Dr. Yoon-Gon Ryu — Laser Specialist & Medical Director at RE:BERRY Gangnam
Medical Director, RE:BERRY Clinic Gangnam
Revinas & JUVELOOK Key Opinion Leader | Korean Academy of Aesthetic and Laser Medicine
Evidence-based laser dermatology for every skin type — from precise pigmentation correction to advanced scar revision, guided by peer-reviewed science and conservative safety protocols refined for Fitzpatrick III–V skin.
Gangnam, Seoul — Near Gangnam Station (Line 2 / Sinbundang Line)
Book a Consultation with Dr. RyuWho Is the Aesthetic Medicine Specialist at RE:BERRY Clinic Gangnam?
As the leading Gangnam laser aesthetic medicine specialist at RE:BERRY, Dr. Yoon-Gon Ryu directs a four-physician team operating more than ten laser platforms. His practice focuses on melasma management, acne scar revision, and skin rejuvenation for international patients. With nine professional society memberships and dual KOL status, Dr. Ryu brings clinical depth and industry insight to every consultation at RE:BERRY Gangnam treatments.
Your Consultation Journey with Dr. Ryu
The consultation process at RE:BERRY Gangnam is designed for international patients who need clarity before committing to any procedure.
Initial Contact & Language Support
Reach out through WhatsApp to begin your journey. RE:BERRY's multilingual coordinators support eight languages — English, Japanese, Simplified Chinese, Traditional Chinese, Thai, Vietnamese, Mongolian, and Farsi. The team collects your skin concerns, medical history, and treatment goals before your visit. Virtual pre-consultations are available for patients planning their trip to Seoul.
In-Person Skin Analysis
At the Gangnam clinic, Dr. Yoon-Gon Ryu conducts a comprehensive skin evaluation using diagnostic imaging. He assesses your Fitzpatrick skin type, pigmentation depth, scarring severity, and overall skin condition. This analysis is essential because laser parameters safe for lighter skin types can cause post-inflammatory hyperpigmentation (PIH) on darker skin — a risk Dr. Ryu's conservative approach is designed to prevent.
Personalized Treatment Plan
Dr. Ryu recommends a tailored multi-modal protocol from over ten laser platforms, explaining device selection, parameter rationale, realistic expectations, session count, recovery timelines, and pricing. His approach to melasma laser treatment and acne scar laser treatment combines complementary technologies for synergistic results.
Treatment & Follow-Up
Treatments are performed by Dr. Ryu's medical team under his direct protocol guidance. Post-treatment instructions are provided in your language. Follow-up consultations are available in person or virtually for patients who have returned home.
Dr. Ryu's Credentials & Professional Journey
Dr. Yoon-Gon Ryu's career reflects progressive leadership across multiple aesthetic medicine institutions.
Career History (Verified)
Industry Recognition
Dual KOL status reflects Dr. Ryu's standing among laser and injectable specialists in Korea.
Professional Society Memberships (9 Verified)
- Regular Member, Korean Academy of Aesthetic Medicine
- Member, Korean Society for Stem Cell Research
- Member, Korean Association of Stemcell Therapy
- Member, Korean Academy of Anti-Aging Medicine
- Regular Member, Korean Society for the Study of Obesity
- Regular Member, Korean Academy of Filler
- Regular Member, Korean Academy of Aesthetic and Laser Medicine
- Regular Member, Korean Society for Hair Research
- Associate Member, Korean Society of Hair Restoration Surgery
All credentials verified from official RE:BERRY clinic records (PF-4 verification date: April 3, 2026).
Patient Results Under Dr. Ryu's Care
Dr. Ryu's results reflect his multi-modal treatment philosophy — combining complementary laser technologies to address conditions from multiple angles rather than relying on a single device.
Treatment Result Categories
- Melasma Improvement — Low-fluence laser toning protocols showing gradual, controlled lightening without rebound hyperpigmentation
- Acne Scar Reduction — Fractional and pico laser treatment combination protocols demonstrating measurable texture improvement
- Skin Brightening & Tone Evening — Picosecond laser series results showing uniform complexion restoration
- Pigmentation Clearance — Q-switched Nd:YAG laser toning outcomes for solar lentigines and post-inflammatory marks
Individual results may vary. Results depend on skin type, condition severity, and treatment adherence.
View the complete before and after gallery for detailed case documentation across all treatment categories.
