In the fierce competition among over 400 Dermatology clinics in Gangnam District, Seoul, most of these clinics are instantly recognizable – their names appear on REDnote posts, in overseas travel advertisements, and in tweets by KOLs in airport duty-free shops. However, there is another type of clinic for which you hardly find any advertisements at all; yet locals always mention them and recommend them to others, saying: “That clinic has three directors who all graduated from Wonjin, and their Thermage treatments are particularly reliable.”
DIAR Dermatology is precisely such a clinic that sparked considerable discussion in the industry even before its opening. It quietly opened its doors at the KI Building in Seocho District at the end of 2025, without any endorsements or grand opening promotions. Yet, thanks to a team of three directors with a combined medical experience of over 70 years, it quickly became “the most noteworthy new force” in the Gangnam medical aesthetics community. In this article, we delve into every detail about DIAR – from its location, the backgrounds of its directors, its popular treatments to their actual prices – to help you make well-informed decisions before you decide to visit.
I. Comprehensive Guide to Transportation and Location of DIAR Dermatology: 10th Floor, Seocho KI Building, easily accessible via two subway lines
The DIar Dermatology clinic is located on the 10th floor of the KI Building, at No. 8, 69 Gangnam-daero, Seocho-gu, in the heart of Seoul’s Gangnam area, an ideal location with three major advantages:
- Excellent transportation: It is only about 5 minutes’ walk from Exit 3 of Sinnonhyeon Station on Line 9 of the subway, and about 8 minutes’ walk from Exit 10 of Gangnam Station on Line 2 of the subway. With coverage provided by both lines, there is no need to take a taxi or take a detour.
- Excellent surrounding facilities: The Starfield COEX mall is right below the clinic, so you can go shopping or dining immediately after your treatment without wasting a single minute.
- High privacy: An independent elevator leads directly to the 10th floor, ensuring complete isolation from SISUN in the street below – perfect for high-end clients who wish to remain anonymous.
| Project | Details |
|---|---|
| 📍 Chinese address | 10th Floor, KI Building, 8 Gangnam-daero, 69-beon, Seocho-gu, Seoul |
| 🇰🇷 Korean-language address | 10th Floor, Kai-A Tower, 8 Gangnam-daero 69-gil, Seocho-gu, Seoul |
| 🚇 The nearest subway station (1) | Exit 3 of Sinnonhyeon Station on Line 9, about a 5-minute walk |
| 🚇 The nearest subway station (No. 2) | Exit 10 of Gangnam Station on Line 2, about 8 minutes on foot |
| 🕐 Weekdays (Monday to Friday) | 10:30 – 20:00 |
| 🕐 Saturday | 10:30 – 17:00 |
| 🕐 Sunday | Closed for consultations |
| ☎ Reservation phone number | 02-532-8828 / 02-533-8828 |
| 🅿 Parking | SeoHo Building (No. 10, 69 Gangnam-daero): After parking, turn left and walk straight ahead. |
🛬 Direct access from Incheon Airport: Take the airport subway to Gangnam Station, or take a taxi for approximately 28,000 Korean won (equivalent to around 150 RMB). Taking the road directly is also an option, and traffic jams are less likely to occur.
II. The two or three directors who “left Wonjin”: Why is DIAR Dermatology worthy of trust in 2026?
The core selling point of diar has never been its equipment, but rather its people. The three directors together have over 70 years of medical experience, and all of them have held top positions in large medical institutions – something that is quite rare in South Korea’s medical aesthetics industry.
Before its official launch, there were rumors within the industry regarding DIar: “Those are three people who left large companies to start their own businesses on their own.”
III. Director Li Shengtian: A doctor with experience working in Antarctica, and the developer of the “layered system” for anti-aging treatments in Asia
Dean Lee Seong-tian has been practicing medicine for 26 years. He graduated from the School of Medicine at Hanyang University and obtained the qualification to practice as a specialist in Dermatology at Seoul National University. The dermatology training program at Seoul National University is considered one of the most rigorous in South Korea, and very few people are able to successfully complete it.
