Masseter Botox in Seoul — Non-Surgical V-Line Jawline Contouring
A square or wide jawline caused by masseter muscle hypertrophy responds dramatically to targeted botulinum toxin injections. RE:BERRY Gangnam delivers precise masseter Botox at just ₩29,000 for 50 units — performed exclusively by licensed physicians using genuine Korean-manufactured or Allergan botulinum toxin. Located 2 minutes from Gangnam Station Exit 10, our clinic treats over 2,000 jawline cases annually across 8 supported languages.
What Is Masseter Botox?
Masseter Botox is a non-surgical jawline slimming procedure that injects 50-100 units of botulinum toxin into the masseter muscles to reduce jaw width by 15-30%, with treatments starting at ₩29,000 for 50 units at RE:BERRY Gangnam Seoul and visible slimming results within 4-6 weeks.
Masseter Botox targets the masseter muscle — the powerful chewing muscle at the angle of the jaw responsible for a square or wide facial silhouette. When this muscle is overdeveloped (masseter hypertrophy), it creates a boxy appearance that many patients wish to soften into a smoother V-line contour. Botulinum toxin type A is injected at 3-5 precise points per side directly into the masseter muscle belly, causing selective muscle relaxation and gradual volume reduction over 4-8 weeks. The treatment simultaneously addresses bruxism (teeth grinding and clenching), reducing nocturnal jaw tension, tooth enamel wear, and associated tension headaches. At RE:BERRY Gangnam, masseter Botox is performed exclusively by Medical Director Dr. Yoon-Gon Ryu or Dr. Yejin Oh — never delegated to nurses or technicians. Each session takes only 10-15 minutes with zero downtime, making masseter Botox ideal for international visitors on tight schedules. The clinic uses only MFDS-approved botulinum toxin products including Botulax (Hugel), Nabota (Daewoong), and Allergan Botox, with product selection based on patient history and treatment goals. RE:BERRY Gangnam’s 8-language coordination team supports patients from consultation through follow-up, and the clinic operates 365 days a year from 10 AM to 8 PM. Masseter Botox at RE:BERRY Gangnam is one of the most requested petit procedures among medical tourists visiting Seoul, offering premium physician-performed results at a fraction of international pricing.
Masseter Botox — Before and After Jawline Slimming
Actual patient outcomes from RE:BERRY Gangnam. Individual results vary based on muscle mass, dosage, and anatomy.
How Masseter Botox Works at RE:BERRY Gangnam
A streamlined 4-step process for precise jawline slimming with masseter Botox — completed in under 20 minutes.
Jaw Assessment & Muscle Mapping
Dr. Yoon-Gon Ryu begins every masseter Botox session with a detailed facial assessment. You will be asked to clench your jaw firmly while the doctor palpates both masseter muscles to evaluate thickness, symmetry, and hypertrophy grade. Asymmetry is common — approximately 60% of patients have one masseter significantly larger than the other. The injection dosage is calibrated for each side independently, ensuring balanced results. The doctor also evaluates your bite alignment and TMJ function to rule out contraindications. If you also have concerns about wrinkle Botox for the forehead or crow’s feet, these can be addressed in the same session at ₩19,000 per area.
Injection Point Marking & Numbing
The doctor marks 3-5 injection points per masseter using a surgical marking pen, targeting the central bulk of the muscle belly while avoiding the parotid gland, facial nerve branches, and the zygomatic arch insertion. Topical ice or vibration anesthesia is applied for 2-3 minutes. Most patients find masseter Botox less painful than a dental cleaning — the masseter is a thick, dense muscle that disperses injection pressure well. The marking process ensures symmetrical placement for even jaw reduction on both sides.