Laser Expertise & The RE:BERRY Gangnam Medical Team
Dr. Ryu's Device Expertise
As a Gangnam laser aesthetic medicine specialist with access to one of Seoul's most comprehensive device arsenals, Dr. Yoon-Gon Ryu selects from the following platforms based on each patient's diagnostic assessment:
| Device | Wavelengths | Primary Applications |
|---|---|---|
| PicoSure (Cynosure/Hologic) | 755nm / 532nm / 1064nm | Pigmentation, melasma, tattoo removal |
| PicoWay (Candela) | 1064nm / 785nm / 532nm / 730nm | Multi-color tattoo, acne scars |
| Q-switched Nd:YAG (Lutronic Spectra XT, Fotona QX MAX, Cynosure RevLite SI) | 1064nm / 532nm | Laser toning, skin brightening laser |
| Fractional CO₂ Laser | 10,600nm | Deep acne scars, resurfacing |
| Erbium:YAG Laser | 2,940nm | Precision resurfacing |
| Diode 810nm | 810nm | Laser hair removal |
| IPL (Intense Pulsed Light) | Broadband | Redness, sun damage, IPL photofacial |
| Medical-Grade LED Panels | 630nm / 415nm / 830nm | Anti-inflammatory, LED light therapy |
| RF Microneedling | Radiofrequency | Skin tightening, pore reduction |
This multi-platform capability allows Dr. Ryu to build layered treatment protocols — for example, combining picosecond laser for pigment fragmentation with carbon laser peel for pore refinement and LED therapy for post-treatment recovery. All primary devices hold FDA 510(k) clearance and/or CE marking, ensuring international regulatory compliance.
The RE:BERRY Gangnam Medical Team
Each physician's credentials have been independently verified from official clinic records.
Dr. Dong Young Kim, M.D.
Graduated from Hallym University College of Medicine and completed the RE:BERRY Training Center Program. Lifetime Member of the Korean Association for Laser, Dermatology and Trichology (KALDAT), Member of the Association of Aesthetic and Laser Surgeons (ASLS), and Member of the Korean Filler Society. Dr. Kim supports Dr. Ryu's laser protocols with particular focus on energy-based device treatments.
Dr. Jin Su Jeon, M.D.
Family Medicine Specialist. Graduated from Catholic Kwandong University College of Medicine. Completed residency training at the National Medical Center and Kangdong Sacred Heart Hospital. Former Director of Toxnfill Incheon Guwol Branch. Member of KALDAT, ASLS, Korean Filler Society, and the Korean Society for the Study of Obesity. Dr. Jeon brings hospital-trained clinical rigor and broad-spectrum medical knowledge to the aesthetic practice.
Dr. Sung Joon Cho, M.D.
Graduate of Seoul Science High School and Hanyang University College of Medicine. Regular Member of KOAT (Korean Obesity & Aesthetic Treatment Association), KALDAT, the Korean Association of Private Medical Practitioners, and the Korean Society for Skin, Obesity, and Aesthetic Plastics. Dr. Cho combines strong academic foundations with specialized training in body contouring and skin rejuvenation.
Book a Consultation with Dr. Ryu
How to Book
Contact RE:BERRY Gangnam through WhatsApp (English) to schedule your consultation with Dr. Yoon-Gon Ryu. The multilingual coordination team will guide you through pre-consultation intake and appointment scheduling. For speakers of other languages: LINE (Japanese, Traditional Chinese, Thai), WeChat (Simplified Chinese), Zalo (Vietnamese), or Facebook Messenger (Mongolian).
What to Expect
Your initial consultation with Dr. Ryu typically lasts 15 to 30 minutes. This includes diagnostic imaging, skin analysis, treatment planning, and a transparent discussion of expected outcomes and pricing. There is no pressure to proceed with treatment on the same day — Dr. Ryu encourages patients to take time reviewing their personalized plan.
Virtual Pre-Consultation
For international patients planning their Seoul trip, RE:BERRY offers virtual pre-consultations. Share your skin concerns and photos with Dr. Ryu's team in advance to receive preliminary guidance on treatment options, expected number of sessions, and trip planning recommendations.
Getting Here
RE:BERRY Clinic Gangnam is located near Gangnam Station (Seoul Metro Line 2, Sinbundang Line) — one of the most accessible locations in Seoul. From Incheon International Airport, take the Airport Railroad Express to Seoul Station, then transfer to Line 2. From Gimpo Airport, take Line 9 and transfer to Line 2. The clinic is near COEX Mall and along Gangnam-daero, Seoul's main commercial boulevard.
My Treatment Philosophy
A personal note from Dr. Yoon-Gon Ryu, Medical Director, RE:BERRY Clinic Gangnam
When patients ask what sets my approach apart, I give the same answer I would give a colleague: I do not chase dramatic single-session results at the expense of skin safety. Every protocol starts with peer-reviewed evidence on wavelength selection, fluence thresholds, and pulse durations specific to the patient's skin type.
