Sis, let me tell you—when I used to get cosmetic treatments in the past, the doctor would just take a quick look at my face, ask me what I wanted, and then start pushing various packages on me. Do you know how that feels? You spend hundreds of thousands of won, only to end up not even understanding what’s actually wrong with your skin, yet still being pressured into getting a bunch of procedures done.
It wasn’t until I came across a post on Dcard where someone shared information about TheiA Dermatology in South Korea (테이아의원). They mentioned that this clinic doesn’t rely on doctors’ visual inspection but instead uses an AI system of its own development to analyze skin conditions—called “Derma:Code,” which has even been patented. At first, I thought, “AI analyzing skin? What’s the difference between that and using an app like Meitu to estimate your skin age?” But after doing some research, I found out that their AI is trained using facial data, and its creator is actually both a doctor and an AI developer. What’s more, the clinic is just 48 meters away from Exit 10 of Gangnam Station—closer than it is to Starbucks for me!
In this article, we’ll take a closer look at TheiA Dermatology – how it uses AI for facial consultations, whether its prices are steep, who it’s suitable for, and whether the treatments actually work. If you’re also wondering whether to go to South Korea for skin care treatments, this article might help you avoid spending money on something that won’t deliver results.
Where exactly is TheiA Dermatology in South Korea? It’s incredibly easy to get there.
Let’s start with the address: 14th and 15th floors, 407 Gangnam-daero, Seocho-gu, Seoul (서울 서초구 강남대로 407, 14층/15층). This building is located right next to Gangnam Station, putting it in an absolutely prime location—Gangnam Station itself is one of the largest subway interchange stations in South Korea, with Lines 2, ANEW Bundang Line, and the Airport Railroad all converging here.
The most important factor is the distance: just exit No. 10 at Gangnam Station and walk 48 meters. That’s right—48 meters, roughly a 30-second walk. You don’t need to cross the road or navigate around; just head straight ahead. For foreigners visiting South Korea for the first time and relying on Google Maps to find their way, this location is incredibly user-friendly.
The area around here is also very lively—underground shopping malls, Starbucks, and various restaurants are all within walking distance. After your treatment, you can take the opportunity to shop and eat without having to make an extra trip. Also located in the Gangnam district is Sia Dermatology. If you’re comparing different clinics, you might want to give it a look as well.
South Korea’s TheiA Dermatology 2026 Price List: Full Quotes for AI Analysis + Thermage/Rejuran Treatments
Price is what most people care about the most. TheiA’s pricing falls within the mid-range category in Gangnam — not the cheapest, but certainly not exorbitantly expensive either. The advantage is that the prices are transparent and can be checked directly on BeautsGO. Let’s take a look at some of the most popular procedures first:
In terms of price, the Juvelook Blue Bottle starts at around 100,000 KRW, making it a relatively affordable option for beginners. On the other hand, eye Thermage treatment costs 1 million KRW and falls into the category of more advanced anti-aging procedures. Compared to the actual prices of Thermage treatments offered by PASCAL Dermatology, TheiA’s pricing in Gangnam is considered moderate—neither particularly cheap nor the most expensive. If you want to compare more options for Thermage treatments, it’s advisable to check several clinics before making a decision.
5 Key Advantages of TheiA Dermatology: PTT and Dcard as Features Most Frequently Mentioned by Taiwanese Women
- “Data, not opinions” — this is the tagline most often associated with TheiA. Its proprietary AI system, Derma:Code (patent application pending: 2025-0143780), analyzes factors such as your Pores, skin texture, and pigmentation levels, relying on data rather than saying “I think you should do this.” Women who prioritize science-backed anti-aging results really love this approach.
- “Just 3 simple steps—no need to hassle with customer service.” TheiA’s process involves TheiA Room (AI analysis) → Insight Room (professional data interpretation) → Solution Room (doctor’s treatment plan), all in one go so you don’t have to jump around between different sections.
- “It only takes 48 seconds to reach Gangnam Station” — the transportation is incredibly convenient. Just head straight out of Exit 10, and visitors from other areas don’t have to worry about getting lost.
- “All four doctors have specialized training in surgery” — these aren’t just random skin care specialists; they are all licensed physicians with surgical expertise. The clinic’s director, Jung Chinkoo, graduated from Seoul National University Hospital and is considered a pioneer in South Korea’s medical aesthetics industry.
