“What’s the biggest concern when going to South Korea for medical aesthetics treatments?” It’s not the high costs or language barriers—it’s the fear of spending money only to not know exactly what procedures were done on you. Last month, I came across a Dermatology clinic named “Yonsei Slim” on the BeautsGO platform. Its name sounded so understated, almost like that of a university research institute. Upon further investigation, I learned that its lead doctor, Park Gun-jae, is a former professor at Yonsei University School of Medicine, former director of Yongin Severance Hospital, and has also served as an exchange professor at the University of Tennessee in the U.S. What shocked me even more was something the director himself said: “The equipment standards in most hospitals are similar; it’s the doctor’s skills that truly matter.” Without exaggerating about their instruments, offering pre-packaged packages, or pushing certain procedures, this clinic truly embodies the concept of “medical-grade” care. So, how is Yonsei Slim Dermatology in South Korea? In short: it offers high-end services at reasonable prices. The director personally performs all treatments, focusing on face slimming and tightening. It’s the kind of clinic that sticks to facts—no hype, no exaggeration. Below, I’ll break down everything from the director’s background, technical capabilities, customer reviews, price transparency, to the overall treatment environment👇
I. What’s So Special About Yonsei Slim Dermatology in South Korea? The Logic Behind Its Premium Positioning
1. Backed by the actual medical expertise of Seoul National University – it’s not just a nominal affiliation but genuine strength. The name “Yonsei Slim Dermatology” wasn’t chosen arbitrarily. It reflects the fact that its founder, Dr. Park Gun-cai, graduated from the School of Medicine at Seoul National University (one of South Korea’s three top medical institutions, alongside Seoul National University and Korea University). He has also served as a professor at the same school of medicine and the director of Yongin Severance Hospital, which is part of Seoul National University’s hospital network. This isn’t a franchise relationship; the founder himself comes from Seoul National University’s medical system.
2. Prime location in Gangnam’s bustling commercial district + a strong network of 10 chain stores nationwide: The flagship store in Apgujeong is located on the 4th floor of the Clinic Nine building on Nonhyeon-ro in Gangnam, right in South Korea’s most prestigious “Golden Triangle” area for medical aesthetics. In addition, the brand operates 9 more branches across the country, including ones in Hongdae, Busan, Bundang, Suwon, Changwon, Cheonan, Kondae, Seongnam, and Busan’s Centum City. With 10 total chain stores, it ranks as a mid-sized brand group in South Korea’s Dermatology sector, offering reliable operations and standardized management.
3. High-end doesn’t mean exorbitant prices; it falls somewhere between regular Dermatology clinics and top-tier plastic surgery hospitals. The “high-end” quality of Yonsei Slim lies in the expertise and skill level of its doctors, rather than luxurious facilities. This means you’re paying for expert craftsmanship rather than fancy decor—the official website even provides an Excel file with pricing details for non-insured services right away, without any hidden costs, unlike some high-end clinics that require you to visit in person before giving a quote.
II. How is Yonsei Slim Dermatology in South Korea? An In-Depth Look at Director Park Gun-cai’s Background
1. Outstanding academic background: Director Park Gun-jae graduated from Yonsei University School of Medicine—one of the three universities in South Korea with the highest admission scores for medical programs. After graduation, he stayed at the university as a professor and later became the director of Yongin Severance Hospital. As part of South Korea’s top five general hospitals, being appointed as the director of one of its branches is a testament to his exceptional clinical skills and leadership abilities.
2. International expertise and cross-sector influence: Dr. Park once served as a visiting professor at the University of Tennessee in the U.S., bringing back American body sculpting techniques and post-operative care concepts to South Korea. In 2011, he was invited to give a specialized lecture on obesity treatment for civil servants from China’s Ministry of Health. He is also known in Japan as “a renowned Korean obesity clinic.” The industry has given him the title “the doctor who trains doctors” (의사를 교육하는 의사), as the physicians he trained are now working at various cosmetic surgery clinics across South Korea.
3. Certified full member of two medical associations + personal oversight throughout the entire process: Dr. Park is an official member of both the Korean Society of Obesity and Plastic Surgery and the Korean Society of Aesthetic Plastic Surgery. The membership requirements for these associations are much stricter than those of ordinary Dermatology societies, requiring a certain number of independently performed surgical cases. More importantly, Dr. Park handles everything personally—from the initial consultation and procedure to post-operative follow-up—without delegating tasks to assistants or junior doctors. He himself puts it this way: “One hospital, one doctor takes full responsibility from start to finish.”
