How Does Botox Slim the Jawline? — Masseter Botox for V-Line Contouring at RE:BERRY Incheon Airport
How does Botox slim the jawline? Masseter Botox 100 units at ₩99,000 (regular ₩990,000) at RE:BERRY Incheon Airport shrinks the masseter muscle by 20-30% over 4-8 weeks, creating a slimmer V-line jawline without surgery. Korean hyperhidrosis Botox 100 units ₩99,000 also available. Combine with Very Slim Contour Injection 10cc at ₩69,000 for enhanced jaw contouring. Open 365 days with complimentary airport pickup from ICN Terminal 1.
How Does Botox Slim the Jawline?
Botox slims the jawline by injecting 50-100 units of botulinum toxin into each masseter muscle, blocking nerve signals that cause the muscle to contract, resulting in 20-30% muscle volume reduction over 4-8 weeks and creating a slimmer V-line jaw shape — available at RE:BERRY Incheon Airport for ₩99,000 per 100 units.
Botox jawline slimming — medically known as masseter reduction using botulinum toxin — is one of the most popular non-surgical facial contouring procedures in Korea. The mechanism is straightforward: Botox blocks acetylcholine release at the neuromuscular junction of the masseter muscle, reducing its contractile activity. Over 4-8 weeks, the muscle undergoes disuse atrophy, physically shrinking in volume by 20-30%. This creates a visible narrowing of the lower face, transforming a square or wide jawline into the coveted V-line shape. At RE:BERRY Incheon Airport, Korean masseter Botox is available for ₩99,000 per 100 units — a fraction of the $800-1,500 charged in the US for equivalent treatment. The procedure takes just 10-15 minutes. Dr. Cho Sung-Jun, Aesthetic Medicine Specialist and Head Director, performs every jawline slimming Botox injection using precise anatomical mapping to ensure symmetrical, natural-looking results. For patients seeking enhanced jaw contouring beyond what Botox alone achieves, RE:BERRY offers combination protocols. The jawline slimming Botox can be paired with the Very Slim Contour Injection 10cc (₩69,000) to address both muscular and fatty components of jawline width. The Allergan Botox jawline option is available upon request for patients who prefer specific brands. The Smooth Jawline Package (₩160,000) combines LENA chin filler 1cc with Korean jawline and chin Botox for complete lower-face sculpting. RE:BERRY Incheon Airport operates 365 days with complimentary airport pickup, making jawline slimming Botox accessible even during a brief layover at Incheon.
How Botox Slims the Jawline — Step-by-Step at RE:BERRY Incheon Airport
A precision jawline slimming Botox protocol customized to your facial structure and masseter muscle size.
Masseter Muscle Assessment & Jaw Analysis
Understanding how Botox slims the jawline starts with accurate muscle assessment. Dr. Cho Sung-Jun asks you to clench your jaw while palpating the masseter muscle to evaluate its thickness, symmetry, and bulk. Ultrasound measurement may be used for precise thickness assessment — typical masseter thickness ranges from 8-16mm. Patients with thicker masseters (12mm+) see the most dramatic jawline slimming results. Your facial bone structure is also evaluated, since Botox slims muscular jawlines but cannot change bone width. Asymmetry is noted: 70% of patients have unequal masseter sizes requiring different unit doses per side.
Strategic Botox Injection into the Masseter
The injection technique is critical to how Botox slims the jawline effectively and safely. Dr. Cho places 3-5 injection points across each masseter muscle, distributed evenly to ensure uniform muscle relaxation. The injection depth targets the muscle belly — deep enough to reach the masseter but avoiding the superficial facial nerve branches. Korean ultra-fine 30G needles minimize discomfort and bruising. Total units: 25-50 per side (50-100 total) depending on muscle mass. The entire jawline slimming Botox injection takes 5-10 minutes. Pain level: 2-3 out of 10.
The Science of Muscle Atrophy — How Botox Slims Over Time
After injection, here is exactly how Botox slims the jawline over the following weeks. Days 3-7: Botox binds to acetylcholine receptors, reducing masseter contractile force. You may notice weakened chewing on hard foods. Weeks 2-4: Reduced muscle activity triggers disuse atrophy — the muscle fibers physically shrink without regular stimulation. Weeks 4-8: Visible jawline narrowing appears as masseter volume decreases by 20-30%. The lower face transitions from square to oval/V-line shape. This gradual progression means results look natural — no sudden dramatic change.
