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Coretox Jaw Botox in Seoul: Masseter Reduction & Face Slimming at Rappoel Clinic 2026






Coretox Jaw Botox in Seoul: Masseter Reduction & Face Slimming at Rappoel Clinic 2026



Is Your Square Face Caused by Overactive Jaw Muscles?

Many people with a square facial appearance have overdeveloped masseter muscles rather than wide jaw bones. Habitual chewing of hard foods, teeth grinding (bruxism), or stress-related clenching all cause the masseter to enlarge over time.

Coretox jaw botox is the most effective non-surgical method to slim the jawline. By blocking nerve signals, the masseter gradually shrinks over 4–6 weeks — revealing a slimmer, more refined facial contour. No surgery. No downtime.

Rappoel Dermatology Clinic primarily uses Coretox by Medytox — Korea’s leading botulinum toxin with a proprietary hyaluronic acid (HA) complex for more precise, controlled diffusion. Ideal for jawline slimming where accuracy matters.

Why Coretox Over Standard Botox?

Hyaluronic Acid (HA) Complex Formula

Coretox’s unique HA component enables more even distribution within the masseter muscle, improving precision and reducing unwanted spread to surrounding facial muscles.

Human Albumin-Free

Unlike conventional botulinum toxins stabilized with human serum albumin, Coretox uses HA — suitable for patients with religious or dietary restrictions.

Lower Antibody Formation Risk

Long-term botulinum toxin use can trigger antibody resistance. Coretox’s formulation minimizes this risk, making it a better choice for ongoing maintenance.

Treatment Process

1. Masseter Assessment: Physician evaluates masseter size, symmetry, and tension to determine dosage and injection points individually.

2. Injection Point Marking: Precise sites marked at the thickest portion of the masseter on each side.

3. Quick Injection: The procedure takes 5–10 minutes. Most patients describe only a brief, mosquito-bite-level sting.

4. Post-Treatment Instructions: Written aftercare guidelines provided. You can leave the clinic right after.

How Long Do Results Last?

Results typically last 4–6 months. For the first year, we recommend repeat injections every 4–5 months. As the masseter volume decreases, the interval between sessions can be extended. Many patients see progressively longer-lasting results with 2–3 treatment cycles.

Frequently Asked Questions

When will I see results from Coretox jaw injections?
Muscle relaxation begins around 2 weeks post-injection. The slimming effect is most visible at 4–6 weeks, with full results at 2–3 months.
How long do results last? How often should I return?
Results typically last 4–6 months. We recommend every 4–5 months for the first year; intervals can extend as the masseter shrinks.
Will I lose chewing strength?
Chewing force decreases slightly but daily eating is unaffected. Avoid very hard foods (nuts, hard candy) for about 1 month after treatment.
Can I fly back right after the injection?
Yes. You can fly as soon as 4 hours after injection. Keep your head upright for 4 hours and avoid rubbing the injection area.
Can Coretox correct facial asymmetry?
Yes. Dosage can be adjusted for each side to address mild masseter asymmetry. This will be assessed during consultation.
What’s the difference between Coretox and regular Botox?
Both use botulinum toxin type A, but Coretox adds an HA complex for better diffusion control and is free of human serum albumin — preferred for patients with specific health or religious considerations.

Book Your Coretox Jaw Botox Consultation at Rappoel

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

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

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