- “There are so many treatment options it’s hard to choose!” — From Inmode, Ulthera, Thermage FLX to Rejuran, Juvelook, Sculptra, as well as various fillers and thread lifts, basically whatever cosmetic procedure you’re thinking of getting, you can find it here.
Dr. Jeong Jin-gu’s philosophy in practice: Why “data-driven” approach is more important than “doing everything”?
When it comes to the key figure behind TheiA, one name that must be mentioned is Dr. Jung Chinkoo. A graduate of the Medical School at Seoul National University and a specialist in surgery at Seoul National University Hospital, he is regarded as a “first-generation” pioneer in South Korea’s medical aesthetics industry—meaning he has been working in this field for decades. He previously served as the lead physician at several clinics, including Myeongdong 예쁨주의쁨, 톡스앤필, and 슬로우성형외과, and is widely considered the key figure who transformed South Korea’s medical aesthetics industry from a more intuitive approach to a data-driven one.
President Jeong Jin-gu has a unique approach to patient treatment. He believes the biggest issue in the medical aesthetics industry in the past has been that “everyone received similar solutions,” as if ordering food at a restaurant meant choosing only pre-set menus. That’s why he led his team to develop the Derma:Code AI system, with the goal of enabling each person to get a customized plan based on their individual skin data—rather than everyone undergoing Thermage treatments, it’s about determining what’s right for your skin based on its specific characteristics.
Another key figure is Dr. Kim Gunhyung, who is both a physician and an AI programmer. Derma:Code was developed under his leadership, integrating facial data analysis, collection of medical research papers, and clinical data from TheiA’s medical team. This is precisely why TheiA can confidently claim that its AI isn’t just a toy—it’s backed by real doctors providing data for training.
The entire medical team consists of 4 full-time physicians, each with specialized surgical qualifications: 정진구 from Seoul National University, 정성록 from the Family Medicine Department at Edae Mokdong Hospital, 기윤도아 from the Korean Institute of Nuclear Medicine, and 최태민 from Yonsei University’s Sinchon St. Brans. In Dermatology clinics located in Gangnam District, it’s actually quite rare to find practices staffed by 4 full-time physicians.
Derma:Code AI Analysis – Side-by-Side Comparison: Immediate Results vs. 7 Days Later vs. 1 Month Later
The core selling point of TheiA is precisely this AI system. So let’s take a look at the real experiences at different time points after undergoing Derma:Code analysis and treatment. Below are the timeline experiences shared by users on Dcard and PTT:
| Timing | The most common reactions from netizens | My observations |
|---|---|---|
| Right after it was done | When I saw the report generated by AI analysis showing my Pores data, I was shocked—turns out my Pores are that large. | It was quite a visual shock to see my skin data presented in detail for the first time. The report showed scores for various indicators, which were far more convincing than judging by eye alone. |
| 7 days later | “My skin has stabilized a lot. The area where I had the Juvelook treatment isn’t red anymore, and my friends say my face looks brighter.” | Once the post-surgery recovery period is over, basic moisturization and skin quality improvements begin to show. For treatments like Rejuran, this stage is still one of gradual improvement. |
| 1 month later | “Looking back at Derma:Code’s analysis report and comparing it to my current skin condition, there’s indeed improvement, but it’s not a dramatic transformation.” | One month marks the golden period for seeing results—Collagen begins to reorganize, leading to a noticeable improvement in skin texture. If you’ve undergone a lifting treatment like Thermage, it’s at this time that before-and-after photos can truly show the difference. |
Real Test of Juvelook Glow Treatment: The Actual Results of the ₩100,000 Entry-Level Option
ThieA’s Juvelook Glow Injection (Blue Bottle) starts at just ₩100,000, making it the most affordable injection option on the entire price list. Made with PDLLA (poly-L-lactic acid), Juvelook is designed to stimulate Collagen production and improve skin quality. Compared to Rejuran, Juvelook offers gradual improvement rather than immediate results.
A user on PTT shared, “I didn’t notice much difference in the first two weeks after getting Juvelook, but starting from the third week, I realized my Pores seemed smaller and my skin felt smoother. It’s not an earth-shattering change, but my face looks cleaner when I’m not wearing makeup.” This description is actually quite accurate—Juvelook works gradually, so you won’t see immediate changes in volume like with fillers.