Korea is where laser toning was born. I trained within this tradition, learning why low-fluence, multi-session protocols outperform high-energy single treatments for melasma — particularly on Fitzpatrick III–V skin, which carries higher risk of post-inflammatory hyperpigmentation when parameters are too aggressive. This conservative approach is not timidity. It is precision.
As a Key Opinion Leader for both Revinas and JUVELOOK, I work at the intersection of clinical practice and product development — seeing emerging technologies and regenerative approaches before they reach general practice. My Korean Society for Stem Cell Research membership reflects genuine commitment to regenerative science as a direction shaping skin aging and recovery treatment.
What I tell every international patient: I will be honest about what laser treatment can and cannot achieve. Melasma is manageable, not curable. Acne scars can be significantly improved, but perfection is not a realistic promise. My job is to give you the best possible outcome using the best available evidence.
I combine technologies because skin conditions are rarely one-dimensional. A melasma patient might benefit from picosecond laser for deep dermal pigment, laser toning for maintenance, and topical protocols for prevention — all calibrated to work together. This multi-modal thinking is what ten-plus platforms enable at RE:BERRY Gangnam, and it is the philosophy I teach every physician on our team.
If you are considering laser treatment in Seoul, I welcome you to start with a conversation.
— Dr. Yoon-Gon Ryu
Medical Director, RE:BERRY Clinic Gangnam
Revinas & JUVELOOK Key Opinion Leader
Regular Member, Korean Academy of Aesthetic and Laser Medicine
The Science Behind Dr. Ryu's Laser Approach
Dr. Yoon-Gon Ryu's treatment protocols rest on established principles of laser-tissue interaction, refined through clinical research with emphasis on Asian skin types (Fitzpatrick III–V).
Picosecond Laser Mechanism: Photoacoustic Over Photothermal
Picosecond lasers deliver energy in trillionths of a second (10⁻¹² seconds), generating photoacoustic shockwaves that shatter pigment mechanically rather than thermally. Unlike nanosecond lasers that rely on photothermal effects, this reduced thermal footprint improves safety for Fitzpatrick III–V patients. Cho et al. (2017) demonstrated fractional picosecond laser efficacy for melasma with minimal adverse effects in a Korean clinical setting.
Dr. Ryu applies this across PicoSure (755nm/532nm/1064nm) and PicoWay (1064nm/785nm/532nm/730nm), selecting wavelength based on pigment depth and chromophore absorption.
Low-Fluence Q-Switched Nd:YAG: The Korean-Origin Laser Toning Protocol
Laser toning — Q-switched Nd:YAG at low fluence (1064nm, 1.6–3.5 J/cm²) over multiple sessions — was developed in Korea and represents a major contribution to dermatologic laser science. The mechanism uses subcellular selective photothermolysis: energy levels target melanosomes within melanocytes without destroying cells or triggering rebound hyperpigmentation.
Wattanakrai et al. (2010) demonstrated statistically significant melasma improvement with low-fluence Q-switched Nd:YAG in Asian patients, confirming reduced PIH risk compared to higher-energy alternatives — directly informing Dr. Ryu's parameter selection.
Negishi et al. (2013) validated the protocol in a prospective Japanese study, confirming sustained melasma improvement without significant rebound — supporting Dr. Ryu's multi-session approach.
Melasma: Why Multi-Modal Treatment Is Necessary
Melasma involves multiple contributing factors — UV-induced melanogenesis, hormonal influences, vascular components, and basement membrane disruption. No single laser modality addresses all pathways.
Kang and Ortonne (2010) established that effective melasma treatment requires addressing multiple pathogenic pathways concurrently. Combining laser treatment with topical agents and photoprotection produces superior outcomes versus laser monotherapy — shaping Dr. Ryu's protocols where laser toning is combined with picosecond treatment, topicals, and LED therapy.
Fractional Picosecond for Acne Scarring
Bernstein et al. (2017) demonstrated that fractionated, dual-wavelength picosecond laser with holographic optics produced significant acne scar improvement through controlled dermal remodeling. The fractional pattern creates micro-zones of treatment surrounded by untreated tissue, stimulating collagen reorganization — the foundation of Dr. Ryu's pico laser treatment protocols for scar revision.