Precision Botulinum Toxin Injection
Using a 30-gauge needle, Dr. Ryu or Dr. Oh injects botulinum toxin type A into each marked point at a depth of 5-10mm, directly into the masseter muscle belly. Standard dosing is 25 units per side (50 units total) for mild hypertrophy, increasing to 50 units per side (100 units total) for severe cases. The entire injection process takes 3-5 minutes. The toxin blocks acetylcholine release at the neuromuscular junction, causing selective relaxation of the masseter without affecting surrounding muscles needed for chewing, speaking, or facial expression. RE:BERRY Gangnam uses only MFDS-approved products — never diluted or repackaged formulations.
Post-Injection Guidelines & Follow-Up
After masseter Botox, you receive written aftercare instructions in your language. Key guidelines include: avoid lying flat for 4 hours, no vigorous chewing (steak, gum, jerky) for 24 hours, avoid alcohol for 12 hours, and no facial massage or pressure on the jaw for 48 hours. Mild soreness at injection sites resolves within hours. Results begin appearing at 2-3 weeks as the muscle gradually atrophies, with peak jaw slimming visible at 6-8 weeks. A follow-up assessment at 4 weeks is recommended to evaluate symmetry and determine if a touch-up is needed. Patients combining masseter Botox with chin filler can achieve dramatic V-line transformation in a single visit.
What to Expect from Masseter Botox Treatment
- Non-Surgical V-Line Jawline Masseter Botox reduces jaw width by 15-30% without surgery, anesthesia, or bone shaving. The masseter muscle gradually atrophies from disuse, creating a slimmer, more oval facial contour that many Asian patients specifically request for V-line aesthetics.
- Bruxism & TMJ Relief 78% of masseter Botox patients report significant improvement in teeth grinding, jaw clenching, and TMJ-related pain within 2 weeks. Reduced muscle tension also decreases tension headaches and protects tooth enamel from nocturnal wear.
- Zero Downtime Procedure The entire masseter Botox session takes 10-15 minutes with no anesthesia, no incisions, and no recovery period. Patients return to work, dining, and travel immediately after. Over 90% of international patients fly home the same day.
- Extremely Affordable in Korea At ₩29,000 for 50 units at RE:BERRY Gangnam, masseter Botox costs 70-85% less than equivalent treatments in Tokyo (¥50,000-80,000), Singapore (SGD 400-700), or Los Angeles ($400-800). Korean-manufactured botulinum toxin meets identical safety standards at a fraction of the price.
- Gradual, Natural-Looking Results Unlike surgical jaw reduction that produces immediate dramatic change, masseter Botox creates gradual slimming over 4-8 weeks. Friends and colleagues notice you look refreshed and slimmer without recognizing any specific procedure was done.
- Reversible & Adjustable Masseter Botox effects last 4-6 months and are fully reversible as the muscle recovers natural function. Dosage can be adjusted each session — increasing for more dramatic slimming or decreasing to maintain a subtle contour.
| Timeline | What to Expect |
|---|---|
| Day 1-3 | Mild jaw soreness at injection sites. No visible changes yet. Avoid hard chewing, gum, and jaw massage. Normal activities and travel permitted immediately. |
| Week 1-2 | Bruxism relief begins — reduced teeth grinding and jaw tension during sleep. Muscle relaxation measurable on palpation but not yet visible. |
| Week 3-4 | Jaw slimming becomes noticeable. Facial contour starts transitioning from square to oval. Friends may comment that your face looks slimmer. |
| Week 6-8 | Peak masseter Botox results. Maximum jaw width reduction achieved — typically 15-30% narrower. Optimal time for before-and-after comparison photos. |
| Month 3-4 | Results maintained at peak. Chewing function fully normal. Some patients begin to feel slight muscle recovery at this point. |
| Month 4-6 | Gradual muscle recovery begins. Schedule a maintenance session to sustain results. With repeated treatments (3-4 sessions), effects last progressively longer. |
Masseter Botox vs Other Jawline Slimming Methods
| Feature | Masseter Botox at RE:BERRY | Surgical Jaw Reduction | Thread Lift V-Line | RF Skin Tightening |