One of the advantages of getting Juvelook treatment at TheiA is that doctors first use Derma:Code to analyze your skin condition, determining the extent of your Collagen loss and the optimal injection depth—rather than simply administering injections without proper assessment. If you’d like to explore more options related to Rejuran treatments, you can check Newlline Dermatology’s Rejuran price list for comparison.
“You can’t tell exactly what was changed, but it just looks better” — TheiA’s aesthetic philosophy
TheiA’s aesthetic approach has a very clear core principle: “data-driven natural improvement.” What does that mean? It avoids creating those results that immediately reveal cosmetic treatment has been done. Instead, it uses AI to identify the specific areas of your skin that need improvement, then addresses those issues precisely.
For example, if your Derma:Code analysis shows a high pigment deposition index but normal Pores levels, your doctor will recommend BBL or pigment laser treatments rather than procedures aimed at tightening Pores. This is the underlying logic behind “it’s hard to tell exactly what was done, but the skin just looks better” — because each treatment is tailored to address your specific weaknesses, resulting in an overall improvement in skin condition without any one area appearing drastically changed all at once.
In a recent interview, Director Jeong Jin-gu said, “In the past, medical aesthetics relied on intuition and experience, but true premium quality should be based on data.” This philosophy guides every aspect of TheiA’s treatment design—from AI analysis to its three-step process—each step centered around the principle of “letting data speak.”
Comparison table with other Dermatology clinics in Gangnam: Is TheiA really worth visiting?
| Comparison Items | TheiA Dermatology | Sia by SWOMAN / DICARAT |
|---|---|---|
| Target Audience | The rational type who focuses on data analysis and seeks scientific solutions | Consumers who prioritize a pleasant environmental experience and a variety of treatment options |
| In-person consultation style | Three-step process: AI system analyzes first → expert interprets the results → doctor creates a personalized plan | The doctor conducts a face-to-face consultation, which is fast but relies more on subjective judgment. |
| Operator | 4 full-time physicians, all with specialized surgical qualifications | Depends on the branch and time of day |
| Chinese Services | Provide Chinese/English translations – friendly to foreigners | Shiya offers Chinese-language services, while DICARAT provides them during certain hours. |
| Review Keywords | Data-driven, transparent, AI-powered consultation, natural results | Premium environment, a wide range of treatments, fast and convenient |
Simply put: if you’re the type who prefers to rely on numbers when making decisions, TheiA’s AI analysis tool will give you peace of mind. But if you place more emphasis on the overall atmosphere and the immediate experience, Sia or DICARAT might be better suited for you. There’s no absolute “best” option—it depends on what matters most to you.
✅ Who is a good candidate for TheiA Dermatology?
| ✅ Perfect for visiting | ❌ Not recommended |
|---|---|
| Trying AI analysis for a face consultation for the first time—wanting to understand my skin’s actual condition | Severe fear of injectable treatments |
| I hope to take the opportunity to get treated near Gangnam Station and save time on commuting. | Recent skin wounds, sunburn, or severe rashes |
| Prefers data-driven approaches and dislikes doctors recommending treatments based on intuition alone | During pregnancy or breastfeeding |
| Striving for a natural improvement, avoiding the look of someone who has just had cosmetic surgery | Have an important event coming up in the short term and need immediate results |
💡 Quick tip: The suggestions above are for reference only. To determine whether they’re suitable for you, please consult via LINE first.
Comprehensive Review of PTT/Dcard: Honest Feedback from TheiA Dermatology
| Evaluation Dimensions | Advantages (frequently mentioned in positive PTT/Dcard reviews) | Disadvantages (common complaints on PTT/Dcard) |
|---|---|---|
| Doctors’ expertise | All four full-time physicians specialize in surgery, with the hospital director being a graduate of Seoul National University. | Sometimes the wait for a doctor’s in-person consultation can be quite long, so it’s important to schedule enough time. |
| Treatment Results | AI-driven analysis ensures precision, customized treatment plans deliver targeted results, and the outcomes look natural. | The results are gradual rather than immediate, so patience is required. |
| Service Experience | The 3-step process is clear, the translation service is top-notch, and the staff are friendly to foreigners. | It’s crowded during peak hours, and Insight Room’s analyses can sometimes come across as hasty. |
| Reservation Process | Online booking is convenient, and the Gangnam station offers excellent transportation access. | It tends to get busy on weekends, so it’s recommended to book 1–2 weeks in advance. |
Overall, the negative reviews for TheiA aren’t serious issues—most are about preferences such as “long waiting times” or “delayed results,” rather than actual problems like “poor quality work” or “subpar service.”