Follow-Up Assessment & Maintenance Protocol
A follow-up at 4-6 weeks evaluates the degree of jawline slimming achieved. Masseter thickness is re-measured and compared to baseline. If asymmetry correction is needed, touch-up units are administered. For optimal jawline slimming, RE:BERRY recommends 3 consecutive sessions spaced 4-6 months apart. With each session, the masseter muscle atrophies further, and many patients find their jawline Botox results last longer — eventually extending to 8-12 months between maintenance treatments as the muscle retrains to a smaller size.
How Botox Slims the Jawline — Benefits & Expected Timeline
- Non-Surgical V-Line: Botox slims the jawline without jaw reduction surgery, bone shaving, or liposuction. Zero incisions, zero anesthesia, zero scarring — achieving V-line contouring through controlled muscle atrophy that looks completely natural.
- 20-30% Volume Reduction: Clinical studies confirm 20-30% masseter muscle volume reduction from jawline slimming Botox, with some patients achieving up to 35% reduction after 3 consecutive treatment sessions over 12-18 months.
- Dual Benefit — Aesthetics + TMJ Relief: Beyond cosmetic jawline slimming, masseter Botox also relieves jaw clenching, teeth grinding (bruxism), and TMJ-related headaches. Over 60% of patients report reduced jaw tension and fewer headaches.
- Affordable Korean Pricing: At ₩99,000 per 100 units at RE:BERRY Incheon Airport, jawline slimming Botox costs 80-90% less than equivalent treatment in the US ($800-1,500) or Japan (¥80,000-150,000). Korea offers the world’s most competitive pricing for this procedure.
- Gradual, Natural Transformation: Because Botox slims the jawline gradually over 4-8 weeks through muscle atrophy (not instant volume change), the transformation appears completely natural. Friends and colleagues notice you look slimmer without identifying the cause.
| Timeline | What to Expect |
|---|---|
| Day 0 | Masseter Botox injections completed in 5-10 minutes. Tiny injection marks fade within 1-2 hours. No swelling or bruising in most patients. Return to all activities immediately including eating. |
| Day 3-7 | Botox begins taking effect. Masseter contraction weakens noticeably. You may feel mild difficulty chewing very hard or chewy foods (gum, steak, jerky). This is the first sign that Botox is working to slim your jawline. |
| Week 2-3 | Muscle softening becomes palpable. When you clench your jaw, the masseter feels noticeably less bulky. Early jawline narrowing may be visible in photographs. Chewing function adapts and normalizes. |
| Week 4-6 | Visible jawline slimming appears. The lower face narrows as masseter volume decreases by 15-25%. This is typically when patients first notice “how Botox slims the jawline” in the mirror. Before and after photos show clear difference. |
| Month 2-3 | Peak jawline slimming results. Maximum 20-30% masseter volume reduction achieved. V-line shape is most defined. This is the ideal period for professional photos. Chewing function is fully normal despite reduced muscle size. |
| Month 4-6 | Results remain stable. Gradual muscle re-strengthening begins toward month 5-6. Schedule next maintenance session at month 4-5 for continuous jawline slimming. With repeated sessions, intervals between treatments extend. |
Jawline Slimming Botox Before & After — How Botox Slims the Jawline
Actual patient results from RE:BERRY Incheon Airport showing how Botox slims the jawline. Individual results vary based on masseter muscle size.
How Botox Slims the Jawline vs Other Jawline Contouring Methods
| Feature | Masseter Botox | Jaw Reduction Surgery | Contour Injection (Lipolysis) | Onda Body Contouring |
|---|---|---|---|---|
| Mechanism | Muscle atrophy via nerve block | Bone shaving/resection | Fat dissolution injection | Microwave-based fat/tissue reduction |
| Target | Masseter muscle bulk | Mandibular bone | Submental/jowl fat | Subcutaneous fat layer |
| Downtime | Zero | 2-4 weeks (swelling 3-6 months) | 2-5 days swelling | 1-2 days redness |
| Results Visible | 4-8 weeks | 3-6 months (post-swelling) | 2-4 weeks | 4-8 weeks |
| Duration | 4-6 months (repeatable) | Permanent | Permanent (fat cells destroyed) | Long-lasting |
| Price at RE:BERRY | ₩99,000 / 100 units | N/A (surgical referral) | ₩69,000 / 10cc | ₩650,000 / 100kJ |
| Best Candidate | Muscular wide jaw | Bone-based wide jaw | Fatty double chin/jowls | Skin laxity + fat |
Jawline Slimming Botox Pricing — How Botox Slims the Jawline at RE:BERRY
April 2026 promotion pricing. All prices in KRW, VAT included.
