(A guide to visiting an aesthetic medical clinic for international visitors coming to Korea)
[Document type] Visit guide for international patients / Theia Clinic AI skin analysis, medical staff, main treatments, hours, and how to book
* This content is reference material for a visit, prepared based on public information verified as of July 2026, and does not replace a medical diagnosis or a recommendation of a specific clinic or treatment. AI skin analysis results are supporting material for the medical staff's care and do not guarantee a disease diagnosis or a treatment outcome. The final treatment method, device, product, dose, and energy must be decided after an in-person consultation with the medical staff.
────────────────────────────────────
Introduction
────────────────────────────────────
International patients planning a skin treatment in Korea may find it hard to judge which choice suits them among many devices and treatment names.
Even for the same "lifting," the appropriate choice among ultrasound, radiofrequency, laser, or microwave methods varies with the location of the sagging, skin thickness, and facial fat volume. For pigmentation or pore care too, deciding on a laser based only on visible symptoms can produce results different from what was expected.
Theia Clinic, located near Gangnam Station in Seoul, presents an approach that combines AI-based skin analysis with the medical staff's care to design an individualized treatment plan. In this guide, we will look at Theia Clinic's AI analysis process, its medical staff, the main lifting and skin treatments, the hours, and what an international patient should prepare before visiting.
────────────────────────────────────
Key information about Theia Clinic
────────────────────────────────────
Location Near Gangnam Station, Seocho-gu, Seoul
Type of institution Aesthetic medical clinic
Main feature Combination of AI-based skin analysis (Dermacode / Theia Insight) with the medical staff's care
Space layout Two floors around Gangnam Station, with spaces separated by diagnosis·consultation·treatment stages (Theia Room·Insight Room·Doctor Solution Room)
Medical staff Director Kim Geon-hyeong, Director Lee Seong-ho (family medicine specialist), General Director Park Ji-su
Main lifting devices Ulthera, Thermage FLX, Sofwave, Shurink, InMode, Titanium, Onda, Density
Pores·scars Potenza, Fraxel, BBL
Injection treatments Dermashine, Rejumate, filler, botox
Skin care LDM, Cryo, Sonocare, Aquapeel
Transport Line 2·Sinbundang Line Gangnam Station (toward Line 2 Exit 10, Sinbundang Line Exit 6)
Hours Monday–Sunday 10:00–21:00, open without a lunch break (public holidays·temporary closures to be confirmed separately)
Languages Multilingual website in Korean·English·Japanese and others (permanent interpretation not guaranteed)
Booking for international patients Support for schedule confirmation and booking requests via Prettykeep
The composition of the medical staff, hours, devices, prices, foreign-language support, and privacy policy may change. Actual availability is reconfirmed during the Prettykeep booking process.
────────────────────────────────────
What kind of place is Theia Clinic?
────────────────────────────────────
Theia Clinic is an aesthetic medical clinic located near Gangnam Station in Seoul.
The official website presents as its main feature moving away from consultations that rely only on impression or the naked eye, and instead adding the medical staff's interpretation to AI-based skin analysis results to design an individualized treatment direction.
Main care areas
- AI-based skin analysis
- Non-surgical lifting
- Skin elasticity and facial contour management
- Pigmentation and skin tone management
- Pore and skin texture management
- Acne and acne scars
- Skin boosters
- Filler and botox
- Hair removal
- Skin soothing and hydration care
Theia Clinic is described as using two floors around Gangnam Station, with spaces separated by diagnosis, consultation, and treatment stages.
────────────────────────────────────
Theia AI skin analysis system
────────────────────────────────────
[Dermacode and Theia Insight]
Theia Clinic presents its own AI analysis program under the name "Dermacode" or "Theia Insight."
The official information explains that an AI-based high-resolution camera photographs the face, analyzes the skin condition such as pores, skin texture, and tone, and then designs an individualized solution based on the data and the medical staff's judgment.