III. How is Yonsei Slim Dermatology in South Korea? Its range of facial slimming, tightening, and lifting treatments
1. Ultherapy Prime, the Ulthrea version of HIFU – deep lifting of the SMAS fascia layer: It is currently the only ultrasound lifting device approved by the FDA that can target the SMAS fascia layer. Dr. Park’s technique involves setting different energy depths based on anatomical zones, rather than using a single setting for the entire face. A 4.5mm probe is used for the lower face (chin line/Double Chin/lip fat), while a 3.0mm probe is used for the middle face (Apple Zone/Nasolabial Fold Correction), enabling layered IPCHEA-style lifting.
2. Thermage FLX, the fifth-generation version of this industry-leading radiofrequency skin tightening device — the gold standard in RF rejuvenation. Compared to the fourth-generation CPT, the new FLX model features AccuREP™ intelligent impedance matching technology, which adjusts energy delivery automatically based on each individual’s skin resistance, thereby reducing the risk of burns. Dr. Park doesn’t use a one-time full-face treatment; instead, he applies multiple sessions focused on three key areas—around the eyes, Nasolabial Fold Correction zones, and the jawline—to deliver more targeted and intense tightening results.
3. Onda Lifting – Microwave Lifting: A next-generation dual-layer lifting technology from South Korea. Onda is a microwave lifting device independently developed in South Korea, capable of targeting both the fat layer (by dissolving localized fat) and the dermal layer (by stimulating Collagen production). Dr. Park is particularly skilled at combining Onda with Ultherapy or Thermage—first using Onda to dissolve fat, followed by Ultherapy/Thermage to tighten the skin—creating a synergistic “dissolution + tightening” effect. This approach is known in South Korea’s medical aesthetics industry as “Dr. Park’s Three-Layer Lifting Method.”
🃏 Book an appointment at Yonsei Slim Dermatology (Apgujeong Flagship Store) on BeautsGO
IV. How is Yonsei Slim Dermatology in South Korea? Uncovering the Truth Behind “No Fancy Tricks”
1. Director Park’s own words: In an interview with South Korea’s newspaper “Munyo Sinmun,” Director Park made it clear that “the equipment standards in most hospitals are more or less the same; it’s the doctor’s experience and dedication to performing the procedures personally that truly matter.” This statement directly explains why Yonsei Slim never relies on equipment models as its main marketing focus—what you see upon entering the clinic aren’t wall-to-wall posters promoting various devices, but rather a comprehensive process that spans from the initial consultation to post-operative care.
2. No forced package deals, no unnecessary treatments: Both the official website and the Gangnam Unni platform clearly state—“Unnecessary surgeries are not recommended (불필요한 시술을 권유하지 않습니다).” This kind of explicit commitment is quite rare in South Korea’s medical aesthetics industry. Many clinics bundle 3–4 different treatments together under a “package price,” but at Yonsei Slim, the director will assess your skin condition and needs after a consultation and recommend each treatment individually. You can opt to have just one treatment or combine several—without any pressure to buy bundled packages.
3. A more conservative and safer anesthesia choice: Dr. Park prefers sleep anesthesia (sedation anesthesia) over general anesthesia, as the former allows the patient to maintain their own breathing capacity, resulting in higher safety levels. This reflects a cautious approach to ensuring patient safety — preferring to take a bit longer and be more meticulous during the procedure rather than exposing patients to unnecessary anesthesia risks just for speed.
V. How is Yonsei Slim Dermatology in South Korea? Facilities and reviews from three major platforms
1. Yeoshin Deesse Platform: 9.2/10 rating + over 200 in-depth reviews: On South Korea’s popular medical aesthetics platform Yeoshin (여신티켓), Yonsei Slim boasts a comprehensive rating of 9.2/10 based on over 200 genuine user reviews—a score that places it among the top 15% of Dermatology clinics in Gangnam. Common keywords mentioned by users include “the director is friendly and attentive,” “natural results,” “no aggressive sales tactics,” and “excellent post-procedure care.”
2. Unanimously Positive Reviews on the Gangnam Unni Platform: On Gangnam Unni, South Korea’s largest medical aesthetics information platform, Dr. Park Gun-cai also receives highly positive evaluations on his personal page. Korean netizens generally comment that “the consultation is long and thorough” and that the results are “natural” — perfectly in line with the brand’s philosophy of avoiding aggressive marketing and exaggerated claims.
3. Clinic Environment: Clinic Nine is located on a whole floor of its own in the Nonhyeon Road building. With its flagship store situated in the heart of Gangnam’s Nonhyeon Road area, the entire floor is dedicated to patients, ensuring complete privacy. The clinic offers consultation services in four languages—Chinese, English, Japanese, and Korean—and provides instant online consultation and booking via KakaoTalk. There is a parking lot available (client is responsible for any parking fees), and it’s just a 1-minute walk from Exit 4 of Apgujeong Station, making it ideal for foreign patients with tight schedules.