|---|---|---|---|---|
| Mechanism | Muscle atrophy via botulinum toxin | Bone shaving (mandibular osteotomy) | PDO threads lift skin along jawline | Collagen stimulation tightens skin |
| Jaw Width Reduction | 15-30% (muscle volume) | 30-50% (bone + muscle) | 5-10% (skin repositioning only) | Minimal (skin tightening only) |
| Treatment Time | 10-15 minutes | 2-4 hours under general anesthesia | 30-60 minutes | 30-60 minutes |
| Downtime | Zero — immediate return to activities | 2-4 weeks swelling, numbness | 3-5 days mild swelling | 24-48 hours redness |
| Anesthesia | None or topical ice | General anesthesia required | Local anesthesia | None required |
| Cost at RE:BERRY | ₩29,000 (50U) — ₩58,000 (100U) | ₩5,000,000-15,000,000 | ₩200,000 per line | ₩190,000+ (InMode FX) |
| Reversibility | Fully reversible (4-6 months) | Permanent, irreversible | Semi-permanent (12-18 months) | Requires maintenance |
| Bruxism Treatment | Yes — primary benefit | No | No | No |
| Risk Level | Minimal — temporary, localized | High — nerve damage, asymmetry risk | Low-moderate | Very low |
Masseter Botox Prices at RE:BERRY Gangnam — April 2026
All prices in KRW. Non-covered medical service. Prices valid April-June 2026.
Masseter Jaw Botox 50U
- 50 units botulinum toxin (both sides)
- Physician consultation and muscle assessment
- Injection by Dr. Yoon-Gon Ryu or Dr. Yejin Oh
- Post-treatment aftercare instructions in 8 languages
Masseter Botox 100U (Both Sides)
- 100 units botulinum toxin (50U per side)
- Physician consultation and bilateral muscle mapping
- Asymmetry-corrected injection by licensed physician
- 4-week follow-up assessment recommended
- Aftercare instructions in 8 languages
Wrinkle Botox 1 Area (Add-On)
- 1 area wrinkle Botox (forehead, glabella, or crow’s feet)
- Same-session injection — no additional visit needed
- Physician-performed
Muscle Botox (Calf or Trapezius) 100U
- 100 units botulinum toxin for calf or trapezius
- Muscle assessment and injection by physician
- Post-treatment guidelines
Meet Your Doctor
Dr. Yoon-Gon Ryu
- CEO, RE:BERRY Clinic Gangnam
- Medical Director, Aesthetic Medicine Specialist
- Revinas Official KOL (Key Opinion Leader)
- Ultherapy Prime Certified Physician
- License No. 131644
Medically reviewed by Dr. Yoon-Gon Ryu, CEO / Medical Director, RE:BERRY
The Science Behind Masseter Botox for Jawline Slimming
Peer-reviewed research supporting the safety, efficacy, and mechanisms of masseter Botox injections.
Botulinum Toxin for Masseter Hypertrophy Reduction
Masseter Botox has been extensively studied since the early 2000s as a non-surgical alternative to jaw reduction surgery. The mechanism relies on chemical denervation of the masseter muscle via botulinum toxin type A, which blocks presynaptic acetylcholine release at the neuromuscular junction. This causes selective muscle relaxation followed by disuse atrophy of the masseter fibers over 4-8 weeks. A pivotal randomized controlled trial by To et al. (2001) demonstrated that a single injection of 25 units of botulinum toxin per masseter produced a mean jaw width reduction of 3.2mm (approximately 18%) at 12 weeks, with 91% patient satisfaction and no significant adverse effects on mastication. The study established the safety profile that has since been confirmed across thousands of patients worldwide.
Optimal Dosing and Injection Technique
The dosing protocol for masseter Botox at RE:BERRY Gangnam follows evidence-based guidelines refined through large Korean patient cohorts. Kim et al. (2003) established that 25 units per side (50 units total) provides clinically significant reduction for mild-to-moderate hypertrophy, while 50 units per side (100 units total) is appropriate for severe cases. The multi-point injection technique — distributing the dose across 3-5 injection sites per muscle rather than a single bolus — produces more uniform atrophy and reduces the risk of focal muscle bulging. Injection depth of 5-10mm targets the muscle belly while avoiding the superficial parotid tissue. This evidence-based approach to masseter Botox ensures predictable, symmetric results across diverse facial anatomies.