Why Fitzpatrick III–V Skin Requires Conservative Parameters
Melanin-rich skin absorbs more laser energy at equivalent settings, increasing epidermal thermal load. Without fluence reduction, spot size adjustment, and cooling optimization, treatments safe on lighter skin become risky on darker types. Dr. Ryu's training within Korea's laser tradition — where patients are predominantly Fitzpatrick III–IV — means conservative parameterization is the starting point of every protocol.
- Cho SB, Park SJ, Kim JS, Kim MJ, Bu TS. "Treatment of melasma using a novel fractional picosecond laser." Lasers in Surgery and Medicine, 2017.
- Wattanakrai P, Mornchan R, Eimpunth S. "Low-fluence Q-switched neodymium-doped yttrium aluminum garnet (1,064 nm) laser for the treatment of facial melasma in Asians." Dermatologic Surgery, 2010. DOI: 10.1111/j.1524-4725.2009.01383.x
- Negishi K, Tanaka S, Tobita S. "Prospective study of treating melasma patients with a low-fluence Q-switched Nd:YAG laser." Journal of Cosmetic and Laser Therapy, 2013.
- Kang HY, Ortonne JP. "What should be considered in treatment of melasma." Annals of Dermatology, 2010. DOI: 10.5021/ad.2010.22.4.373
- Bernstein EF, Schomacker KT, Basilavecchio LD, Plugis JM, Bhawalkar JD. "Treatment of acne scarring with a novel fractionated, dual-wavelength, picosecond-domain laser incorporating a novel holographic optic." Lasers in Surgery and Medicine, 2017. DOI: 10.1002/lsm.22734
Frequently Asked Questions About Dr. Ryu
Dr. Yoon-Gon Ryu is the Medical Director and CEO of RE:BERRY Clinic Gangnam, Seoul. He is a Key Opinion Leader for Revinas and JUVELOOK and a Regular Member of the Korean Academy of Aesthetic and Laser Medicine, specializing in laser treatments for pigmentation, melasma, and acne scars.
Dr. Ryu holds the title of Medical Director (대표원장) at RE:BERRY Gangnam with four prior director-level positions at Korean aesthetic clinics. He maintains active membership in nine professional medical societies, holds dual KOL status for Revinas and JUVELOOK, and operates over ten laser platforms.
RE:BERRY Clinic Gangnam provides multilingual coordination staff supporting eight languages, including English. Clear communication is ensured throughout your consultation, treatment, and follow-up through dedicated coordinators who facilitate every conversation with Dr. Ryu's team.
The clinic operates more than ten platforms: PicoSure, PicoWay, Q-switched Nd:YAG systems (Lutronic Spectra XT, Fotona QX MAX, Cynosure RevLite SI), fractional CO₂, Erbium:YAG, diode 810nm, IPL, medical-grade LED panels, and RF microneedling — covering virtually every laser dermatology indication.
Contact RE:BERRY Gangnam via WhatsApp for English-language consultations. Additional messaging platforms include LINE (Japanese, Traditional Chinese, Thai), WeChat (Simplified Chinese), Zalo (Vietnamese), and Facebook Messenger (Mongolian). Virtual pre-consultations are available for international patients.
Yes. Dr. Yoon-Gon Ryu specializes in treating diverse skin types across the Fitzpatrick III–V spectrum and serves international patients from multiple countries. The clinic's eight-language support system and conservative parameter protocols are specifically designed for cross-cultural patient care.
Dr. Ryu takes an evidence-based, multi-modal approach to melasma. He is transparent about the condition being manageable rather than curable, combining laser toning, picosecond laser, and topical protocols with conservative parameters calibrated for each patient's skin type and pigment depth.
Yes. RE:BERRY Gangnam offers virtual pre-consultations for international patients planning their trip. Share your skin concerns and photos with Dr. Ryu's team to receive preliminary guidance on treatment options, expected sessions, and travel planning before you arrive in Seoul.
RE:BERRY Gangnam offers a verified four-doctor medical team, over ten laser platforms, evidence-based protocols grounded in peer-reviewed research, transparent pricing, eight-language support, and a safety-first approach — with a Gangnam laser aesthetic medicine specialist who holds dual KOL status and nine professional society memberships.
Four physicians: Dr. Yoon-Gon Ryu (Medical Director), Dr. Dong Young Kim (M.D., Hallym University), Dr. Jin Su Jeon (M.D., Family Medicine Specialist), and Dr. Sung Joon Cho (M.D., Hanyang University). All credentials verified from official clinic records. View the full treatment FAQ for additional questions.
What Patients Say About Dr. Ryu
— International patient, Southeast Asia (Fitzpatrick IV)
— Medical tourist, Middle East
— International patient, South Asia (Fitzpatrick V)
— Repeat patient, Japan