Dr. Jong Seon Kim
“I am a doctor you can trust, dedicated to enhancing your natural beauty.”
Career & Credentials
- Director, Gangnam HERA Plastic Surgery Clinic
- Board Member, Korean Society of Aesthetic Surgery (KSAS)
+9 more
Procedure time
About 5–10 minutes
Downtime
Downtime is minimal and most people resume daily activities immediately
Overview
Description
Coretox is a botulinum toxin type A developed by Medytox in Korea. It is a "core," complexing-protein-free formulation in which the non-active accessory proteins are removed, refining only the essential 150 kDa neurotoxin. This complexing-protein-free design is intended to reduce the risk of antibody resistance over repeated treatments. It is also produced without animal-derived components in the culture medium and without human serum albumin as a stabilizer, and it works like other type A toxins to relax targeted muscles and soften wrinkles.
Why it works
The essentials, at a glance
Wrinkle Smoothing
Relaxes overactive expression muscles to soften glabellar, forehead, and eye-area lines.
Facial Slimming
Helps reduce masseter volume for a slimmer, more defined jawline over time.
Reduced Resistance Risk
Its complexing-protein-free structure is designed to lower the chance of neutralizing-antibody formation with repeat use.
Treatment Areas
Treatment Areas
Each area is planned separately, based on your anatomy.
Forehead lines
Frown lines (glabella)
Crow's feet
Jaw slimming (masseter)
Shoulder line (trapezius)
Underarm sweating
Who it's for
Recommended For
Where filler tends to make the most visible difference.
- Softening frown, forehead & crow's-feet lines
- Jaw (masseter) slimming for a slimmer face
- Frequent toxin users minimizing resistance risk
- Those wanting a protein-free formula without albumin
Your visit
How the Procedure Works
What happens on the day, from consultation to aftercare.
01
Consultation to evaluate muscle activity and treatment goals
02
Cleansing of the treatment area
03
Marking of the injection points
04
Injection with a fine needle
05
Cooling and soothing of the treated area
06
Aftercare guidance, with retreatment usually every 3–4 months
Trusted by international patients
5.0
Google rating · 288 verified reviews
Same price as locals
No foreigner markup
English interpreter
On-site, every visit
Why HERA
Why international patients choose HERA
Price, language and booking, answered before you fly to Seoul.
English interpreter
An interpreter stays with you from consultation to checkout.
Same price as locals
Transparent pricing with no foreigner markup.
6,000+ global patients
Patients from 30+ countries have been treated here.
Genuine, approved fillers
Only authentic, government-approved products.
1:1 specialist care
A board-certified doctor from consult to aftercare.
3 min from Gangnam Station
Exit 9, then a three-minute walk.
Your medical team
The Doctors Who Will Treat You
Board-certified doctors. The doctor you consult with is the one who treats you and checks your result.
Dr. Jong Hoon Lee
“I dedicate myself to achieving the best results with minimal need for revision.”
Career & Credentials
- Co-author, LIFTINGOLOGY: Science and Clinical Practice in Aesthetic Medicine
- Recipient, Minister of Health and Welfare Award for Outstanding Contribution to National Health Improvement
+11 more
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Frequently asked questions
Frequently asked questions
Answers to the questions international patients ask us most.
How soon will I see results?
Most people notice the effect within 3–7 days, with the full result typically visible around 2 weeks after treatment.
How long does it last?
Results generally last about 3–4 months. Duration varies by dose, treatment area, and individual metabolism.
Does it hurt?
Discomfort is usually mild because very fine needles are used; topical numbing or cooling can be applied if needed.
Will my expression stay natural?
With appropriate dosing and placement, the goal is to soften lines while preserving natural facial movement.
How is Coretox different from other toxins?
Coretox is a complexing-protein-free ("core") toxin from Medytox, refined to the essential neurotoxin and made without human serum albumin, which is intended to reduce the risk of antibody resistance with repeated treatment.
Visit Gangnam HERA
Visit Gangnam HERA
In Seocho-gu, Seoul, a three-minute walk from Gangnam Station Exit 9.
Address
4F, 9 Seocho-daero 73-gil, Seocho-gu, Seoul, Republic of Korea
Opening Hours
- Tuesday, Wednesday, and Thursday: 10:00 AM – 7:00 PM
- Monday, Friday: 10:00 AM – 8:00 PM
- Saturday: 10:00 AM – 5:00 PM
- Lunch break: 1:00 PM – 2:00 PM
- Closed on Sundays and public holidays
