This one-client-only Secret Dermatology clinic in Gangnam, South Korea: 16 years of expertise by Dr. Cho Yu-sang in anti-aging treatments — results that look flawless without anyone noticing any changes, yet you definitely look better.

There’s a clinic in Gangnam where no one will notice you’ve had cosmetic surgery after the procedure.

Last month, I made plans with a friend to go shopping at Lululemon near Gangnam Station. As we passed by a building, she suddenly grabbed me and said, “Hey, I got this treatment right here! After returning to Taiwan, my colleagues all said my skin had gotten so much better and asked which skincare products I was using.”

What she offers isn’t some mysterious luxury treatment, but rather the fundamental technique of South Korea’s medical aesthetics industry—HIFU lifting. But what really matters isn’t the treatment itself, it’s who performs it.

On the 5th floor of that building lies a clinic named simply “Secret” — Secret Dermatology in South Korea (시크릿의원). It doesn’t have a large sign on the first floor nor focuses on becoming a popular Instagram spot, yet it’s been quietly praised by Taiwanese women on PTT and Dcard: “There’s no noticeable sense of having plastic surgery, but my skin just looks better,” they say. “The director never pushes products on patients and even advises them against doing too many procedures.”

In this article, I’ll take you on a tour of this “secret clinic that serves just one patient” from the most authentic perspective—covering everything from location and transportation, price options, the director’s style, and the overall atmosphere, to real reviews from Taiwanese girls on PTT and Dcard. I’ve put it all together for you.

Where exactly is Secret Dermatology in South Korea? It’s accessible via both Gangnam Station and Sinnonhyeon Station, with a Lululemon store right downstairs.

Secret Dermatology is easily accessible, located on the 5th floor of Namyeong Building at 458 Gangnam-daero, in one of Seoul’s most prestigious areas in Gangnam District (Korean address: 서울 강남구 강남대로 458 남영빌딩 5층).

On the lower floors, from 1 to 3, there are Lululemon stores. Right next to them is the Apple Store’s Gangnam flagship store, while across the way there are large coffee shops and beauty stores. You can think of it this way: it’s located in an area equivalent to “Xinyi District’s Micro-Breeze Nanshan” in Gangnam District — so after your treatment, you can go downstairs to shop and enjoy a cup of coffee.

For transportation, there are two subway stations that can be reached:

• Exit 4 at Apgujeong Station on Subway Line 3: about a 10-minute walk
• Sinnonhyeon Station (Line 9 / ANEW Bundang Line): About 7-8 minutes on foot
• Gangnam Station (Line 2): About a 10-minute walk
• You can get off at the “Gangnam-daero Station” and reach the destination in just 5 minutes on foot.

💡 Pro tip: Walking from Apgujeong Station will take you past a whole street of dermatology clinics along Gangnam-daero. If this is your first time in South Korea and you want to check out the area, it’s well worth taking a stroll down this road. If you’d like to explore other dermatology clinics in Gangnam as well, take a look at this article: A Practical Test of TheiA Dermatology’s AI Analysis – also located within walking distance of Gangnam Station.

Secret Dermatology in South Korea – 2026 Price List: Transparent pricing, available in both Korean and Chinese, no hidden fees

What worries patients most in the medical aesthetics industry of South Korea is “opaque pricing” — the quote given on-site often differs greatly from what’s shown online. But Secret handles this issue exceptionally well: they display bilingual price lists in both Korean and Chinese right at the reception, with all services clearly listed at fixed prices, plus regular discount offers for long-term clients.

Below are the price ranges for the top procedures in 2026, compiled from the BeautsGO platform and clinics on site:

⚠️ Important reminder: The prices listed above are for reference only. The actual cost will be based on the clinic’s quote on the day of service. Dr. Zhao will determine the number of injections and the appropriate energy level based on the AI 3D skin analysis results—each patient’s treatment plan is unique. It’s recommended to schedule a consultation first to get the final price confirmed.