He also has a unique experience in his background: he served as a doctor on the wintering team at the King Sejong Station in Antarctica. His experience in dealing with complex skin problems under extreme climatic conditions has enabled him to gain a much deeper understanding of the process of repairing the skin barrier than ordinary Dermatology doctors.
More importantly, Director Lee is a member of the “National Medical Knowledge Lifting Committee” of the Korean Medical Doctors Association. He has long been engaged in promoting public awareness of dermatology, which means that he is willing to clearly explain to patients “why this treatment plan is necessary” – rather than, as is common in many clinics, having the patient sit down while the nurse starts filling out forms and recommending treatment packages.
Director Li Shengtian’s core technical achievement is the “3D Skin Layered Management System” that he developed independently. This system analyzes facial aging issues at different layers – the epidermis (spots/darkening of skin tone), the dermis (loss of Collagen), and the fascia (tightness and sagging) – and formulates targeted treatment plans for each layer, which are then combined into a comprehensive treatment regimen. This is why his treatment plans usually involve a structured sequence of steps, such as “doing this procedure now, then this one in three months, and another in six months”. Such an approach ensures consistency and logic in the treatment process, rather than forcing patients to undergo all expensive procedures at once.
IV. President Liu Zhuangxi: Graduated from Hanyang University, with over ten thousand cases involving Wonjin treatments; the “Bell and Drum Thread Lifting” procedure achieves a naturalness score of 4.9.
President Liu Zhuangxi, who has been practicing medicine for 26 years and also graduated from the Medical College of Hanyang University, has served as a specialist physician and outpatient professor at Baik Hospital. Subsequently, he held various positions, including President of Miso Dream Dermatology, President of ANU Dermatology, and Director of the Plastic and Reconstructive Surgery and Dermatology Department at WONJIN Hospital.
During his tenure as the director of WONJIN, he accumulated over 10,000 clinical cases involving Thread Lifting. The “Bell-shaped Thread Lifting” technique, which he promotes at DIAR, is his signature procedure. This technique uses specially designed anchor-style threads with multiple fixation points, allowing for precise Lifting angles. As a result, the facial contours appear natural after the procedure, without any visible signs of plastic surgery. According to the user feedback data made public by the clinic, the postoperative naturalness score reached 4.9 out of 5, and the recurrence rate was 68%.
V. Director Zhang Huizhen: With an international medical background, her “Liquid Lifting Injection Technique” has achieved a repeat purchase rate of 82%.
Director Zhang Huizhen has been practicing medicine for 22 years. She graduated from the Faculty of Medicine at the Catholic University of Bolivia and received specialized training in Dermatology at a Japanese university hospital. She has previously served as the managing director of Renuva Skincare Clinic and Rejuvi Clinic. Proficient in English and Spanish, she is the team member best equipped to receive overseas patients.
What impressed people the most about her was her independently developed “layered injection technique” – the key lies in adjusting the injection sites of Filler according to the patient’s dynamic facial expression patterns, rather than applying the substance at “commonly prescribed points.” The advantage of this approach is that the results look natural after the procedure; smiles do not appear stiff or overly filled, and there is no issue where the face looks good when standing still but resembles a mask when smiling.
The repurchase rate of her Lifting treatment reached 82% – this is an extremely rare figure in the field of injectable cosmetic procedures, indicating that the results are indeed convincing enough to motivate customers to return for more treatments.