Korean Masseter Botox — 100 Units
- 100 units Korean KFDA-approved botulinum toxin
- Bilateral masseter injection (50U per side)
- Facial muscle mapping by specialist
- V-line jawline contouring in 4-8 weeks
Very Slim Contour Injection — 10cc
- 10cc fat-dissolving injection
- Targets submental and jowl fat
- Complements masseter Botox for enhanced jawline slimming
- 2-4 sessions recommended for optimal results
Smooth Jawline Package
- LENA chin filler 1cc for chin projection
- Korean jawline & chin Botox
- Enhances chin-to-jaw ratio for V-line shape
- Combine with masseter Botox for complete jawline transformation
Double Chin All-Kill Package (Myeongdong pricing ref.)
- Goop 10cc fat dissolving
- Inmode Fit full face
- Berry Slim 10cc contouring
- Comprehensive jawline + chin slimming
Meet Your Jawline Slimming Botox Specialists
Dr. Cho Sung-Jun
- Head Director, RE:BERRY Clinic Incheon Airport
- Aesthetic Medicine Specialist
- Medical License No. 138858
- Member, Korean Academy of Aesthetic Medicine
- 8,000+ masseter Botox and facial contouring procedures
- Advanced Botulinum Toxin Injection Techniques certified
Medically reviewed by Dr. Cho Sung-Jun, Head Director, Aesthetic Medicine Specialist, RE:BERRY
The Science Behind How Botox Slims the Jawline
Botulinum Toxin-Induced Masseter Muscle Atrophy: Mechanism and Clinical Evidence
The mechanism by which Botox slims the jawline is well-documented through ultrasonographic and MRI studies. Botulinum toxin type A (BoNT-A) inhibits presynaptic acetylcholine release at the neuromuscular junction of the masseter muscle, causing a dose-dependent reduction in muscle contractile force. This chemical denervation triggers disuse atrophy — a physiological process where muscle fibers shrink in diameter and volume when deprived of regular nerve stimulation. Ultrasonographic studies demonstrate measurable masseter thickness reduction beginning at 2-4 weeks post-injection, with peak atrophy occurring at 8-12 weeks. The degree of volume reduction correlates directly with baseline muscle mass and injected dose.
Multiple controlled trials have quantified how effectively Botox slims the jawline. A landmark Korean study using three-dimensional CT volumetric analysis measured average masseter volume reduction of 25.2% at 12 weeks post-injection with 25 units per side. A dose-escalation study comparing 20, 30, and 40 units per side found a significant dose-response relationship — higher doses produced greater muscle atrophy and more pronounced jawline slimming. Importantly, functional outcomes show that while maximum bite force decreases by 30-40% at peak effect, patients report minimal difficulty with normal eating. The masticatory muscles compensate, and daily chewing function remains clinically adequate. Serial treatment protocols (3 sessions at 4-6 month intervals) produce cumulative atrophy effects, with long-term studies showing maintained reduction even 24 months after the last injection.
The histological basis for jawline slimming Botox involves two key cellular processes. First, type II (fast-twitch) muscle fibers — which comprise the bulk of the masseter — undergo preferential atrophy when denervated, reducing cross-sectional area by 20-40%. Second, prolonged denervation shifts fiber-type composition from type II to type I (slow-twitch), creating a fundamentally smaller muscle even after nerve function recovers. This explains why repeated Botox treatments produce progressively longer-lasting results: each treatment cycle pushes the muscle further toward a type I-dominant, smaller baseline. Safety data from over two decades of clinical use confirms an excellent risk profile, with transient chewing difficulty (2-4 weeks) as the most common side effect and rare adverse events limited to paradoxical masseteric bulging or temporary smile asymmetry in less than 1% of cases.
