V-Line Slim Injection in Seoul — deoxycholic acid for double chin and a defined jawline
Fat precisely, contour clearly
Overview
The V-Line Slim Injection in Seoul is a fat-cell-targeting injectable for submental fat — the double chin — described by the clinic as the only FDA-approved injectable for this purpose available in Korea. Its main ingredient, deoxycholic acid, is a naturally occurring bile acid that breaks down fat by destroying fat-cell membranes under the chin.
At VOS Dermatology in Gangnam it is used to improve a double chin and an undefined jawline while improving skin elasticity. A session is completed within 30 minutes, no anesthesia is required and you return to daily activities immediately; mild swelling for 1–2 days is possible and results vary from person to person.
Is V-Line Slim Injection right for you?
- Those concerned about double chin
- Those looking to enhance jawline definition
- Those seeking natural skin firmness
- Those wanting long-lasting treatment results
What V-Line Slim Injection does in the skin
01Fat Cell-Targeting Injectable for Submental Fat Reduction
V-Line Slim Injection is the only FDA-approved injectable treatment in Korea for submental fat reduction. This long-lasting contouring procedure works by destroying fat cell membranes under the chin. The main ingredient, deoxycholic acid (DAC), is a naturally occurring bile acid that breaks down fat. You’ll notice visible improvement in double chin and undefined jawline, along with enhanced skin elasticity.
02Proven Safety and Efficacy for Korean Patients
Transform your profile with our V-line enhancement treatment that reduces double chin while improving skin elasticity. At VOS Dermatology Clinic, we’ll help you achieve your ideal slim profile.
Session, comfort, downtime, results
- Session time
- About 10–20 minutes; completed within 30 minutes
- Comfort
- Fine needles; pain is mild; no anesthesia required
- Downtime
- None — temporary swelling, bruising or redness may occur for 1–2 days
- Results
- Contour improvement generally within 12 weeks; 3–5 sessions at 12-week intervals recommended; described as long-lasting (varies)
- Simultaneous improvement of double chin, undefined jawline, and skin elasticity
- Long-lasting results (up to 4 years)
- Treatment completed within 30 minutes
- No anesthesia required
- Immediate Return to Daily Activities (mild swelling may occur for 1–2 days)
Results, timing and recovery vary from person to person. Nothing here replaces an in-person consultation.
V-Line Slim Injection Pricing at VOS
Based on VOS Dermatology’s official price list as of October 16, 2026.
Prices are in KRW and are subject to 10% VAT. The same pricing applies to all patients, regardless of nationality.
The appropriate dosage and number of treatment sessions will be determined during your consultation with Dr. Kim.
Nuviju
Cholic Acid- 1 Vial₩400,000
- From 3 Vials₩900,000₩300,000 per vial
BellaColline
Deoxycholic Acid- 2 mL₩400,000
Related treatments
Anti-Wrinkle Injection
Precision is what makes the result
Wrinkle improvementMuscle reduction- Those seeking improvement in forehead lines, frown lines, and crow’s feet
- Those with developed jaw muscles resulting in a wider facial appearance
From ₩450,000 before VAT
How Anti-Wrinkle Injection works
Revinas
Precise lifting deep into the skin
Jawline improvementFacial contour correction- Those with severe skin adhesion from prior treatments
- Those seeking better results than previous lifting procedures
From ₩800,000 before VAT
How Revinas works
CoolSculpting
Selectively reduces fat cells in the areas you choose, without surgery
Non-surgical fat reductionBody contour improvement- Those who want to reduce overall body volume
- Those who want to remove fat in specific areas such as the flanks or lower abdomen
From ₩550,000 before VAT
How CoolSculpting works
Questions patients ask about V-Line Slim Injection
How much does the V-Line Slim Injection cost in Seoul?
Who is it suitable for?
What is the procedure — does it hurt?
What should I avoid afterwards?
When do results appear and how long do they last?
Sources and related searches
People also search: double chin treatment Seoul · Kybella alternative Korea
About Dr. Hongseok Kim
Dr. Kim performs your V-Line Slim Injection himself — from the first skin analysis to the follow-up check.
Dr. Kim focuses on aesthetic dermatology — skin regeneration, facial contour and healthy aging — and builds each plan from a close look at the individual patient's skin and goals, aiming for natural, refined results.
At VOS the same specialist is responsible for the whole course of care: diagnosis, the procedure itself and follow-up. An accurate reading of skin structure and how it changes is what makes results more complete and keeps the risk of side effects low.