A patent application number is published for the AI software. However, a "patent application" does not mean the same thing as a patent registration or official recognition of medical validity, so it should be understood as distinct. AI analysis is supporting material for care; the final diagnosis of a skin condition and the treatment decision must be made by the medical staff.
[Stage 1 — Theia Room: skin data collection]
In the first stage, a process of collecting facial skin data using a high-resolution camera may take place.
Elements that may be included in the analysis
- Pores
- Skin texture
- Tone
- Skin tone
- Pigment distribution
- Skin surface condition
Whether you should remove makeup before the photography, or remove lenses or accessories, is best confirmed at the booking stage.
[Stage 2 — Insight Room: explanation of analysis results]
This is the stage where, based on the collected skin data, you hear an explanation of your current skin condition and the treatments of interest.
Rather than simply choosing the items the AI proposes, it is better to ask the following.
- What skin problems were identified?
- Do those results match the visual examination?
- Is this a problem that needs treatment now?
- What is the range possible in a single visit?
- Which items can be managed with home care instead of a treatment?
- Which treatments should be avoided before an important event?
[Stage 3 — Doctor Solution Room: medical care and treatment]
In the final stage, the medical staff decides the treatment plan by combining the analysis material, the patient's skin condition, past treatment history, and wishes.
Even if the AI analysis result suggests a specific treatment, the patient does not necessarily have to receive it. Before the final decision, you should have the product, device, intensity, expected recovery period, and side effects explained.
────────────────────────────────────
Privacy points to check before AI skin photography
────────────────────────────────────
Theia Clinic's published privacy policy states that facial images and consultation content, among others, may be used for AI-based skin analysis and the provision of customized services. It also specifies cases where photos are used for AI model development and performance improvement, so an international patient is advised to check the following before photography.
- What photos and personal data are collected?
- Is the photographed material used only for care purposes?
- Is it also used for AI training or service development?
- Is the material provided to external subcontractors?
- What is the retention period for photos and analysis material?
- Can you still receive a general consultation even if you decline consent?
- How do you withdraw consent or request deletion?
- Is separate consent obtained for publishing before-and-after photos?
The website's published policy includes content about third-party provision or outsourced processing for AI analysis and development. On an actual visit, you should read the consent form provided and, for parts that are hard to understand, choose only after having them explained through interpretation.
Consent to care, consent to use of photos for advertising, and consent to use of AI training data may have different purposes, so it is better to check each one separately.
────────────────────────────────────
Theia Clinic medical staff
────────────────────────────────────
Director Kim Geon-hyeong
Director Kim Geon-hyeong is introduced on the official website as the medical staff member who developed Theia Clinic's AI program and as director.
Main published background
- Graduated from Kyung Hee University College of Medicine
- Developed the Theia AI program
- Current director of Theia Clinic
- Former director of Ppeum Clinic Yeppeumjuui in Myeongdong
- Full member of the Korean Academy of Aesthetic Plastic Laser Medicine
- Full member of the Korean Society for Laser Dermatology and Trichology
- Full member of the Korean Lifting Research Society
- Full member of the Korean Filler Society
- Full member of the Korean Society for Obesity
His role in developing the AI analysis system and connecting the analysis data with the medical staff's treatment protocol is officially introduced. Since the public materials alone do not confirm a dermatology specialist qualification, this guide does not use the expression "dermatology specialist."
Director Lee Seong-ho
Director Lee Seong-ho is published as a family medicine specialist.
Main published background
- Graduated from the Catholic University of Korea College of Medicine
- Family medicine specialist, Korea University Hospital
- Current director of Theia Clinic
- Former director of Sangsang Clinic Yeppeumjuui, Myeongdong branch
- Former general director of Ppeum Clinic Yeppeumjuui, Gangnam main branch
- Full member of the Korean Academy of Aesthetic Plastic Laser Medicine
- Full member of the Korean Society for Laser Dermatology and Trichology
- Full member of the Korean Lifting Research Society
- Full member of the Korean Filler Society
- Full member of the Korean Society for Obesity
His experience in the aesthetic medicine field, including filler and lifting, is published.
