Chin Filler | ₩390,000 | Volume addition | Immediate |
| Slim Contour Injection | ₩69,000/10cc | Fat dissolution | 2-4 weeks |
RE:BERRY Incheon Airport uses caliper measurement for objective jaw width tracking — a precision step chain clinics skip.
| Feature | RE:BERRY (Boutique) | Large Chain Clinic |
|---|---|---|
| Measurement method | Caliper + photos | Visual only |
| Same surgeon throughout | 100% | ~40% |
| Follow-up tracking | 6-week + 12-week | On request |
| Airport service | Free pickup | Not available |
RE:BERRY Incheon Airport limits to 3-4 jawline patients per physician daily versus 15-20+ at volume centers, enabling thorough muscle assessment.
| Feature | RE:BERRY | High-Volume Center |
|---|---|---|
| Consultation time | 60-90 min | 20-30 min |
| Injection technique | 3-5 points/side mapped | Standard template |
| Custom aftercare plan | Yes, documented | Standard protocol |
92% of RE:BERRY Incheon Airport’s jawline Botox patients fly home the same day — masseter Botox requires zero downtime. Avoid rubbing the jaw area and skip hard/chewy foods for 48 hours. Cabin pressure has no effect on botulinum toxin in the deep masseter muscle. See flying after injectable treatments for details.
RE:BERRY Incheon Airport reports minimal masseter Botox side effects — slight swelling at injection sites (resolves in hours), temporary jaw fatigue with hard foods for 1-2 weeks in 15% of patients, and bruising in under 3% of cases. Over 98% of patients maintain normal chewing function throughout treatment.
RE:BERRY Incheon Airport completes jawline Botox in under 2 hours total — 15-minute airport pickup, 15-minute consultation with caliper measurement, 10-minute injection, and 15-minute return to ICN Terminal 1. A 3-hour layover is sufficient with no overnight stay required. Cheek lifting can be combined in the same visit.
RE:BERRY Incheon Airport provides 90-day jawline Botox aftercare — 30-day WhatsApp/LINE remote monitoring, plus caliper-measured progress photos at 6 and 12 weeks. 85% of follow-up questions receive responses within 2 hours, with customized recommendations for maintenance sessions every 4-6 months.
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
Fill out the form and our multilingual team will confirm within 2 hours via your preferred contact method.
- ✓ Free consultation with our doctors
- ✓ 8-language support (EN, JA, ZH, TH, VI, MN, FA)
- ✓ Inside Incheon International Airport
- ✓ Perfect for layover treatments
- ✓ Visa / Mastercard accepted
- ✓ Current promotion pricing available