Secret Dermatology

BeautsGO 認證

📍 5th Floor, Namyung Building, 458 Gangnam-daero, Gangn
am-gu, Seoul 🚇 10-minute walk from Exit 4 of Apgujeong Station / 7-min
ute walk from Sinnonhyeon Station 🕐 Monday, Wednesday, Friday: 10:30–19:00 / Tuesday, Thursday: 10:30–20:00 / Weekends: 10:30–17:30

✨ HIFU 2nd Generation · Phoenix Radio Waves · Sofwave · ONDA · AI 3D Skin Diagnosis

💰 Project price reference

Recommended Items	Reference price
HIFU 2nd Generation: 300 shots + AI3D analysis	Please check at BeautsGO.
Phenix Wave Thermage FLX 225 Delivery	Starting from ₩990,000
Basic skin care (cleansing + moisturizing)	Starting from ₩50,000

📅 立即在 BeautsGO 預約檔期，查看完整項目報價

If you want to know the price differences compared to other clinics in Gangnam, you can check out this in-depth review of PASCAL Dermatology’s Thermage FLX treatment, which also provides a comprehensive price breakdown for the Thermage procedure.

The 5 Top Advantages of Secret: Features Most Frequently Mentioned by Taiwanese Women on PTT and Dcard

1. “The director handles everything from start to finish himself, never delegating it to nurses or inexperienced doctors.” Dr. Cho Yu-sang insists on conducting personal consultations and performing all procedures himself—a practice that is extremely rare at large cosmetic clinics in South Korea. While many clinics have the director doing consultations while other doctors carry out the treatments, Secret features full-service care handled entirely by Dr. Cho. To learn more about the importance of “director-led treatment” in South Korean cosmetic medicine, check out our in-depth review of HIFU treatments at Aisen Show Essential Dermatology.
2. “No sales pitch—instead, he advises you not to do too much.” Dr. Zhao’s approach to treatment is to recommend procedures only when they’re necessary, and to outright say no if they’re not appropriate. Many netizens have shared that during consultations when they mentioned wanting to try a certain treatment, the doctor would assess the situation and suggest starting with basic skincare first, waiting until the skin condition stabilizes before moving on to more advanced treatments.
3. “No one noticed I had cosmetic surgery after the procedure, but everyone said I looked better” — this is the most common feedback from Taiwanese women. Dr. Zhao’s anti-aging philosophy isn’t about “changing your appearance,” but rather “helping you look like yourself, only younger and more refined,” aiming for a “natural beauty that feels completely unaltered.”
4. “AI 3D skin analysis isn’t just a quick snap shot — you’ll actually get a PDF report.” The clinic uses Singapore’s Eyelab Insight 360° skin analyzer along with Markview skin diagnosis equipment to capture detailed data on everything from inflammation and fat distribution to ligament strength and collagen density. It even generates aging simulation visuals, allowing you to clearly see the difference between having treatment and not.
5. “The pricing is more transparent compared to other clinics in Gangnam — there’s a bilingual price list in both Korean and Chinese right at the front desk.” — No need to worry about communication challenges or hidden price hikes; all prices are clearly displayed, and there are regular discounts available. Hidden fees simply don’t exist at Secret.

Dr. Zhao Yuxiang’s Philosophy in Treatment: Why “Deep Structural Anti-Aging” Is More Important Than “Surface Lifting”?

In South Korea’s medical aesthetics industry, the name Cho Yu-sang carries significant weight in the field of anti-aging treatments. Graduated from the Faculty of Medicine at Chonbuk National University, he boasts over 16 years of clinical experience in anti-aging procedures. He is also an MTL (Medical Thought Leader) certified physician for Thermage and serves as a clinical advisory physician for Ulthrea, the American version of HIFU.

But these titles aren’t what I really want to focus on. What truly sets Secret apart is Director Zhao’s approach to patient treatment.