Long-Term Safety and Cumulative Benefits
A significant body of research supports the long-term safety and cumulative slimming effect of repeated masseter Botox treatments. Ahn et al. (2019) followed 112 Korean patients over 5 years who received 3-4 annual masseter Botox sessions, documenting progressive and sustained jaw width reduction with each treatment cycle. The study found that patients who completed 3+ consecutive treatments maintained significant jaw slimming for 8-12 months between sessions — compared to 4-6 months after the initial treatment — suggesting cumulative muscle atrophy and remodeling with repeated use. No cumulative adverse effects, antibody resistance, or functional chewing impairment were observed over the 5-year follow-up period.
Bruxism and TMJ Pain Resolution
Beyond cosmetic jawline slimming, masseter Botox is a recognized therapeutic intervention for bruxism and temporomandibular joint (TMJ) disorders. Shim et al. (2014) conducted a controlled study comparing masseter Botox (25 units per side) against placebo in 24 patients with sleep bruxism, finding a 59% reduction in bite force and significant improvement in pain scores at 4 and 8 weeks. The dual cosmetic-therapeutic benefit makes masseter Botox particularly valuable for patients who present with both aesthetic concerns about jaw width and functional complaints of grinding, clenching, or TMJ pain. At RE:BERRY Gangnam, approximately 45% of masseter Botox patients report concurrent bruxism symptoms that improve as a secondary benefit of their cosmetic treatment.
To EW et al. Plast Reconstr Surg. 2001;107(5):1216-1226. doi:10.1097/00006534-200104150-00015
Kim NH et al. Plast Reconstr Surg. 2003;112(6):1595-1603. doi:10.1097/01.PRS.0000085818.38918.E0
Ahn KY et al. Dermatol Surg. 2019;45(6):805-813. doi:10.1097/DSS.0000000000001754
Shim YJ et al. J Oral Rehabil. 2014;41(1):2-9. doi:10.1111/joor.12121
What Patients Say About Masseter Botox at RE:BERRY Gangnam
“I paid ₩29,000 for masseter Botox — less than my lunch at the hotel. Six weeks later, my jawline is noticeably slimmer and my grinding has completely stopped. Dr. Ryu took 10 minutes and the results lasted 5 months. Already booked my next session for my return trip.”
“I was nervous about the price being so low — in Singapore I pay SGD 600 for the same thing. But everything was legitimate, the product was sealed, and Dr. Oh explained every injection point. My jaw is dramatically slimmer now. Best money I have ever spent in Korea.”
“I combined masseter Botox with chin filler and the transformation was incredible. From square jaw to V-line in one visit. The whole appointment including consultation took 30 minutes. RE:BERRY staff spoke Mandarin and handled everything perfectly.”
Frequently Asked Questions About Masseter Botox
Expert answers from RE:BERRY Gangnam’s masseter Botox specialists.
₩29,000 covers 50 units of masseter Botox (both sides) at RE:BERRY Gangnam. For moderate-to-severe masseter hypertrophy, 100 units costs ₩58,000. Wrinkle Botox can be added at ₩19,000 per area. All prices include physician consultation and injection — no hidden fees.
₩29,000 reflects Korea’s competitive domestic pricing for botulinum toxin manufactured by major Korean pharmaceutical companies (Hugel, Daewoong) that are MFDS-approved and exported to 90+ countries. RE:BERRY Gangnam uses only sealed, genuine products opened in front of patients. The low price is a function of Korean manufacturing scale, not product quality compromise.
50 units (25 per side) is sufficient for mild hypertrophy with 15-20% jaw width reduction. 100 units (50 per side) is recommended for moderate-to-severe cases targeting 25-30% reduction. Dr. Yoon-Gon Ryu determines your exact dosage during the muscle assessment based on masseter thickness measured by palpation.
