Is Your Calf Bulk From Muscle or Fat? (This Determines If Botulinum Toxin Will Work)
Calf botulinum toxin is effective only for muscle-type calf enlargement:
- Muscle-type calves: Overdeveloped gastrocnemius muscle — caused by genetics, running, hiking, or habitual high-heel wear. Botulinum toxin can reduce calf circumference by 1–3 cm
- Fat-type calves: Subcutaneous fat accumulation — botulinum toxin has no effect; ONDA or lipolysis treatments are more appropriate
- Edema-type calves: Poor circulation — primarily addressed through lifestyle changes and lymphatic drainage
Rappoel doctors perform a standing and toe-raise assessment during consultation to precisely evaluate gastrocnemius prominence and confirm suitability.
How Coretox Slims the Calf
When Coretox is injected into the gastrocnemius, it blocks nerve transmission signals. Without stimulation, the muscle gradually atrophies over 3–6 weeks, naturally reducing calf volume.
- Visible results: Begin at 3–4 weeks; most pronounced at 6–8 weeks
- Duration: Approximately 5–7 months (longer than facial muscle injections)
- Average reduction: Typically 1–3 cm maximum calf circumference depending on muscle mass
With repeated treatments, atrophy effects may become more lasting — some patients see significantly extended results after 3–4 sessions.
The Treatment Session
- Standing assessment (10 min): Doctor evaluates gastrocnemius contour and marks injection zones
- Prep (10 min): Cleanse and optional topical numbing cream
- Injection (20–30 min): Multi-point injection into gastrocnemius, typically 10–15 points per leg
- Aftercare: Avoid pressing for 4 hours; no strenuous exercise same day
The full treatment is comfortable and patients walk out normally — no impact on sightseeing or daily activities.
Important Considerations
- Not immediate: Allow 3–6 weeks for results; plan treatment before key events or travel
- Temporary weakness: Mild reduction in calf strength (especially uphill) for the first 2–4 weeks while adapting
- Maintenance required: Muscle gradually recovers if injections stop; regular touch-ups needed to maintain results
Frequently Asked Questions
Contact Rappoel Dermatology Clinic
📍 77, Seocho-daero, Seocho-gu, Seoul, South Korea
🕐 Mon–Fri 10:00–19:00 · Sat 10:00–17:00
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