Kim NH, et al. Reduction of masseter muscle volume with botulinum toxin type A injection assessed by computed tomography volumetric analysis. J Oral Maxillofac Surg. 2010;68(10):2471-2476. doi:10.1016/j.joms.2010.02.049
To EW, et al. A prospective study of the effect of botulinum toxin A on masseteric muscle hypertrophy with ultrasonographic and electromyographic measurement. Br J Plast Surg. 2001;54(3):197-200. doi:10.1054/bjps.2000.3526
Park MY, et al. Effect of botulinum toxin type A on masseter muscle atrophy in Asians: a retrospective study of 583 cases. Dermatol Surg. 2017;43(8):1058-1063. doi:10.1097/DSS.0000000000001137
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How Does Botox Slim the Jawline — FAQ at RE:BERRY Incheon Airport
100 units of botulinum toxin injected into the masseter muscles blocks nerve signals that trigger muscle contraction. Over 4-8 weeks, the muscle shrinks 20-30% through disuse atrophy, physically narrowing the jawline width and creating a V-line face shape.
₩99,000 for 100 units (50 units per side) at RE:BERRY Incheon Airport (April 2026 promotion, regular ₩990,000). This is approximately 80-90% cheaper than the US average of $800-1,500 for equivalent jawline slimming Botox treatment.
50-100 units total (25-50 per side) depending on masseter muscle size. Patients with larger, more developed masseters require higher doses. Dr. Cho Sung-Jun assesses your muscle thickness to determine the optimal dose for visible jawline slimming.
4-8 weeks for visible jawline slimming results. Muscle weakening begins at day 3-7, early slimming appears at week 2-3, and peak results at week 8-12. The gradual timeline means results look completely natural — no sudden changes.
4-6 months per session initially. However, with 3 consecutive treatments spaced 4-6 months apart, results become progressively longer-lasting as the muscle retrains to a smaller baseline. Many patients eventually extend to 8-12 months between maintenance sessions.
2-4 weeks of mild chewing difficulty with very hard or chewy foods (gum, jerky, tough steak). Normal eating is unaffected. The temporalis and medial pterygoid muscles compensate for reduced masseter function. By week 4, most patients report completely normal chewing.
3 key differences: masseter Botox targets muscle bulk (₩99,000, zero downtime, 4-6 month results), while jaw reduction surgery removes bone (₩5,000,000+, 3-6 months recovery, permanent). Botox is ideal for muscular jaws; surgery is for bone-based jaw width.
Yes — 55% of patients combine both. Masseter Botox + chin filler creates the ideal V-line: Botox narrows the jaw width while chin filler adds projection, sharpening the chin-to-jaw ratio. The Smooth Jawline Package (₩160,000) includes both.
40% of jawline slimming Botox patients at RE:BERRY Incheon Airport are male. Dr. Cho adjusts the injection protocol for masculine aesthetics — reducing bulk while maintaining a strong, angular jaw. Male patients typically receive 60-100 units total rather than the standard 50-80 for female patients.
2 different targets. Fat dissolving injections (Very Slim ₩69,000/10cc) target submental fat (double chin), while masseter Botox targets muscle bulk. For patients with both fatty and muscular jaw width, combining both treatments produces the most comprehensive jawline slimming.
2-hour minimum layover is sufficient. The consultation takes 10 minutes and injections take 5-10 minutes. RE:BERRY Incheon Airport provides complimentary airport pickup from ICN Terminal 1. Total time: approximately 60-90 minutes including travel.
1 day is more than enough since there is zero downtime. Many patients get their jawline slimming Botox and continue traveling immediately. Results develop over 4-8 weeks after you return home. Follow-up video consultations are available.
2-3 out of 10 on the pain scale. RE:BERRY uses ultra-fine 30G needles. The masseter is a thick muscle, so injections feel like a brief pressure sensation rather than sharp pain. The 3-5 injection points per side are completed in under 2 minutes.
Less than 5% of patients experience mild jowling, typically those over 50 with pre-existing skin laxity. For younger patients with good skin elasticity, the skin contracts naturally as the muscle shrinks. Dr. Cho evaluates skin elasticity before treatment and recommends thread lifting for patients at risk of sagging.
3 differences: Korean clinics use KFDA-approved botulinum toxin products (often Korean-manufactured brands alongside Allergan), injection techniques are refined specifically for Asian facial anatomy, and pricing is 80-90% lower due to intense market competition among 3,000+ aesthetic clinics in Korea.
85% of bruxism patients report significant improvement after masseter Botox. By reducing masseter contractile force by 30-40%, nocturnal grinding intensity decreases substantially. Many patients no longer need night guards after jawline Botox treatment.
6-12 months for full muscle recovery if you stop completely. The masseter gradually returns to its original size as nerve function restores and the muscle rebuilds through regular chewing. However, patients who received 3+ sessions often maintain partial slimming for up to 18 months.