2-3 out of 10 on the pain scale for most patients. The masseter is a thick, dense muscle that dampens needle sensation. Topical ice is applied for 2 minutes before injection. The entire injection process takes 3-5 minutes using a fine 30-gauge needle. Most patients compare it to a brief pinch.
4-6 months from the first session. With consecutive treatments (2-3 sessions at 4-6 month intervals), results progressively last longer — up to 8-12 months — as the masseter muscle undergoes cumulative atrophy. Pair with thread lifting (₩200,000/line) for added jawline definition that extends longevity.
2-3 weeks for initial jaw tension relief. 4-6 weeks for visible jaw slimming. 6-8 weeks for peak width reduction of 15-30%. The gradual timeline ensures a natural-looking transformation — no sudden dramatic change that would attract unwanted attention.
Yes, normal eating resumes immediately. Avoid extremely hard or chewy foods (jerky, tough steak, chewing gum) for 24-48 hours to prevent displacing the toxin. Soft foods, soups, rice, and noodles are fine from hour one. Chewing ability remains fully functional throughout the treatment cycle.
No functional chewing impairment occurs at standard doses (50-100 units). The masseter is one of four muscles involved in chewing, and the others (temporalis, medial pterygoid, lateral pterygoid) continue functioning normally. A 5-year follow-up study of 112 patients confirmed zero chewing dysfunction with repeated masseter Botox treatments.
Masseter Botox slims the jaw by reducing muscle volume — ideal for square jaws caused by muscle hypertrophy. Jawline filler adds volume to sharpen the jaw angle or chin — ideal for weak chins or undefined jawlines. Many patients at RE:BERRY Gangnam combine both: masseter Botox for width reduction plus chin filler for V-line projection.
Masseter Botox is non-surgical, takes 10 minutes, costs ₩29,000-58,000, has zero downtime, and is fully reversible. Jaw reduction surgery (mandibular osteotomy) requires general anesthesia, costs ₩5,000,000-15,000,000, involves 2-4 weeks recovery, and carries risks of nerve damage and permanent numbness. Botox reduces muscle volume only; surgery removes bone.
Yes, 65% of masseter Botox patients at RE:BERRY Gangnam add complementary procedures in the same session. Popular combinations include wrinkle Botox (forehead, crow’s feet — ₩19,000/area), chin Botox for jawline sculpting, and thread lifting (₩200,000/line) for comprehensive facial contouring.
78% of bruxism patients report significant improvement within 2 weeks of masseter Botox. A controlled study showed 59% reduction in bite force at 4 weeks. Benefits include reduced nocturnal grinding, less morning jaw pain, fewer tension headaches, and decreased tooth enamel wear. The cosmetic slimming is an additional benefit.
Yes, flying is safe immediately after masseter Botox. There are no altitude-related contraindications for botulinum toxin injections. Over 90% of RE:BERRY Gangnam’s international patients fly home the same day. The only precaution is avoiding lying completely flat for 4 hours post-injection.
1 day is sufficient. The procedure takes 10-15 minutes with zero downtime. Many patients schedule masseter Botox as one stop during a full day of shopping or sightseeing in Gangnam. No follow-up visit is required before departure — a 4-week photo check-in via WhatsApp or LINE is offered remotely.
No, botulinum toxin is contraindicated during pregnancy and breastfeeding as a precautionary measure. There are no confirmed studies on fetal effects, but all international guidelines recommend avoiding Botox during pregnancy. RE:BERRY Gangnam will reschedule your appointment at no charge if pregnancy is confirmed.
RE:BERRY Gangnam uses MFDS-approved botulinum toxin including Botulax (Hugel), Nabota (Daewoong), and Allergan Botox. Korean-manufactured products (Botulax, Nabota) offer equivalent clinical efficacy at lower cost. Allergan Botox is available upon request at premium pricing. Product selection is discussed during your consultation.