The typical consultation process at regular cosmetic clinics is usually this: you tell them what you want to do → the doctor takes a look → they give you a quote → and then the procedure starts. But Director Zhao’s consultation is completely different:

• Step 1: AI 3D full-face scanning — rather than just taking a casual visual check, specialized equipment is used to digitize every detail of your face, from the surface layer down to its deeper structures.
• Step 2: Analyze “structural aging” — What he’s looking at isn’t just the surface wrinkles, but deeper issues: Is the ligament support sufficient? Has there been fat loss or displacement? Where does collagen density start to decline?
• Step 3: Develop a “layered treatment plan” — it’s not about relying on a single treatment regimen. Instead, treatments are tailored based on different depths: the right tools and energy levels are used for the epidermis, dermis, and SMAS fascia layer, with each layer requiring its own specific approach.

Dr. Zhao once said something I fully agree with: “The key to anti-aging lies in addressing underlying structural issues, rather than just fixing the surface skin.” This also explains why those who complete the treatments at Secret don’t just experience a “tighter face” — instead, their overall energy and vitality seem completely transformed.

HIFU vs Thermage vs Sofwave: In-Depth Comparison of These Three Top Anti-Aging Devices

Secret’s core anti-aging platform consists of three key devices: Ultherapy Prime (the second generation of HIFU), Thermage FLX (Phoenix Radiofrequency), and Sofwave. Many people find it hard to distinguish between these three devices, so I’ve prepared a comparison table for you.

Director Zhao’s approach is straightforward: it’s not about the more expensive option being the best, but rather determining which level of aging you’re dealing with. Using HIFU on younger skin might be too aggressive, while Sofwave might not be effective enough for older skin. This is exactly why AI 3D analysis is so crucial—it can accurately tell you at what depth your collagen loss begins.

Secret is equipped with six FDA/KFDA-approved flagship devices:

Real-time change timeline: 7 days after treatment → 1 month later

What is “non-invasive anti-aging”? An analysis of Director Zhao’s aesthetic philosophy

What South Korea’s cosmetic surgery industry fears the most is the “surgery face” — that look where it’s obvious something has been done, with unnatural facial proportions and stiff expressions. Yet Director Cho’s aesthetic approach is exactly the opposite: he aims for results where you can’t tell what was altered, yet the face still looks better than before.

At the core of this aesthetic logic lies a deep understanding of “facial structural aging”:

• It’s not about tightening the face, but rather bringing the lost collagen back to its original position.
• It’s not about filling in wrinkles, but restoring the skin’s elasticity and firmness.
• It’s not about changing facial features, but about letting them appear naturally within a more defined contour.

This also explains why many of Secret’s clients are repeat customers who “are already getting cosmetic treatments but feel the results aren’t natural enough” — they found the outcomes too artificial after trying other services, and only after having their treatments adjusted at Secret did they finally become satisfied.

South Korea’s Secret Dermatology vs. Other Anti-Aging Clinics in Gangnam: What’s the Difference?

Simply put: if what matters to you is the “quantity” — doing as many procedures as possible at once and getting results as quickly as possible — large chain clinics might be better suited for you. But if quality is what you prioritize — having a professional who truly takes the time to understand your face and uses the right methods to achieve the best results — then Secret’s approach is likely what you’re looking for.

✅ Who is suitable for a visit to Secret? And who should avoid it?

💡 Quick tip: The suggestions above are for reference only. To determine whether they’re suitable for you, it’s recommended to consult via LINE first, or book a free consultation directly on BeautsGO.

Complete Overview of the Pros and Cons of PTT / Dcard

What’s like the environment at Secret?

Stepping into Secret on the 5th floor of Nanying Building, your first impression is that it doesn’t resemble a clinic at all—but rather a high-end skincare studio. The interior design follows a minimalist and warm aesthetic, free from the cold feel typical of traditional medical facilities. With wooden tones paired with soft lighting, it instantly puts guests at ease as soon as they walk in.

Although the clinic isn’t one of those huge facilities that occupy an entire floor, it’s precisely because of this that everyone gets their own dedicated space—a private consultation room, a separate treatment room, and an individual post-procedure recovery room, offering a truly private experience of “service tailored just for you.”

Of particular note is the Markview skin diagnosis area — the clinic’s core “command center.” Here, Director Zhao uses high-precision instruments to scan your entire face and generate a detailed skin report, after which he sits down with you one-on-one to discuss treatment options. The whole process is unhurried, with the director patiently explaining what each piece of data means.

