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Best Jawline Slimming Botox in Seoul | Rappoel Clinic Masseter Reduction for V-Face 2026






Best Jawline Slimming Botox in Seoul | Rappoel Clinic Masseter Reduction for V-Face 2026



What Causes a Square Jaw?

A square or wide jawline is most commonly caused by masseter muscle hypertrophy. The masseters are located at the lower jaw angles — excessive chewing of hard foods, teeth grinding (bruxism), or genetic predisposition can cause them to enlarge, making the jaw appear wide and angular. Botulinum toxin injection is currently the most effective non-surgical solution for masseter reduction.

📍 Rappoel Dermatology Clinic · 5F, 77 Seocho-daero, Seocho-gu, Seoul · 3-min walk from Gangnam Station Exit 10

Masseter Botox at Rappoel Clinic

Precision Masseter Targeting

Rappoel doctors first assess both masseter sizes and symmetry, then design a personalized injection plan. Botulinum toxin is injected into the masseter at the jaw angle, blocking neuromuscular signals to gradually reduce muscle volume. Changes begin 2–4 weeks post-injection, with the face noticeably slimmer by weeks 6–8.

Benefits Beyond Face Slimming

Masseter reduction not only creates a V-shaped face — it also improves teeth grinding, reduces temporomandibular joint pressure, and relieves jaw tension. For patients with bruxism, masseter botox is a highly beneficial multi-effect treatment.

Procedure Details

Procedure Time

Consultation + injection: approximately 20–30 minutes total. No anesthesia required — normal daily activities can resume immediately.

Post-Treatment Notes

Avoid excessive chewing or pressing the injection site for 4 hours post-treatment. Avoid intense exercise and alcohol on the same day. Mild tenderness at the injection site is normal and temporary.

Results Timeline and Long-Term Plan

First-time results last 4–6 months. With regular maintenance, the masseter gradually atrophies and duration extends to 6–9 months — some patients who maintain treatment for 2 years achieve even longer-lasting improvement. Maintenance injections every 4–6 months are recommended.

Frequently Asked Questions

Is masseter botox really effective for slimming the face?
Yes — masseter botox is one of the most effective non-surgical approaches for square jaw reduction. Changes begin within 2–4 weeks, with peak results at 6–8 weeks: a noticeably narrower jawline and smoother facial contour.
Will masseter botox affect my ability to chew?
No. The masseter retains sufficient chewing function even after reduction. Some patients notice slightly reduced bite force initially, but normal eating is completely unaffected — full adaptation occurs within 1–2 weeks.
How long does masseter botox last? How often do I need touch-ups?
First-time results last 4–6 months. With regular maintenance, the muscle gradually atrophies and duration extends to 6–9 months. Touch-up every 4–6 months is recommended — long-term maintenance yields increasingly durable results.
Can masseter botox cause facial asymmetry?
Rappoel doctors carefully assess both masseter sizes before treatment and adjust dosage for any existing asymmetry — ensuring balanced improvement on both sides. Minor asymmetry can be fine-tuned with a touch-up injection 4 weeks later if needed.
How do I book masseter botox at Rappoel Clinic?
Book via WeChat (rappoelkr) or Line (rappoelkr). The clinic is 3 minutes from Gangnam Station Exit 10 in Seoul. Consultations are available in Korean, Chinese, and English — very foreigner-friendly.
Is there an age limit for masseter botox?
Generally recommended for adults 20 and above, after skeletal development is complete. There is no strict upper age limit. Rappoel doctors will assess your jaw condition and provide the most suitable recommendation.

Book a Jawline Slimming Consultation

📍 77, Seocho-daero, Seocho-gu, Seoul, South Korea

🕐 Mon–Fri 10:00–19:00 · Sat 10:00–17:00

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