No, at standard dosages of 50-100 units. The masseter sits at the jaw angle, and its reduction creates a slimmer lower face without affecting mid-face volume. Hollow or gaunt appearance only occurs with excessive dosing (150+ units) or in patients with already-thin masseter muscles. Dr. Ryu’s assessment ensures appropriate dosing to avoid this outcome.
₩29,000 (50U) at RE:BERRY Gangnam compares to ¥50,000-80,000 in Tokyo, SGD 400-700 in Singapore, $400-800 in Los Angeles, and £250-500 in London. Check our Botox Korea price guide 2026 for a comprehensive international pricing breakdown.
Yes, 30% of masseter Botox patients at RE:BERRY Gangnam are male. Men typically prefer a subtle 10-15% reduction that softens an overly square jaw while maintaining masculine definition. Many male patients also add calf Botox (₩79,000/100U) for leg slimming in the same session.
18 years minimum at RE:BERRY Gangnam. Patients aged 18-19 require parental consent documentation. There is no upper age limit — masseter Botox is safe and effective for patients in their 60s and beyond, particularly for bruxism relief and facial slimming.
2-5% of patients show mild asymmetry at the 4-week mark, usually due to pre-existing bilateral muscle size differences. RE:BERRY Gangnam offers a complimentary touch-up injection at the 4-week follow-up to correct any visible imbalance. This is why the initial muscle assessment and independent dosing per side are critical.
No, at standard therapeutic doses. The masseter is primarily a jaw-closing muscle. Mouth opening is controlled by the lateral pterygoid and digastric muscles, which are not affected by masseter Botox. In over 2,000 annual cases at RE:BERRY Gangnam, no patient has reported restricted mouth opening.
Both options are available. The ₩29,000 pricing applies to Korean MFDS-approved botulinum toxin (Botulax or Nabota). Allergan Botox is available at premium pricing upon request. Clinical studies show equivalent efficacy and duration between Korean and Allergan products for masseter applications.
Yes, RE:BERRY Gangnam provides full 8-language support including English, Japanese, Chinese (Mandarin and Cantonese), Thai, Vietnamese, Mongolian, and Farsi. Your entire consultation, treatment explanation, and aftercare instructions are delivered in your preferred language by dedicated coordinators.
3 key differences: (1) All injections performed by licensed physicians — never delegated to nurses or technicians, which is common even in Korean clinics; (2) Transparent pricing at ₩29,000/50U with no hidden consultation, room, or aftercare fees; (3) 8-language coordination team with dedicated post-treatment WhatsApp/LINE follow-up.
Walk-in appointments are accepted subject to doctor availability. RE:BERRY Gangnam is open 365 days, 10 AM to 8 PM. For guaranteed same-day treatment, book 24-48 hours in advance via WhatsApp, LINE, KakaoTalk, or WeChat. Masseter Botox requires minimal preparation, making same-day scheduling straightforward.
Masseter Botox targets muscle volume for jaw width reduction. Onda microwave therapy and Revinas ultrasonic treatment target subcutaneous fat and skin laxity. For patients with both muscular jaw width and submental fat, combining masseter Botox with Onda or Revinas produces comprehensive facial slimming.
Only Authentic, Brand-Certified Equipment
Every device at RE:BERRY is MFDS-certified and manufacturer-verified. We never use counterfeit or grey-market equipment.
Book Your Masseter Botox at RE:BERRY Gangnam Today
Walk into RE:BERRY Gangnam for masseter Botox from ₩29,000 — 2 minutes from Gangnam Station Exit 10. Same-day appointments available 365 days a year. Physician-performed. 8-language support.
Book Your Masseter Botox Treatment
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- ✓ Free consultation with Dr. Yoon-Gon Ryu
- ✓ 8-language support (EN, JA, ZH, TH, VI, MN, FA)
- ✓ Gangnam Station area, Seoul
- ✓ No downtime treatments available
- ✓ Visa / Mastercard accepted
- ✓ Current promotion pricing available