What should you prepare before your first visit to Secret? Pre- and post-surgery tips

Preoperative Preparation

• Prepare natural-light photos: front view, side views, and 45-degree angles — avoid using beauty filters so that the clinic director can make an accurate assessment.
• Medical history inquiry: Whether taking aspirin, history of angioedema, and allergy to anesthetics
• Be specific about your goals: Clearly state “I want to improve my Nasolabial Fold Correction” or “I want my jawline to be more defined,” rather than just saying “I want to look better.”
• Avoid using acidic skincare products and exfoliants 3 days before the procedure
• Avoid heavy drinking and staying up late one week before the procedure to maintain healthy skin condition

Post-surgery precautions

• After HIFU/THERMAGE treatment: Avoid taking hot baths or using saunas within a week, and refrain from applying heavy pressure to the face.
• After laser treatment: Keep the skin lightly moisturized for three days, avoid excessive sun exposure, and make sure to use adequate sunscreen.
• Common to all treatment sessions: avoid alcohol for one week, steer clear of spicy and stimulating foods, and drink plenty of water to support metabolism.
• Dr. Zhao will include a box of medical-grade face masks, with one mask to be applied daily for the first three days after the procedure.
• If you experience any discomfort, feel free to contact the clinic via LINE at any time. Secret provides excellent post-op follow-up care.

Top 7 Questions About Secret Dermatology in South Korea

Q1: Is Secret a legitimate clinic? Does it have certification from the South Korean government? Yes, Secret
(시크릿의원) is a fully certified medical institution approved by South Korea’s Ministry of Health, located in Gangnam, Seoul. Director Cho Yu-sang is an official member of the Korean Association for Aesthetic Plastic Laser Surgery, the Korean Association for Aesthetic Surgery, and the Korean Anti-Aging Association. All of its equipment has passed FDA approval in the United States.

Q2: Can I go there if I don’t speak Korean? Is there Chinese service availabl
e? Don’t worry at all! There is Chinese-speaking support on site as well. You can also make reservations directly in Chinese through the BeautsGO platform, ensuring seamless communication throughout the process.

Q3: Does Director Zhao actually perform the procedures in person? Or does he only conduct consultations and delega
te the actual treatment to others? This is precisely what sets Secret apart from other clinics — Director Zhao insists on handling both consultations and procedures himself, never entrusting them to other doctors or nurses. That’s also why it’s difficult to book an appointment with him, as there are only a limited number of patients he can treat personally each day.

Q4: Can HIFU and Thermage be done together? Theoretically, it’s possibl
e, but Dr. Zhao generally doesn’t recommend using two high-energy devices on the same day. He will base his recommendation on your AI analysis results, suggesting that you start with one of them first, and then reassess after an interval of 1–3 months to determine if the other one is needed. This is the core principle behind “layered anti-aging” treatment.

Q5: Are there any hidden fees? Is the price quoted on-site different from what’s listed online? Secret offer
s complete price transparency, with bilingual price lists in both Korean and Chinese displayed right at the reception. South Korea’s medical aesthetics regulations require strict disclosure of prices, so legitimate clinics don’t dare to charge extra arbitrarily. Additionally, all prices on the BeautsGO platform are uploaded and verified by the clinics themselves, ensuring reliability.

Q6: Compared to other anti-aging clinics in Gangnam, why choose Secret? The biggest dif
ferences lie in its “one-on-one personalized service” and “deep structural anti-aging approach.” If you’ve been to those high-speed clinics where it’s “10 minutes of consultation → 30 minutes of treatment → next patient,” you’ll experience a completely different pace at Secret—slower, more meticulous, and highly focused.

Q7: How long does it take to see results after the treatment? How long do th
ey last? It varies depending on the procedure: With HIFU, results peak around 2–3 months and last for 1–1.5 years; Thermage provides immediate effects with further improvements over 3–6 months, lasting 1–2 years; Sofwave shows results in about 1–2 months and lasts roughly 1 year. These are all part of the natural process of Collagen regeneration—there’s no instant transformation the day after the treatment.

