A V-line jaw — slim, tapered, with a softly pointed chin — has been the most-searched Korean aesthetic outcome for over a decade.
What surprises most international patients is how much of that contour comes not from surgery, not from filler, but from a small dose of botulinum toxin placed correctly in the masseter muscles.
Done well, jawline Botox quietly slims the lower face over a few weeks, softens jaw tension and night-time clenching, and lets the natural chin shape take over the aesthetic conversation.
Done poorly, it leaves the face flat, the corner of the jaw collapsed, or the slimming uneven side-to-side.
Welcome to the Relieve Clinic blog. Located in the heart of Apgujeong, Seoul, our philosophy is simple: Beauty is perfected in comfort. Every jawline Botox treatment at Relieve is mapped during a 1:1 consultation with Dr. Park Tae-oh, with palpation of your individual masseter anatomy before any unit is drawn up.
Most articles about jawline Botox in Korea stop at dosage and brand. There’s one mapping decision that separates a sharp V-line outcome from a flat or asymmetric one. We’ll reveal what it is near the end of this guide. Keep reading.
Understanding How Jawline Botox Creates a V-Line
The masseter is the main chewing muscle, anchored from the cheekbone down to the angle of the jaw. In patients with a square or wide lower face, the masseter is hypertrophied — overdeveloped from chewing, clenching, or grinding.
This bulk pushes outward at the jaw corner, creating the squared-off shape that surgical V-line procedures used to address.
Botulinum toxin injected into the muscle blocks the nerve signals that drive contraction. Over 2–6 weeks the muscle relaxes; over 6–8 weeks it gradually atrophies (shrinks).
The width of the lower face narrows, the angle of the jaw softens upward, and the chin — unchanged in itself — appears more pointed by contrast. The V-line emerges.
Dosage, Brands, and Typical V-Line Outcome Timeline
The two questions visiting patients ask first are about dosage and which botulinum brand is being used. Both matter for the final contour.
| Variable | Typical Range | Notes |
| Female dosage per side | 25–35 units | Total 50–70 units |
| Male dosage per side | 40–50 units | Total 80–100 units |
| Korean brands (Nabota, Coretox, Botulax) | $50–$200 USD total | Excellent quality, locally produced |
| Imported brands (Allergan, Xeomin) | $150–$400 USD total | 2–3x higher price |
| Onset of softening | 1–2 weeks | Reduced tension first |
| Peak V-line outcome | 6–8 weeks | Muscle atrophy complete |
| Duration | 3–6 months | Longer with repeat sessions |
An important 2026 update: the 10% VAT refund for foreign aesthetic patients ended on January 1, 2026.
The quoted price for jawline Botox in Korea plus 10% VAT is now your final out-of-pocket cost. There is no longer an airport tax refund for aesthetic services.
💡 If you’re focused specifically on price comparison during your medical trip to Korea, our sister guide breaks down brand-by-brand pricing:
Masseter Botox Cost in Korea: A Brand-by-Brand Comparison.
Factors That Shape Your V-Line Result
Dosage and brand are only the first layer. The factors that actually determine whether your V-line outcome reads as sharp, balanced, and natural:
- Baseline masseter volume: A bulky muscle has more slimming potential than an already-modest one. Realistic expectations are set during consultation.
- Injection depth and points: The muscle is layered. Energy placed only at the surface produces a softer, smaller change than well-distributed deep injections.
- Symmetry mapping: Most people have one masseter larger than the other. Equal dosing on both sides preserves the existing asymmetry. Custom dosing corrects it.
- Complementary chin filler: If the chin is recessed, masseter slimming alone won’t produce a clear V-line. Pairing with chin projection filler completes the geometry.
- Repeat session cadence: Each repeat session produces longer-lasting atrophy, allowing maintenance intervals to extend over time.
The Critical Factor We Promised to Reveal
Here it is: injection point selection within the masseter envelope, not total units. The masseter isn’t a single uniform block — it has a deep layer and a superficial layer, and the prominent angle of the jaw is driven mainly by the lower, posterior portion of the muscle.
Standard “spray” protocols that scatter units evenly across the cheek produce a generic, flattening result. Concentrating dosage at the lower, posterior masseter — while sparing the upper anterior portion that supports natural cheek volume — produces a sharper V-line without flattening the mid-face.
At Relieve Clinic, Dr. Park Tae-oh palpates each side of your jaw before injection, identifies the bulkiest segment of muscle, and places the highest dose precisely there.
This is the quiet step that separates jawline Botox in Korea outcomes between sharp and flat.
Planning Your Visit to Seoul
Jawline Botox is a same-day procedure with effectively no downtime.
The injection takes under 10 minutes, requires only topical numbing, and you can return to dinner, sightseeing, or your flight the same evening. Tiny pinpoint marks fade within hours.
Schedule your first session 6–8 weeks before any major event where you want to see the full V-line effect.
If you’re combining jawline Botox in Korea with chin filler, Onda lifting, or Ultherapy for a comprehensive lower-face contour plan, allow 3–4 days in Seoul. Our English-speaking coordinators handle scheduling, brand selection, and aftercare guidance from start to finish.
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When will I see the V-line effect from jawline Botox in Korea?
Initial muscle softening and reduced tension show within 1 to 2 weeks. Visible slimming usually appears at 2 to 4 weeks. Peak V-line outcome — full muscle atrophy and the sharpest contour — lands at 6 to 8 weeks. Plan your schedule around this timeline if you have a specific event in mind.
How often do I need repeat sessions?
The slimming effect typically lasts 3 to 6 months. With consistent repeat sessions, the masseter remains atrophied longer and many patients find their intervals stretching from 4 months initially to 6 to 9 months after a few rounds. Maintenance is generally less frequent than for wrinkle Botox in expressive areas.
Will my smile or chewing be affected?
When dosing and injection points are mapped correctly, smile expression and normal chewing strength are unaffected. The masseter has substantial reserve capacity, and the goal is partial muscle relaxation rather than paralysis. Temporary mild chewing fatigue with very hard foods may occur in the first 2 to 3 weeks for some patients.
Dr. Park Tae-oh is the founder and director of Relieve Clinic Seoul in Apgujeong, Gangnam, where he performs consultation and treatment personally. His work centers on reducing discomfort during aesthetic dermatology, drawing on more than 30,000 clinical cases. In June 2026 he demonstrated periorbital radiofrequency technique using XERF at Cynosure Lutronic Academy Korea.
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