VI. Analysis of DIar Dermatology’s Signature Treatments: DIar Lifting, Thread Lift, Hydrating Glow Treatment, and Laser Procedures
DIar’s project framework is built around the logic of “layered anti-aging”: from the deepest fascia layer to the most superficial skin tone issues, each layer has its corresponding solution.
| Project categories | Representative technologies | Suitable for the problem at hand | Reference price |
|---|---|---|---|
| Lifting diar | Three-in-one combination of Ultherapy Prime, Thermage FLX, and ONDA Lifting | Problems such as deep fascia sagging and overall contour relaxation | Combination packages are available upon discussion. |
| Thermage FLX (5th generation) | 600 treatments for the entire face / 225 treatments for the eyes | Collagen regeneration for full-face tightening | The cost for a full face treatment ranges from approximately ¥2,100,000 to ¥2,400,000 (equivalent to around 11,000 to 13,000 yuan). |
| Meichao Ultrasonic Lifting | 300 treatments for the entire face / 100 treatments for the eyes | Fascial layer lifting to improve sagging at the corners of the eyes | The cost for a full face treatment ranges from approximately ¥1,200,000 to ¥1,500,000 (equivalent to around 6,500 to 8,000 yuan). |
| Thread Lifting (suture-based Lifting) | Bell Line / Rose Line / Mint Line | The line of the lower jaw, the base of the nose, and the contour of the zygomatic arch | The price is subject to discussion based on the number of wires required. |
| Titanium Lifting (Titanium Laser) | TITAN laser | Pores tightened, mild to moderate lifting effect, and improved skin quality | Approximately ₩800,000 to 1,000,000 (about 4,300 to 5,400 yuan) |
| Rejuran Glow Essence | Black box, 2 centum cores | Barrier repair, reduction of fine lines | Approximately ₩350,000 to 450,000 (about 1,900 to 2,400 yuan) |
| Juvelook | 4cc to 6cc | Provides long-lasting moisture and promotes collagen production | Approximately ₩500,000 to 700,000 (about 2,700 to 3,800 yuan) |
| Ultra-Pico laser | Single treatment for the entire face | Even skin tone, Pores, and freckles | Approximately ₩200,000 to 500,000 (around 1,100 to 2,700 yuan) |
| Filler injection | Rylan / Juvederm / Pure Fill | Tear trough correction, Nasolabial Fold Correction, Lip surgery | Rylan 1 centum core costs approximately ₩300,000 to ₩330,000. |
💡 Notes on the transparency of DIar prices: DIar clearly states that “the price paid at the clinic is the same as the online quote”; there is no additional charge for foreigners, nor are any extra fees added during the treatment. Users who have actually received treatment there report that doctors will even actively advise, “You might not need to proceed with this treatment right now; your skin condition doesn’t require it.” Such honesty is quite rare in Dermatology clinics in Gangnam District.
VII. How to Schedule a Consultation at DIar Dermatology through BeautsGO: Overcoming Language Barriers and Ending Information Asymmetry
Making an appointment with a Dermatology specialist in South Korea may seem simple in theory, but in practice, it’s quite different:
The BeautsGO reservation platform represents the most direct solution. As South Korea’s largest overseas medical beauty reservation service, BeautsGO has listed over 1,300 legitimate medical beauty clinics, and DIAR Dermatology is also among its partners.
- Download the BeautsGO App (available for iOS, Android, and WeChat Mini Programs; the traditional Chinese version offers full support).
- Search for “diar” or “diar Dermatology”.
- View the hospital page: address, information about the director, and price list of services offered.
- Select the desired treatment and appointment date, then submit your application.
- Wait for the institution to confirm (usually, a response is given within 30 minutes), and then attend the appointment on time.
ews of DIAR Dermatology: Detailed Accounts of Three Patients’ Treatment Experiences
Before making a final decision, the following three sets of experiences represent genuine user feedback gathered through various channels:
“I made my appointment through BeautsGO, and the customer service staff translated the questions I wanted to ask in advance and sent them to the clinic. When I arrived at the clinic, I followed the steps they had instructed me, and from registering to the actual consultation, I didn’t encounter any problems due to language barriers. After examining my skin, Dr. Li directly said, ‘Your current skin condition doesn’t require a full-face Thermage treatment; a 225-minute treatment for the eyes is enough. That will save you half the cost. Come back in three months for a follow-up evaluation.’ To be honest, this statement actually made me feel more at ease.” ——BeautsGO user Ms. @M, 38 years old, underwent eye Thermage treatment.