General Director Park Ji-su
General Director Park Ji-su is published as being in charge of filler and botox, lifting, and skin and hair-removal care.
Main published background
- Graduated from Konyang University College of Medicine
- Current general director of Theia Clinic
- Former director of Sian Clinic in Gangnam
- Former director of Beautyon Clinic
- Former director of Ppeum Clinic Yeppeumjuui in Myeongdong
- Full member of the Korean Academy of Aesthetic Plastic Laser Medicine
- Full member of the Korean Society for Laser Dermatology and Trichology
- Full member of the Korean Lifting Research Society
- Full member of the Korean Filler Society
- Full member of the Korean Society for Obesity
The composition of the medical staff and their treatment days may change, so if you wish to see a specific staff member, you should include the name and possible dates in the Prettykeep booking request.
────────────────────────────────────
Theia Clinic's main lifting devices
────────────────────────────────────
[1. Ulthera]
Ulthera is a non-surgical lifting device that delivers focused ultrasound energy to a target depth beneath the skin.
You may consult for the following concerns.
- A blurred jawline
- Sagging of the lower face or cheeks
- A double chin
- Wanting to manage the facial contour without surgery
- Needing a lifting that considers the support layer beneath the skin
Patients with little facial fat or with cheek hollowing should carefully decide the treatment area and number of shots. A large number of shots is not suitable for every patient.
[2. Thermage FLX]
Thermage FLX is a treatment that uses monopolar radiofrequency energy to manage skin elasticity, skin texture, and fine lines.
Ulthera and Thermage differ in the energy used and the target skin layer. Whether to receive both devices should be decided after checking skin thickness, sagging, fat volume, and prior treatment history.
[3. Sofwave]
Sofwave is a device that delivers ultrasound energy to a specific depth in the dermal layer of the skin, used for the purpose of managing skin elasticity and fine lines.
Both it and Ulthera use ultrasound energy, but there are differences in the depth and manner of application. Which device is more suitable varies with the treatment area and skin condition.
[4. Shurink]
Shurink is a non-surgical lifting device that uses high-intensity focused ultrasound. You can consult for elasticity management of the whole face or a specific area such as the jawline, and it is important to set the number of shots and cartridge depth to match the skin thickness.
[5. InMode]
InMode is a device that uses radiofrequency energy to manage skin elasticity, facial contour, and the fat layer, among others.
InMode has different handpieces and modes, so rather than simply requesting "InMode" when booking, you should check the following.
- The mode used
- The treatment area
- The radiofrequency method
- Whether fat-layer treatment is included
- The possibility of bruising or redness
- The recommended number of sessions
[6. Titanium Lifting]
Titanium is a non-surgical lifting device that uses laser energy of multiple wavelengths. Patients who want to manage the facial contour, skin elasticity, and skin tone together, or who want a relatively short recovery period, may consult for it.
After the treatment, temporary redness and a warm sensation may appear, so hydration and sun protection are important.
[7. Onda]
Onda is a device that uses microwave energy and can be used for contour management that considers fat and skin tightening of the face or body areas.
If unnecessary fat reduction is applied to a patient with little facial fat, cheek hollowing may become prominent, so you should first distinguish whether fat reduction or skin lifting is needed.
[8. Density]
Density is a device that uses radiofrequency energy to manage skin elasticity and skin texture. Since each radiofrequency lifting device may differ in energy delivery method, tips, and cooling system, it is good to be advised about the differences from other radiofrequency treatments.
────────────────────────────────────
Pore·scar·skin texture care
────────────────────────────────────
[Potenza]
Potenza is a device that uses microneedles and radiofrequency energy together.
Depending on the skin condition and the type of tip, you may consult for the following concerns.