What’s like the atmosphere at TheiA Dermatology?
TheiA occupies two floors, 14th and 15th, making it one of the largest Dermatology clinics in Gangnam District. Its overall design blends a technological vibe with a warm, inviting atmosphere—far from being a cold, sterile medical spa or a flashy luxury store. Instead, it features abundant wood tones accented with tech-blue elements, giving the impression that “this is a place where everything is done with precision using data.”
The first space you enter upon arrival is TheiA Room, where AI analysis begins. The space design aims to create an “immersive experience” — with dim lighting that helps you focus while reviewing the Derma:Code analysis reports. There are also some data visualization elements on the walls, reflecting TheiA’s “data-driven” brand philosophy.
The second space is the Insight Room, where dedicated “curators” will help you interpret the data analyzed by AI. It’s brighter than TheiA Room, equipped with sofas where you can sit and discuss things. The overall atmosphere resembles that of a consultation area in a café—rather than making you feel like you’re seeing a doctor, it’s more like having someone guide you through skin care options.
The third space is the Solution Room — this is where you can truly have one-on-one discussions with doctors about your treatment plan. Spanning two floors, TheiA offers plenty of private consultation rooms to ensure complete confidentiality. Each room is equipped with its own air conditioning and lighting, eliminating the awkwardness of being able to hear whatever’s going on in neighboring rooms.
FAQ: Most Common Questions About TheiA Dermatology
Q1: Is there an additional fee for Derma:Code AI analysis? N
o. Derma:Code analysis is part of TheiA’s in-person consultation process and is included in your treatment cost. There are no extra charges for going through the three steps—TheiA Room → Insight Room → Solution Room.
Q2: Is Chinese service available for foreigners at TheiA? Yes. TheiA offers transla
tion services in both Chinese and English, so it’s recommended to specify your need for a Chinese interpreter when making a reservation. The official website also supports a Chinese interface, and the reservation system will be fully upgraded to support Chinese, English, and Korean by 2026.
Q3: What makes TheiA’s Thermage different from other providers? T
he biggest difference is that TheiA first uses Derma:Code to analyze your skin condition, determining your skin elasticity and Collagen levels before setting the appropriate parameters for the Thermage treatment. Not all clinics do this. For more comparisons of Thermage treatments, you can check out DICARAT Dermatology’s Rejuran and treatment price lists.
Q4: How far in advance should I make a reservation
? It’s recommended to book at least 1–2 weeks ahead, especially for weekend slots. TheiA is extremely popular among locals in South Korea as well—there are queues not only of foreign tourists.
Q5: Is rest needed after completing the treatment? It de
pends on the type of treatment. Injection-based treatments (such as Rejuran and Juvelook) usually require no rest, allowing patients to resume normal activities right away; laser treatments may need 2–3 days for the redness to subside; while lifting treatments (like Thermage and Ulthera) recommend avoiding strenuous exercise on the day of treatment.
Q6: Does TheiA accept card payments? Yes. Credit cards,
Alipay, and other payment methods are all accepted. It’s recommended to confirm the specific payment options when making a reservation.
Q7: What treatment is recommended for first-time visitors to TheiA? For newcomers
, it’s suggested to start with Juvelook Hyaluronic Acid Treatment (starting at ₩100,000) or Asce+ Exosomes treatment (starting at ₩350,000). This allows you to experience the AI analysis process first, after which you can plan subsequent treatments based on the results.
Basic Information on TheiA Dermatology
| Project | Details |
|---|---|
| 📍 Clinic Name | TheiA Dermatology (테이아의원) |
| 📌 Address | 14th/15th Floor, 407 Gangnam-daero, Seocho-gu, Seoul |
| 🚇 Transportation | Exit 10 at Gangnam Station, 48 meters (about 30 seconds walk) |
| 🕐 Business Hours | Daily from 10:00 to 21:00 (Monday to Sunday) |
| 🚗 Parking | Parking available |
| 💬 How to Book a Appointment | Consult via LINE / Email via Gmail / One-click booking through BeautsGO |
How to Make an Appointment at TheiA Dermatology in South Korea
TheiA offers three ways to make appointments, and it’s recommended that foreigners use BeautsGO or LINE first.