“I visited several clinics in Gangnam, but they all said that my Nasolabial Fold Correction and loose jawline required very expensive treatment packages. Director Liu at DIAR showed me a 3D scan and explained why the root cause of my problems lay in the structure of my cheekbones. Then she recommended a targeted treatment plan using sutures—just 6 Bell-shaped sutures, with clear costs listed. On the third day after the surgery, I was able to return to work as usual. My colleagues noticed that my complexion looked better, but no one could tell what treatment I had undergone. That’s exactly the result I wanted.” — Beauty Naver Blog, local user @kali_J from Seoul
“I have sensitive skin, but Dr. Zhang never pressured me to opt for high-intensity treatments. First, I had the Onda cryolaser treatment to repair my skin barrier, and only after two weeks of observation did she recommend the Juvelook glow treatment. She explained, ‘Different layers of the skin should be treated separately; otherwise, their effects will interfere with each other and reduce the overall results.’ I later realized that this is what true personalization really means—not just empty promises. After the treatment, the moisture content of my skin increased visibly, and my makeup removal problems were significantly improved.” — Rednote user @SeoulDermatologyTips
IX. Key Points of Postoperative Care at DIar Dermatology in 2026: Avoiding Common Mistakes to Ensure Longer-lasting Results
| Nursing services | Specific requirements | Duration |
|---|---|---|
| 🚫 Avoid high-temperature environments. | Within 1 week after the procedure, avoid using saunas, steam rooms, or high-temperature yoga. When washing your face, use water at a temperature not exceeding 38°C. | 7 days after the procedure |
| 🚫 Temporarily avoid intense physical activities. | After treatments such as Thermage and ultrasound lifting, it is advisable to avoid high-intensity aerobic exercise, as excessive sweating can interfere with collagen regeneration. | 3 to 5 days after the procedure |
| ☀️ Strict sun protection is essential. | After the laser treatment, apply SPF50+ physical sunscreen to avoid direct exposure to the sun. | 1 month after the surgery |
| 💊 Supplementing Collagen | Oral administration of Collagen peptides (at a dose of more than 5g per day) in combination with Thermage or ultrasonic lifting treatments yields even better results. | 3 months after the procedure |
| 💆 Gentle skin care | Within 2 weeks after the thread embedding procedure, avoid facial massage or vigorous cleansing treatments to prevent the displacement of the threads. | 14 days after the procedure |
| 🚭 Quit smoking and drinking | Tobacco and alcohol accelerate the degradation of collagen, significantly affecting the long-term effectiveness of Thermage/Hyperthermic Lift treatments. | It is recommended to wait for 2 months after the procedure. |
💡 Within 24 hours after the procedure, diar provides active follow-up care to monitor recovery progress and offers medical masks and repair essences. After returning to Taiwan, if you experience any discomfort, you can directly contact the hospital through BeautsGO’s Chinese customer service service—no need to muster the courage to make a call in Korean.
X. Those who are suitable for using diar: Who is most in need of adding diar to the “South Korea Medical Aesthetics Candidate List”?
DIar is not suitable for everyone. The following are the types of people who would be most suitable for using it:
- 🎯 For those over 30 years old who are looking for anti-aging solutions—especially regarding issues such as loose facial contours, blurred jawlines, or drooping eye corners—each of the three directors at DIAR has their own areas of expertise, enabling them to provide comprehensive and tailored solutions.
- 🎯 For those who have been disappointed by the “assembly line” approach in the medical beauty industry: If you have visited several clinics and felt pressured to undergo unnecessary treatments, DIar’s reputation for “clinic directors not promoting unnecessary services” will help you regain that sense of security you have lost.
- 🎯 Sensitive skin / skin with damaged barrier function: Director Zhang Hui-zhen has established a good reputation in the management of sensitive skin within South Korea’s local community. She avoids using strong treatments initially; instead, she focuses on repairing the skin’s barrier function before proceeding with other treatments.