- Pores
- Acne scars
- Skin texture
- Skin elasticity
- Sebum
- Red marks
After the treatment, redness, fine scabs, dryness, or swelling may appear. If you are traveling, you should consider your schedule for strong sunlight, swimming, and sauna.
[Fraxel]
Fraxel is a method that forms micro treatment zones in the skin to manage skin texture, pores, scars, and some pigmentation problems.
Fraxel's treatment purpose and recovery period vary with the device type and wavelength. Do not decide on the treatment based on the name "Fraxel" alone; check the exact device, mode, and expected recovery period.
[BBL]
BBL can be used to manage various skin concerns such as skin tone, pigmentation, and redness using light energy.
Melasma, freckles, blemishes, and redness respond differently to treatment, so diagnosis before the treatment is important. If your skin is dark or you have experienced post-laser pigmentation, be sure to tell the medical staff.
────────────────────────────────────
Skin boosters and injection treatments
────────────────────────────────────
[Dermashine]
Dermashine is a device used to inject skin boosters or skin-hydration ingredients into the skin uniformly.
Dermashine is not a product name but an injection device, so you must separately check which product is actually used and how much is injected.
[Rejumate]
Rejumate is described as a device used in the skin-booster injection or skin-care process.
Skin boosters differ in ingredients and treatment purpose depending on the product, so it is good to check the following.
- The exact product name
- The main ingredients
- The dose used
- Whether it is injected by hand or by device
- The anesthesia method
- The expected embossing and bruising
- The possibility of nodules or allergy
[Filler]
Filler is an injection treatment used to fill in hollow areas of the face or adjust facial proportions and contour.
Before a filler treatment, you should check the product name, dose, injection site, expected duration, and whether it can be removed. Though rare, urgent complications related to vascular occlusion, skin damage, or vision can occur, so if severe pain, a change in skin color, or a vision abnormality appears after the treatment, immediate care is needed.
[Botox]
Botox is a treatment used to adjust the movement of the facial expression muscles or the muscle size. It can be used on the forehead, glabella, around the eyes, the jaw muscles, around the mouth, the neck, or body areas, but the result may vary with the product, dose, and injection location.
────────────────────────────────────
Soothing·hydration and basic skin care
────────────────────────────────────
[LDM water-drop care]
LDM is a device that delivers ultrasound of different frequencies to the skin. You can consult for the purpose of skin soothing and hydration, sensitive skin, or care after another treatment.
It is generally described as care with little recovery burden, but it does not replace a medical diagnosis of an inflammatory skin condition or infection.
[Cryo]
A Cryo device can be used for cooling and soothing care. It may be included in a care program to reduce the heat and discomfort of the skin after a laser or injection treatment.
[Sonocare]
Sonocare is a skin-care device using ultrasound, and can be used for purposes such as skin soothing and aiding product absorption.
[Aquapeel]
Aquapeel is a treatment that manages waste, sebum, and dead skin on the skin surface.
You may consult in the following cases.
- Skin with a lot of sebum
- Blackheads
- Rough skin texture
- Needing light skin care before makeup
If dermatitis or inflammatory acne is severe, strong suction and dead-skin care can irritate the skin, so it should be decided after care.
────────────────────────────────────
Information for international patients to prepare before booking
────────────────────────────────────
Theia Clinic operates pages in several languages, including English and Japanese, not only Korean. However, a multilingual website does not guarantee permanent interpretation on a specific date, so you should confirm the actual language support through Prettykeep.
When requesting a booking, please send the following information.
- Nationality and country of residence
- Preferred consultation language
- Length of stay in Korea
- Desired visit date and time
- Desired medical staff member
- The skin or facial area you are most concerned about
- Treatments and devices of interest
- History of past filler·botox·laser·lifting
- Medications you are taking
- Allergies and major illnesses
- Whether you are pregnant or breastfeeding
- The date of an important event
- Your planned departure date
- Questions about consent for AI skin photography
- Whether interpretation is needed
When submitting facial photos or skin analysis data, it is best to consent after checking the purpose of use, retention period, and whether it is provided to third parties. Please send personal information and facial photos only through Prettykeep's official consultation channel.