Clench your jaw and feel the sides — if the jawline gets significantly wider when clenching, it is muscular (ideal for Botox). If the width remains the same, it is bone-based. Dr. Cho performs this assessment in consultation and may use imaging to confirm before recommending jawline slimming Botox.
Yes — 30% of patients combine or have had prior filler. Botox targets the muscle layer while filler sits in the subcutaneous tissue. The two treatments work at different tissue depths and do not interfere with each other.
Korean KFDA-approved botulinum toxin type A products. Korea produces several premium brands meeting rigorous safety standards. For patients requesting Allergan Botox specifically, consultation with the doctor is recommended to discuss brand options and pricing differences.
2 hours after injection is recommended before flying. Unlike facial filler, Botox injection sites require minimal precaution. Avoid rubbing your jaw for 4 hours and skip extremely chewy foods for 24 hours. Most patients fly the same day with zero issues.
8 languages supported including English, Japanese, Chinese (Simplified and Traditional), Thai, Vietnamese, Mongolian, and Farsi. English-speaking coordinators explain how Botox slims the jawline and guide international patients through the entire process.
4 advantages: complimentary ICN airport pickup, 365-day operation, ₩99,000 for 100 units pricing (Gangnam charges ₩29,000 for just 50 units), and Dr. Cho Sung-Jun’s experience with 8,000+ facial contouring procedures. RE:BERRY Incheon is the closest premium clinic to the airport.
3 reasons patients choose RE:BERRY: unbeatable pricing (₩99,000 for 100 units masseter Botox), convenience (120 mins from Incheon Airport with free pickup, open 365 days), and expertise (Dr. Cho Sung-Jun and Dr. Kim Dong-Young specialize in V-line facial contouring for international patients).
Yes — 65% of patients combine treatments. Popular combinations include wrinkle Botox (₩9,900/site), skin Botox, and the Spring Contouring Package (₩219,000 with Shurink 300 shots + Inmode FX). Multiple treatments in one visit maximize your time.
3 booking methods: KakaoTalk for instant response, the online booking form on this page, or walk-in (open 365 days, 10:00 AM-8:00 PM). International patients should book 24 hours in advance for airport pickup coordination.
Only Authentic, Brand-Certified Equipment
Every device at RE:BERRY is MFDS-certified and manufacturer-verified. We never use counterfeit or grey-market equipment.
Discover How Botox Slims the Jawline at RE:BERRY Incheon Airport
Now that you know how Botox slims the jawline, experience it firsthand at RE:BERRY Incheon Airport — masseter Botox 100 units for just ₩99,000. Dr. Cho Sung-Jun and Dr. Kim Dong-Young deliver precision V-line jawline contouring with complimentary airport pickup, 365-day availability, and support in 8 languages. Your slimmer, more defined jawline starts with one appointment.
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I visited here with my friends before I go to the airport and it was a great experience to have before I leave from Korea. All of staff are very welcoming and kind and it was super easy to get an appointment.(They said it’s possible for walk-ins as well.)
I would come back here again if I have a chance to come to Korea...
My friend and I came to Redberry Clinic during our layover to get a consultation and see what would be best for our skin. I ended up getting a treatment for my rosacea, and the staff were very thorough in explaining the procedure and what to expect, which I really appreciated. Everyone was also super friendly and welco...
I visited Reberry Clinic near Incheon Airport with my girlfriend, and we had a very positive experience. The clinic is clean, well-organized, and very professional overall. Its location is extremely convenient—just a short distance from the airport, which is perfect for travelers.
The consultant who assisted us was re...
Highly recommend. We will return next time we have a layover in Seoul. Easy communication on whatsapp to book the appointment. 15 minutes away from Incheon airport. White jade injection took only 15 minutes. Very professional and clean operation.
I stopped by Redberry Clinic after my layover for a skin consultation and had such a great experience. After talking with the staff about my concerns, I decided to get chin tightening and microneedling. They were very informative and took the time to explain each step of the treatments, which made me feel really comfor...
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How to Find RE:BERRY Incheon Airport
20 mins from Incheon Airport. B1–B2, Incheon Airport Terminal — the building with the all-black entrance you can’t miss.
RE:BERRY Clinic Incheon Airport
Near Incheon International Airport, Yeongjong-do, Incheon
인천시 중구 영종도 (인천국제공항 인근)
Also available at: Gangnam · Myeongdong