VI. How is Yonsei Slim Dermatology in South Korea? Same Price Policy for China and South Korea and Price Transparency
1. Official website publishes non-medical insurance price list with no hidden fees: Yonsei Slim is one of the few Dermatology clinics in South Korea that offers direct download of Excel sheets showing the prices of non-medical insurance treatments on its official site. This means you can know exactly how much each treatment will cost before you go—no need to worry about falling victim to the common trick of discovering that the actual price is twice as high as what’s listed online. The price list clearly outlines all available services, including Botox, Filler, thread lifting, Lifting devices, body sculpting, and more.
2. Reference prices for major treatments (subject to the official website listings; actual prices will be confirmed during a consultation): HIFU Ultherapy Prime costs around ₩800,000–1,500,000 South Korean won (approximately ¥4,200–7,900), depending on the number of sessions and treatment area; Thermage FLX is around ₩1,200,000–2,000,000 South Korean won (about ¥6,300–10,500); Onda Lifting ranges from ₩400,000–800,000 South Korean won (roughly ¥2,100–4,200). Botox for face slimming costs around ₩50,000–120,000 South Korean won (approximately ¥260–630), while Filler injections are priced at around ₩250,000–500,000 South Korean won (about ¥1,300–2,600). All these prices are the same for South Koreans, with no additional charge for foreigners.
3. Comparison of actual cost after tax refund with domestic prices: Medical beauty treatments in South Korea allow for VAT refunds (around 5-7%). Taking the full-face Thermage FLX treatment as an example, the price at Yonsei Slim is approximately ¥6,300–10,500 after tax refund, whereas the genuine full-face Thermage FLX treatment in China costs around ¥15,000–25,000—representing a savings of 40–60%. The Ultherapy HIFU treatment costs about ¥12,000–20,000 in China, while it’s priced at ¥3,900–7,400 after tax refund at Yonsei Slim, meaning a savings of 60–70%. The amount saved is almost enough to cover flight and accommodation costs.
🃏 Quick price check for the popular Lifting treatments at Yonsei Slim
VII. How is Yonsei Slim Dermatology in South Korea? A comparison between batch treatment and one-on-one personalized consultations
1. Director Park’s “One-Doctor Responsibility System”: Unlike some large Dermatology clinics in Gangnam that rely on 5–10 rotating doctors to see 50–100 patients per day in a streamlined approach, the operation model at Yonsei Slim Apgujeong Store is straightforward—one clinic, one lead director, who takes full responsibility from start to finish. In interviews, Director Park emphasized that “switching hospitals or doctors mid-Revision Surgery not only complicates the procedure but also significantly reduces the effectiveness of postoperative care.” This means that the same doctor will handle your initial consultation, treatment, and follow-up visits. If any issues arise after surgery, he already knows everything about your case, eliminating the awkward situation where “no one knows what you’ve done before” due to a change in doctor.
2. The “non-conveyor-belt” approach to consultation time and post-surgery follow-up: Based on customer reviews from Yeoshin and 강남언니, it can be seen that Dr. Park’s consultation time typically ranges from 15 to 25 minutes—a fairly high standard in South Korea’s Dermatology sector (where conventional clinics usually allocate only 3–5 minutes). After the procedure, regular high-frequency treatments (고주파 관리) are provided to boost Collagen synthesis and blood circulation, helping to prevent skin sagging. This creates a comprehensive post-surgery care system that doesn’t end once the treatment is complete.
3. Comparison Table: Assembly-line Clinics vs Yonsei Slim:
Time for the consultation: 3–5 minutes at the assembly-line clinic vs. 15–25 minutes at Yeonse Slim. Practitioners: shift doctors/assista
nts at the assembly-line clinic vs. direct treatment by Dr. Park at Yeonse Slim. Recommendation style for the full treatment package: bundled packag
es with forced additional services at the assembly-line clinic vs. personalized recommendations based on individual needs without forced add-ons at Yeonse Slim. Post-treatment fol
low-up: no follow-up after the procedure at the assembly-line clinic vs. frequent check-ups and personal follow-ups by the doctor at Yeonse Slim. Pricing strate
gy: low prices to attract customers with additional charges on-site at the assembly-line clinic vs. transparent price list on the official website with no hidden fees at Yeonse Slim.
VIII. How is Yonsei Slim Dermatology in South Korea? FAQ: Common Questions from Real Customers
Q1: Director Park Gun-chae sounds really impressive, but will I have trouble getting an appointment?