Reservation Process Explanation: TheiA follows a comprehensive workflow that includes “online reservation → on-site AI analysis → expert interpretation → physician consultation → treatment procedure.” It is recommended to schedule at least 2 hours, as Derma:Code analysis, interpretation, consultation, and treatment all form part of a complete process — services aren’t provided immediately upon arrival. When making a reservation, please indicate your need for Chinese translation services.
5 Common Mistakes to Avoid at TheiA Dermatology (Learned from Real People’s Painful Experiences)
- Never decide on a treatment plan without first undergoing AI analysis: The core value of TheiA lies in its Derma:Code analysis. Some people show up and immediately say, “I want to do Thermage,” but skipping the analysis means their visit is pointless. First conduct the analysis, listen to the doctor’s recommendations, and then decide what treatment to pursue.
- Avoid last-minute visits on weekends: Weekends are TheiA’s busiest times, and it’s almost impossible to book a slot at the last minute. Someone posted on Dcard, “I passed by on Saturday hoping to give it a try, only to be told I’d have to wait for 3 hours.” Be sure to make a reservation 1–2 weeks in advance.
- Don’t overlook the insights provided in Insight Room: Some people find AI analysis reports too complicated and decide to go straight to Solution Room to consult doctors. But by skipping Insight Room, where curators explain the data in plain language, you’re essentially wasting one of Theia’s most valuable features.
- Don’t think you’ll see results right away: TheiA’s treatment approach focuses on “gradual, natural improvement,” rather than immediate effects. Some people feel there’s “no difference” just one week after getting Rejuran and leave negative reviews, but actual changes start to show up after a month.
- Don’t give up after just one session: skin care is a continuous process. TheiA’s AI system will help you plan the number of treatment sessions needed. Only by conducting a full analysis during the first session and then comparing subsequent data can we truly see the value—allowing us to observe how your skin’s conditions change over time.
What should you prepare for your first visit to TheiA? Pre- and post-surgery tips
Preoperative Preparation
- Prepare natural-light photos: front view, side views, and 45-degree angles—avoid using beauty filters, as Derma:Code requires an authentic skin condition.
- Medical history inquiry: Whether taking aspirin, presence of angioedema tendency, and any history of allergies.
- Be specific about your needs: Clearly state “I want to reduce enlarged Pores and uneven skin tone,” rather than just saying “I want to look better.”
- Avoid using acidic skincare products and exfoliants 3 days before the procedure to keep your skin in a stable state.
- Avoid wearing makeup on that day; upon arrival, the clinic will remove your makeup before conducting the AI analysis.
Post-surgery precautions
- After Thermage: Avoid taking hot baths for a week, refrain from applying heavy pressure to the face, and stay away from saunas.
- After Juvelook/Hyaluronic Acid Treatment: Maintain mild hydration for three days, avoid excessive sun exposure, and refrain from using acidic skincare products.
- After Rejuran: A slight granular sensation at the injection site is a normal phenomenon and usually subsides within 1–2 weeks.
- After all treatments: avoid alcohol and intense exercise for one week, and make sure to use strong sun protection (SPF 50 or higher).
- Follow-up on Derma:Code – It’s recommended to return for a second AI analysis after 3 months to compare data changes before and after.
Real verdict: Is TheiA really worth it?
To be honest, TheiA isn’t the kind of clinic that overwhelms you with luxurious interiors as soon as you step in. What makes it special is that after your treatment, you receive an AI-analyzed report showing exactly what each metric of your skin looks like, along with explanations for why the doctor recommended a certain treatment plan. This level of transparency, where everything is backed by data, is truly rare in South Korea’s medical aesthetics industry.
If you’re like me—someone who hates being sold to and prefers to be convinced by facts and numbers—the Derma:Code system at TheiA will give you a great sense of confidence. With just a 48-second commute from the Gangnam branch, four board-certified surgeons on staff, and entry-level prices starting at ₩100,000 for Juvelook treatments, this clinic is indeed a solid choice for those visiting South Korea for medical aesthetics for the first time.
However, if what you’re looking for is “instantly stunning results” or a “luxurious spa experience,” then TheiA might not be the right choice for you. Its approach is one of “gradual improvement, proven by data” — this method may not be as dramatic, but when you look at the before-and-after photos after 3 months, you’ll realize you’ve indeed gotten better-looking, though it’s hard to pinpoint exactly what changed.
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