Summary of Basic Information

How to Make an Appointment at Secret Dermatology in South Korea

Secret offers a variety of booking options. It’s recommended to schedule your appointment at least 1–2 weeks in advance, especially if you’d like Dr. Zhao Yuxiang to perform the procedure personally. During peak seasons—such as cherry blossom season from March to May and maple leaf season from September to November—it’s even more crucial to book well in advance.

When making an appointment, you can choose either “consult first before deciding on the treatment” or “book a specific procedure directly.” Dr. Zhao will use AI analysis during the in-person consultation to provide professional advice, so there’s no need to worry about picking the wrong treatment even if it’s your first time visiting.

5 Biggest Mistakes Newcomers Make at Secret – Lessons Learned from Real People’s Experiences

1. Don’t wait until you’re in Seoul to make an appointment: Dr. Zhao’s schedule is already fully booked, especially on weekends. Many people try to book last minute once they arrive in Seoul and end up having to wait until a week later, wasting precious time from their trip. It’s recommended to secure your appointment through BeautsGO 1–2 weeks before you depart.
2. Don’t pick a treatment without going through the AI analysis first: Some people think, “I just want to get an HIFU treatment,” and skip the AI analysis step. But what Dr. Zhao does best is using data to show you that “you actually don’t need HIFU—Sofwave is a better fit for your current skin condition.” Skipping the analysis means giving up on Secret’s most core value.
3. Don’t expect a dramatic transformation right after the treatment—anti-aging devices work by promoting the production of Collagen, not by using fillers. You might feel only a slight tightening effect immediately after, with real changes becoming apparent over 1–3 months. If you’re looking for results that show a significant difference right away, fillers or thread lifting might be better options, but that’s not what Secret specializes in.
4. Don’t compare it directly with prices from other clinics: Secret’s fee includes treatment performed personally by the director, AI 3D analysis, and post-procedure care package—far more than just the cost of the equipment. While larger chain clinics might seem cheaper if you only look at the price tag, they offer a completely different service model.
5. Don’t forget to bring your passport or foreigner registration card: Reputable medical institutions in South Korea require identity verification, so going without them will mean a wasted trip.

Real experience summary: Is this exclusive clinic that “serves just one person” worth making the special trip?

Having written this much, I return to what my friend said at the beginning: “After returning to Taiwan, my colleagues all said my skin had improved dramatically and asked which skincare brand I was using.”

This is probably Secret’s most core value—it doesn’t aim to turn you into “someone else,” but rather to help you become a better version of yourself. For 16 years, Director Zhao Yuxiang has focused on one thing alone: solving the right problems in the right way, without pushing sales, rushing clients, or using pre-set templates.

If you’re looking for a:

• ✅ The director personally handles everything from start to finish, without delegating to others.
• ✅ Personalized plans backed by scientific data, not standard packages
• ✅ No one will notice you’ve had cosmetic surgery, but everyone will say you look better.
• ✅ Transparent pricing with no hidden fees
• ✅ Located in the heart of Gangnam — right downstairs, you can go shopping and enjoy coffee.

Well, Secret Dermatology in South Korea is very likely the “secret clinic” you’re looking for.

Recommended Reading

📌 Recommended similar anti-aging treatments

• Just 10 minutes walk from Exit 8 of Sinsa Station! First-hand experience from the standalone 3rd-floor clinic PASCAL Dermatology in South Korea: One month after Thermage FLX treatment, my face looks noticeably smaller.
• Hands-on Test of Sutang Aisenxiu Essential Dermatology Korean-style HIFU: My face became more delicate after just one month — friends asked if I had gotten facial bone reduction done

📍 Recommended Gangnam clinics in the same area

• Only after the procedure did I realize all my previous money had been wasted! South Korea’s TheiA Dermatology uses AI to analyze your skin — you can reach it in just 48 seconds from Exit 10 at Gangnam Station.
• Is there a “Diamond Skin Building” hidden on Nonhyeon Road? A comprehensive guide to the 6-floor treatment facilities at Sinsa DICARAT Dermatology