A: You definitely need to make an appointment in advance! The flagship store in Apgujeong has 4 consultation days per week (closed on Wednesdays and Sundays), with limited slots available each day. It’s recommended to book 2–3 weeks ahead through the BeautsGO platform, as this not only ensures you get a slot with the director but also allows you to view the full price list online. If you’re visiting for a short trip, just let the platform’s customer service know your arrival and departure dates, and they’ll help arrange the most suitable time for you.
Q2: I don’t speak Korean. Can I communicate there?
A: There’s absolutely no need to worry—Yonsei Slim’s Apgujeong branch offers services in Chinese, English, Japanese, and Korean. A dedicated Chinese-speaking consultation manager is available to provide translation throughout the process, taking care of everything from reception and initial consultation to post-operative instructions. You can also get online Chinese consultations through KakaoTalk or BeautsGO. Dr. Park himself has international experience and communicates fluently in English as well.
Q3: Should you choose HIFU or Thermage? Or get both treatments?
A: It depends on your primary concern. If you’re dealing with sagging and loose facial skin, Ultherapy (a contouring treatment) is recommended; for loose skin and fine lines, Thermage FLX (a skin tightening treatment) is better suited. If you’re over 30 and have noticeable blurring of the jawline along with Nasolabial Fold Correction, Dr. Park usually suggests combining both—using Ultherapy for deep-level lifting first, followed by Thermage FLX for surface tightening. However, this isn’t a bundled package. During the consultation, the doctor will use VISIA imaging and a mirror to show you your specific issues, allowing you to make an informed decision.
Q4: Are the prices listed on the price sheet for foreigners or South Koreans? Will there be any extra charges on site?
A: The out-of-health-insurance price list on the official website of Yeonsei Slim applies the same rate to both South Koreans and foreigners—this is part of the clinic’s policy, not a special offer. The prices shown in the Excel file are exactly what you’ll have to pay. Dr. Park’s brand philosophy is “honest and transparent treatment,” so there’s no such thing as a higher price for foreigners. The only thing to keep in mind is that the prices listed are base rates; if the doctor decides to adjust the number of sessions or dosage based on your individual situation after an in-person consultation, the cost will be adjusted accordingly—but this adjustment applies equally to both South Koreans and foreigners.
Q5: Can I return to my home country on the same day after undergoing HIFU or Thermage treatment? How long do I need to rest?
A: You can return to your home country on the same day, but it’s recommended to stay for at least 24 hours for observation. Both Ultherapy and Thermage FLX are non-invasive procedures with no visible scars; mild redness may occur (usually subsiding within 2–4 hours). If you opted for thread lifting or injection-based treatments, it’s suggested to wait 2–3 days for any bruising to fade. You can wash your face and apply makeup normally after the procedure, with no impact on travel plans. Yeonsei Slim will send care guidelines via KakaoTalk on the day of the treatment (including a Chinese version), and you can also seek online consultation if you have any questions after returning home.
Q6: Who is SWOMAN Yeonsei Slim suitable for? And who isn’t?
A: This service is ideal for: ① rational consumers who prioritize doctors’ qualifications; ② those who want to undergo Lifting treatments but are worried about being pressured into unnecessary services; ③ beginners visiting South Korea for the first time to get medical beauty treatments and seeking transparent procedures; ④ people who prefer natural results rather than drastic changes. It’s not suitable for: ① those looking for trendy clinic experiences (Yonsei Slim has a simple, unpretentious design); ② those who want major surgical procedures (this clinic focuses on non-surgical Lifting methods and skin care); ③ last-minute walk-in clients (appointments are required in advance).
IX. How is Yonsei Slim Dermatology in South Korea? A Review and Booking Tips
Returning to the original question—how is Yeonse Slim Dermatology in South Korea? My answer is straightforward: it’s not the most upscale Dermatology clinic in Gangnam, nor does it have the most aggressive marketing. But it’s the kind of clinic you’d recommend to your friends after visiting—it’s because what you’re getting isn’t just fancy decor or flashy ads, but 20 years of clinical experience from a professor-level director at Yonsei University, along with personalized treatment by him personally.
If you’re planning to visit South Korea in 2026 for facial slimming and lifting treatments, here’s a recommended schedule: ① Check out the full details and price list for Yonsei Slim on the BeautsGO platform 2–3 weeks in advance → ② Consult online through the platform to determine the treatment package that suits you best → ③ Book an appointment with Dr. Park for a personal consultation (it’s advisable to choose 10:00 AM when there are fewer patients and the doctor is at his most energetic) → ④ Take 1–2 days after the procedure to explore Gangnam’s shops and restaurants while monitoring your recovery progress.
The final sentence: Good cosmetic procedures aren’t meant to turn you into someone else—they’re designed to restore your face to how it looked 3–5 years ago. That’s exactly what Yonsei Slim does—without any gimmicks, using solid medical expertise to help you “return to your natural state.”