Credentials & appointments
- Current
- Medical Director, VOS Dermatology Clinic
- Board-certified dermatologist
- Education
- Graduated first in class, medical school
- Academic appointments
- Adjunct Professor, Dept. of Medical Aesthetics, Cheongju University
- Adjunct Professor, Dept. of Beauty Medical Science, Dongguk University
- Professional leadership
- Director, Korean Dermatologist Association (KDA)
- Director, Korean Association for Anti-Aging Dermatology (KAAD)
- Committees
- Academic Committee Member, Korean Dermatological Association
- Information Committee Member, Korean Dermatologist Association (KDA)
- Memberships
- Korean Society for Dermatologic Functional Medicine
- Korean Society for Laser Medicine and Surgery
Brand advisory
- Skincare
- The Scent
- SkinCeuticals
- La Roche-Posay
- AHC
- Bioderma
- Etat Pur
- Injectables
- Juvelook
- Revive
- Lafullen
- Rejuran
- Devices
- Ulthera
- Thermage
- Sofwave
- CoolSculpting
- Mirajet
Lecturing, live demonstrations and brand education — in Korea and across Asia.
- presentations & lectures listed
- 116
- years covered by the list
- 2016–2026
- in 2023, the busiest year listed
- 25
LectureJULIA SUMMIT GLOBALJuvelook Journey — invited lecture · 2025 
ConferenceAPS Korea 2026Aesthetic Plastic Surgery Korea · 2026 
Conference28th KDA Spring ConferenceKorean Dermatologist Association · 2026 
ConferenceKOREADERMA 2025COEX, Seoul · 2025 
Live demoIMLG 2025Live injection training for international physicians · 2025 
LectureJULIA SUMMIT ASIA 2025Presentation, Hong Kong · 2025 
Live demoIMLG 2025Faculty & attendees · 2025 
Brand eventSkinCeuticalsNext Beauty Code, Taiwan · 2025 
Live demoIMLG 2025Live demonstration, explained step by step · 2025 
Brand eventCOSRXBrand event, Seoul · 2025
Selected international & major meetings
- 2026
- APS Korea 2026
- 28th KDA Spring Conference
- Invited lecture, Baim Global Jupiter Symposium
- 2025
- JULIA SUMMIT GLOBAL – Juvelook Journey
- JULIA SUMMIT ASIA 2025Hong Kong
- KOREADERMA 2025
- SkinCeuticals: Next Beauty CodeTaiwan
- 9th KDA procedural skills training
- 2024
- AMWC-TDAC Taiwan
- Juvelook Launching Symposium in Taiwan
- KSDS 2nd International Congress Seoul
- 1st Ulthera Focus Group Meeting
Show 2 earlier yearsShow fewer
- 2023
- AMWC Japan
- 41st Annual Meeting, Japanese Society of Aesthetic Dermatology
- ACDS 2023
- MEVOS Dalian
- 2022
- ASLMS (American Society for Laser Medicine & Surgery)
- 13th I-SWAM Indonesia Convention Exhibition
Broadcast
- Morning N — hyperhidrosis and choosing cosmetics
- “Golden time of skin lifespan” (Jul 2021)
- Park Yong-kwan's Radio Show — regular Monday guest
- Good Morning — spring sunlight and skin (Mar 2023)
- Jo Woo-jong's FM Daehaengjin — Dr. Family corner
- Men On Air — summer skin care
Papers & books
- Juvelook Comparative Pain Assessment
- Cosmetic Counseling Expert Course
- Cosmetic Ingredients for Skin Care
Source: VOS Dermatology's official Korean profile of Dr. Kim.
Meet Dr. KimCreators who filmed their treatment at VOS.
Each video comes with Dr. Kim's notes on what was done, why, and the listed price. Opinions are the creators' own; results vary.
Thulium Laser, CO₂ Spot Removal and Nuviju in Seoul: A Real Case
Manel stopped posting because she no longer liked her skin. I explain her one-visit plan: a full-face thulium laser, CO₂ for spots and Nuviju for the chin and jawline.
Gouri and Belotero Revive in Seoul: A Mother’s Skin Booster Case
Rina brought her mother, visiting from abroad, for a surprise skin treatment. I explain why we paired Gouri, a PCL collagen stimulator, with Belotero Revive, and what to expect.
Juvelook, Anti-Wrinkle Injection and Rejuran Lips in Seoul: A Natural Refresh Case
Oxana wanted to refresh her lower face and neck without looking done. I explain her combination of laser, Juvelook, anti-wrinkle injection and Rejuran in the lips, and why lips can be treated for quality, not volume.
Redness, Pores and Uneven Tone in Seoul: A Real Patient Case
Aizhan came to Seoul with three concerns at once: redness, enlarged pores and uneven tone. I explain how I build one plan for skin like hers, and what it realistically changes.
Skin Smoothing Injection + ECM Booster in Seoul: A Real Case for Textured Skin
Heli’s skin looked textured and stiff even under makeup. I explain why we paired skin smoothing injection with an ECM booster, what ECM actually means, and how the plan was built for her skin.
Skin Smoothing Injection + Rejuran HB in Korea: A First-Timer’s Real Case
Suhandi was scared of needles and had never had a skin treatment. I explain why we paired skin smoothing injection with Rejuran HB, what the session felt like, and when results show.
Ultherapy Prime for a Double Chin in Korea: A Real Case
Krisha flew to Seoul to tighten the area under her chin. I explain what Ultherapy Prime does there, when a double chin is fat rather than laxity, and what to expect after.