- 🎯 For business professionals who value a short recovery period: After the thread-lifting procedure, it is possible to meet clients in just 3 days; after the Thermage treatment, you can return to normal activities the very next day. This makes it ideal for those on busy business trips who also need to undergo medical treatments.
- ⚠️ Situations that may not be suitable: When the budget is extremely limited (DIar targets the mid-to-high-end market), when one only wants to perform basic skin care treatments (it is recommended to seek out a professional skin care studio for better value for money), or when one intends to undergo a large number of different types of treatments at once (DIar will advise splitting these treatments into multiple sessions to avoid excessive spending).
XI. FAQ on Common Issues in Dermatology at DIar
Q1: Does DIar Dermatology provide Chinese-language support?
A: The clinic provides reception services in Chinese, English, and Korean, but the level of language proficiency may vary depending on the shift schedule on that day. It is recommended to make reservations through BeautsGO, as the platform offers full-support Chinese customer service. Before the procedure, you can have a list of questions translated and sent to the clinic, which will improve the efficiency of communication.
Q2: Does DIar accept tax refunds for foreigners?
A: Yes, diar supports South Korea’s medical treatment foreign exchange tax rebate policy. According to the latest regulations in 2026, certain medical beauty treatments are eligible for a 10% tax rebate. It is recommended that you ask the service staff for the relevant supporting documents when visiting the clinic.
Q3: What are the areas of expertise of each of the three hospital directors? How should one make a choice when selecting one of them?
A:
・ Di
rector Li Shengtian → Laser Thread Lifting, restoration of the skin barrier, customized multi-layer anti-aging treatment plans
・ Director Liu Zhuan
gxi → Thread Lifting using sutures (especially Bell-shaped sutures), extensive experience in operating various medical devices
・ Director
Zhang Huizhen → Injection fillers (liquid-based Thread Lifting), management of sensitive skin, specialized care for female patients
When
making a reservation through BeautsGO, please indicate your main requirements in the remarks section. Our customer service team will assist you in arranging the most suitable doctor for your needs.
Q4: What is the difference between Thermage and the diar Lifting treatment (the combination of ultrasonic lifting, Thermage, and ONDA)? Which one should I choose?
A: Thermage primarily acts on the dermis, promoting collagen regeneration. The effects are long-lasting but take 3 to 6 months to become fully visible. Ultrasound lifting (USL) has a deeper impact, reaching the SMAS fascia layer, thus providing more immediate and noticeable results. DIAR Lifting is a combination of these three technologies, suitable for users over 38 years old who have comprehensive anti-aging needs. For specific recommendations, it is best to undergo a 3D facial scan assessment by Director Li at the clinic, so that the most appropriate treatment plan can be determined based on the degree of your skin aging.
Q5: How far in advance should one schedule a consultation at the DIar Dermatology clinic?
A: After diar has established a good reputation in South Korea, it is recommended to book slots during peak periods 2–3 weeks in advance. Users who book through BeautsGO usually get priority in securing available times, as the platform has a cooperation agreement with the clinics.
Conclusion: Why choose DIar for Dermatology treatment in South Korea in 2026? It is certainly an option worth considering seriously.
There are countless Dermatology clinics in South Korea, but very few of them are truly worth returning to repeatedly. What makes DIar stand out is not its claim to be “the cheapest” or “the most famous”; rather, it is the fact that its three founders, after leaving large-scale medical organizations, chose a more honorable way to pursue their career—without relying on mass production or advertising, but solely on their technical expertise.
If you are planning a trip to Seoul with the goal of “taking serious care of your skin,” DIar Dermatology is definitely worth considering. To make an appointment directly or learn more about the services offered, visit the DIar Dermatology page on BeautsGO. The entire information is provided in Traditional Chinese, so you don’t need to know Korean to make an appointment.
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