────────────────────────────────────
Theia Clinic hours
────────────────────────────────────
General hours announced on the official website
- Monday–Sunday 10:00 a.m. – 9:00 p.m.
- Announced as open without a lunch break
- Weekend care operated
Although it is announced as open every day, public holidays, temporary closures, each staff member's schedule, and the registration cut-off time may differ. If you wish to visit in the evening or on a Sunday, please confirm the actual available care time through Prettykeep.
────────────────────────────────────
Location and transport
────────────────────────────────────
Theia Clinic is located near Gangnam Station in Seocho-gu, Seoul.
Lines available at Gangnam Station
- Seoul Subway Line 2
- Sinbundang Line
The official information introduces access from Line 2 Gangnam Station Exit 10 and Sinbundang Line Gangnam Station Exit 6.
What to confirm through Prettykeep once the booking is confirmed
- The exact building name and floor
- The subway exit matching your line
- The walking route from Gangnam Station to the clinic
- Whether parking is available and its cost
- Whether you need to arrive earlier than the booking time
- Whether to bring a passport or ID
The area around Gangnam Station has many pedestrians and heavy traffic, so it is good to arrive about 10–15 minutes before the booking time.
────────────────────────────────────
The convenience of booking through Prettykeep
────────────────────────────────────
If an international patient contacts the clinic directly, the desired device, treatment area, staff member in charge, AI photography consent, and interpretation request may not be conveyed accurately.
Using Prettykeep, you can receive the following booking support.
- Confirming the desired date and available booking time
- Requesting confirmation of a specific staff member's schedule
- Organizing devices of interest and skin concerns
- Confirming whether AI skin analysis will be performed
- Confirming preparations before skin photography
- Confirming whether interpretation and foreign-language service are available
- Conveying past treatment history
- Guidance on the visit location and how to get there
- Conveying a booking change request
- Support for conveying general inquiries after the treatment
Prettykeep supports booking and communication and does not guarantee a specific staff member or time slot, a medical effect, or a treatment outcome.
────────────────────────────────────
Frequently asked questions (FAQ)
────────────────────────────────────
Q1. Where is Theia Clinic?
A. It is near Gangnam Station in Seoul. The exact building and floor, subway exit, and route can be confirmed after the Prettykeep booking is confirmed.
Q2. How is the AI skin analysis conducted?
A. It is described as photographing the skin with a high-resolution camera, analyzing data such as pores, skin texture, and tone, and then adding the medical staff's judgment to design the treatment direction.
Q3. Does the AI decide the treatment directly?
A. No. AI analysis is supporting material that aids the consultation. Whether to actually have a treatment, and the product, device, and intensity, must be decided after the medical staff's care.
Q4. Can I receive only the AI analysis?
A. Whether analysis or consultation alone is possible may vary with the booking policy. Please write in the Prettykeep booking request that you want to start with analysis and consultation rather than deciding on a treatment right away.
Q5. How are the AI photos used?
A. The published privacy policy includes that, beyond care and skin analysis, they may be used for the purpose of AI development or performance improvement. In the actual consent form, you should check the purpose of use, retention period, and whether they are provided to third parties.
Q6. Can I decline consent to using the photos for AI training?
A. You should check the consent items and the range of care possible with the clinic. Photography for care, AI training, and marketing use of photos each have different purposes, so it is best to have them explained separately.
Q7. Can foreigners receive care?
A. A multilingual website is operated, so information for international patients is provided. The actual booking and language support for that date should be confirmed through Prettykeep.
Q8. Is English·Chinese·Japanese interpretation available?
A. The available languages and interpretation staff may vary by date. Please let us know the language you need at the booking stage.
Q9. Which is better, Ulthera or Thermage?
A. The two devices differ in the energy used and the target skin layer. The suitable treatment should be decided after analyzing facial fat volume, skin thickness, and the location of the sagging.