VOS Dermatology Blog
Plain-language guides written by Dr. Hongseok Kim, board-certified dermatologist — treatments, recovery, cost and planning your visit to Seoul.
Rejuran Healer vs Juvelook: Which Fits? Recovery, Risks, Days
Rejuran healer vs juvelook: both leave small bumps for a few days, but Juvelook builds over weeks. VOS Dermatology, Gangnam, on trip length and sessions.
Korea Rejuran HB Consultation Booking Appointment: Who Fits?
Planning a Korea Rejuran HB consultation booking appointment? Who HB suits, what decides the cost and what to send first, from VOS Dermatology, Gangnam.
Rejuran How Long Does It Last? Results, Sessions & Upkeep
Rejuran how long does it last? After a full course, often several months. Dr. Hongseok Kim of VOS Dermatology, Gangnam, explains sessions and upkeep.
Rejuran Recovery Day by Day: When Do Bumps Go? Methods, Risks
Rejuran recovery day by day: bumps usually settle within a day or two, bruises take longer. Plan trip days, methods, risks. VOS Dermatology, Gangnam
Juvelook Soft vs Volume: Which Fits? Cost, Reviews, Recovery
Juvelook soft vs volume: the lighter form treats crepey skin, Volume adds support. Dr. Hongseok Kim on cost, reviews, recovery. VOS Dermatology, Gangnam.
Korea Thermage FLX Procedure Steps in Order: Who Should Wait?
Korea Thermage FLX procedure steps in order, who should wait, what decides the cost, and recovery, from Dr. Hongseok Kim of VOS Dermatology, Gangnam.
What international patients wrote on Google Maps.
Screenshots of public reviews left on Google — in their own words, unedited. Experiences and results vary from person to person.
Before you book, hear it from the doctor himself.
Slide through 17 videos on lifting, skin boosters and traveling for treatment. Korean audio — everything plays right here.
Travel"Flying tomorrow, no bruising or swelling?" Top 3 No-Downtime Lifting (Ultherapy prime,Sofwave,Opus)
LiftingAfter Ulthera & Thermage, What's Next? Dermatologist with 21 Years of RF Experience Breaks It Down!
Skin boostersA Dermatologist with 21 Years of Experience Breaks Down the Skin Booster Family Tree
JuvelookMust-Know Before Getting JuveLook! | What It Can & Can’t Do, Clinic Tips by Dr.DTS
JuvelookPairing Juvelook with This Can Double the Firming Effect (And Ease Nodule Concerns)
JuvelookEverything About Juvelook — Effects, Real Treatment Review, Rejuran Comparison
Skin boostersDoctors Won’t Talk About This Treatment Yet… So I’m Revealing Everything | ECM Skin Booster Q&A
Skin boostersWhy does 'that' super famous skin booster contain 'filler' ingredients?
Skin boostersGOURI Is Korea’s Hottest Skin Booster — But What About the Bruising?
Anti-agingSurface Treatments vs Deep Treatments | Which One Actually Makes You Look Younger?
AftercareDid you just pay a fortune for a dermatology treatment? You'll 100% regret skipping this video.
Dr. KimSorry to my patients... I tried it on myself first (21-Year Derm's Self-Treatment Full Process)
BodyTrapezius Slimming for Sharp Shoulders ✨ How to Get That Clean, Angular Look (Spring/Summer Must)
Travel22-Hour Flight + High-Altitude UV: The One Thing a Dermatologist Used the Whole Time
ResearchScientists Erased a “Mark of Aging” Once Thought Irreversible | A New 2026 Aging Study | Dr. PIALNAM
PoresWhy Your Pores Won’t Shrink | What Actually Works? | Dr. DTS
SkincareWhy Your Expensive Vitamin C Isn’t Working｜How to Use It for Better Absorption｜Dr. PIALNAM
VOS Shorts
Get to know VOS in seconds — 60-second answers from Dr. Kim to the questions you’d ask in the chair. Everything plays right here.
How to get Juvelook without side effects
How long does Sofwave last?
Boost Your Results with Sofwave!
RE-TOURN! It's Different from Collagen Injections
Juvelook Skin Rejuvenation Effects
How many Ultherapy Prime shots are enough?
Want to look younger!?
Skin Booster: Myths and Facts
Most of Your Allergy Test Results Came Back Positive?! You Might Have OOO Syndrome!
More Isn’t Always Better!? How to Properly Use Moisturizer
Does Snail Cream Actually Contain Snails?
Hands-Free Exercises to Smooth Out Smile Lines
The Secret Habit of People Who Stay Healthy and Live Longer (Worth Millions)
Cleansing oil for sunscreen? Double cleansing? You’ve been doing it all wrong...
Father's Wisdom on Shaving (Secret to Avoiding Cuts)
If nothing you apply stops the dryness
What if you blindly apply too much sunscreen without knowing 'this ingredient'? Your skin will br...
2 Skincare Ingredients a Dermatologist Will Never Use (Be Extra Careful!)
Ready to ask about V-Line Slim Injection?
One message on WhatsApp is enough to start. No forms, no commitment.