Q10. Can I receive Ulthera and Thermage on the same day?
A. Depending on your condition, a combined treatment may be possible, but it is not necessary for every patient. The medical staff decides after checking prior treatment history and skin condition.
Q11. What is the difference between InMode and Onda?
A. InMode mainly uses radiofrequency energy, while Onda uses microwave energy. The choice may vary with the main concern, such as skin elasticity or fat volume.
Q12. Can I decline the desired treatment after the skin analysis?
A. Yes. The analysis result is reference material, and after hearing the explanation the patient can hold off on a treatment or choose another method.
Q13. Can I have the consultation and the treatment on the same day?
A. It may be possible depending on the device and the staff's schedule. If you want a same-day treatment, please let us know in advance at the Prettykeep booking request stage.
Q14. Can I designate a specific staff member?
A. A request to designate a staff member is possible, but may not be confirmed depending on the work schedule. It is good to send 2–3 possible dates.
Q15. How do I check the treatment price?
A. The price varies with the device, area, number of shots, energy, product, and amount used. The final amount can be confirmed after the medical staff's consultation.
Q16. Can I have a treatment on the last day of my trip?
A. Simple skin care may be possible, but time is needed to observe swelling, bruising, or unexpected reactions. It is better to leave some room in your schedule rather than right before departure.
Q17. Can I have treatments during pregnancy or breastfeeding?
A. During pregnancy or breastfeeding, the use of some lasers, radiofrequency, injections, anesthetics, and prescription drugs may be restricted. You must inform us at the booking stage.
Q18. What should I do if a problem occurs after the treatment?
A. If severe pain, rapid swelling, a change in skin color, difficulty breathing, or a vision abnormality occurs, do not wait for Prettykeep's reply and visit the nearest emergency medical facility immediately.
────────────────────────────────────
Pre-visit checklist
────────────────────────────────────
- Have you prepared a passport or valid ID?
- Have you confirmed the visit date and the staff member in charge?
- Have you confirmed the exact building and floor?
- Have you checked whether you should remove makeup before visiting?
- Have you organized your past filler·botox·lifting history?
- Have you reported the medications you take and your allergies?
- Have you conveyed whether you are pregnant·breastfeeding?
- Have you reported the important event and departure date?
- Have you confirmed whether interpretation is available?
- Have you checked the purpose of use of the AI skin photography?
- Have you checked the retention period of the photos and whether they are provided to third parties?
- Have you adjusted your schedule for alcohol·exercise·sauna after the treatment?
────────────────────────────────────
Example of a Prettykeep booking request
────────────────────────────────────
I would like to visit Theia Clinic.
Desired date October 20 or 21
Available time After 2 p.m.
Preferred language English
Main concerns Jawline, pores, skin elasticity
Treatment of interest Ulthera·Thermage comparison consultation after AI skin analysis
Previous treatment Jaw botox 8 months ago
Desired staff member Director Kim Geon-hyeong
Planned departure date October 25
I would also like to confirm in advance the scope of use of the AI photography material.
Prettykeep organizes the request content and confirms the staff schedule, whether AI analysis is possible, interpretation, and visit preparations.
────────────────────────────────────
Medical information and advertising notice
────────────────────────────────────
This content is reference material for a visit, prepared based on public information verified as of July 2026, and does not replace a medical diagnosis or a recommendation of a specific clinic or treatment.
AI skin analysis results are supporting material for the medical staff's care and do not guarantee a disease diagnosis or a treatment outcome. A "patent application" does not mean the same thing as a patent registration or official certification of a medical effect.
The composition of the medical staff, hours, treatment devices, prices, foreign-language support, and privacy policy may change. The final treatment method, device, product, dose, and energy should be decided after an in-person consultation with the medical staff, and please confirm the latest information through Prettykeep before booking.
Written and organized by Prettykeep editorial team
Basis of information verification July 2026
Content type Visit guide for international patients
────────────────────────────────────
