I spent a long time debating whether to go to Seoul for Thermage treatment. After comparing the costs in Taiwan, Hong Kong, and South Korea, I finally booked my flight.

After saving up for several months, it was finally time to book my flight. When I mentioned to a friend that I wanted to go to South Korea for Thermage FLX treatment, her first question was, “How much does it cost more in Taiwan compared to South Korea?” To be honest, I had asked myself this question many times before. Before booking my flight, I carefully compared the costs of Thermage treatments in Taiwan, Hong Kong, and South Korea, and compiled this information in the hope that it might be helpful to anyone who is also struggling with this decision.

What exactly is Thermage FLX? Can it really tighten and firm up the skin after treatment?

Thermage is an RF Lifting technology developed by Solta Medical in the United States. The latest version is Thermage FLX. Its principle involves using monopolar RF waves to vibrate the Collagen in the deeper layers of the skin, resulting in immediate tightening effects. At the same time, it stimulates the production of new Collagen, thereby addressing the issue of skin laxity from within.

The main difference between it and HIFU devices such as Ulthera and Doublo is that Thermage FLX targets a much shallower layer – the skin and the superficial subcutaneous tissue. Therefore, it is ideal for tightening the entire face and improving the texture of the skin. It can also be used on sensitive areas such as the eye area and neck. In contrast, HIFU devices penetrate deeper, reaching the SMAS fascia layer, making them more suitable for those who need more profound lifting effects.

The FLX version is three times faster than the previous generation (the fourth generation). The addition of the “vibration mode” significantly reduces discomfort, which is also the main reason why many people prefer the FLX version over the fourth generation. A full-face treatment usually takes only 45 to 75 minutes, and the recovery time is very short – there may be some slight redness on the same day, but you can return to work normally the next day.

Price comparison of Thermage FLX in South Korea: Latest market trends at Gangnam Dermatology in 2026

In South Korea, Thermage FLX is primarily offered in areas with a high concentration of Dermatology clinics, such as Gangnam, Cheongdam-dong, and Hongdae. The prices vary significantly among different clinics, and foreigners sometimes have the opportunity to negotiate discounted packages. Below is an overview of the current market situation for Thermage FLX at Dermatology clinics in Gangnam as of 2026:

Types of treatments	Seoul, South Korea (₩)	Convert to New Taiwan Dollars (NT$)	Convert to Hong Kong dollars (HK$)
Thermage FLX Full Face Treatment (400 sessions)	₩800,000 – 1,200,000	NT$20,000–30,000	HK$4,600–7,000
Thermage FLX Full Face Treatment (900 sessions)	₩1,400,000 – 2,000,000	NT$35,000–50,000	HK$8,200–11,600
Thermage FLX for the eye area (225 sessions)	₩500,000 – 800,000	NT$12,500–20,000	HK$2,900–4,600
Thermage FLX Full Face + Periocular Package	₩1,800,000 – 2,800,000	NT$45,000–70,000	HK$10,500 – 16,300

※ The prices are based on data from March 2026: ¥91 = NT$0.025, ¥91 = HK$0.0058. Prices may vary at different clinics. Foreigners can enjoy special discounts by booking through BeautsGO.

Taiwan vs Hong Kong vs South Korea: How can we accurately compare the costs of Thermage FLX in these three regions?

Many people say that “things in South Korea must be cheaper,” but exactly how much cheaper they are depends on which version you are comparing with. In fact, the main differences among these three regions lie not only in prices but also in the “number of treatments” and the “version of equipment used.”

region	Full-face FLX treatment (900 sessions)	Periocular FLX (225 sessions)	Remarks
Taiwan	NT$55,000 – 80,000	NT$20,000–30,000	This includes the consultation fee for doctors; typically, 650 treatments are required.
Hong Kong	HK$15,000–25,000	HK$5,000–8,000	Private clinics experience significant fluctuations in demand; it is necessary to confirm the specific number of visits required.
Seoul, South Korea	₩1,400,000 – 2,000,000 (≈NT$35,000 – 50,000)	₩500,000 – 800,000 (≈NT$12,500 – 20,000)	Typically, more than 900 treatments are required, including in-person consultations.

As can be seen from the above table, the full-face Thermage FLX treatment in South Korea is approximately 30–40% cheaper than in Taiwan. Even when including round-trip airfare (around NT$5,000–8,000 for Taipei-Seoul flights), it is still a cost-effective option, especially if you already have plans to travel to Seoul.

Which clinic in Seoul is good for Thermage treatments? Reasons for recommending Gangnam Peche and others.

Choosing a clinic is always the most troublesome part. In the end, I selected several Gangnam Dermatology clinics with good reviews on BeautsGO and that were friendly towards foreigners. The key criteria I considered were whether they used the latest version of the Thermage FLX device, the qualifications of the doctors, whether they provided translation services, and how easy it was for foreigners to make appointments.

Gangnam Peche Dermatology is located in Yeoksam-dong, Gangnam-daero. It is one of the most popular clinics on BeautsGO, specializing in the HIFU + Thermage combined anti-aging treatment. The price for 1,200 sessions of this combined treatment is ⩩3,300,000, making it a very cost-effective option for those who wish to undergo both lifting and tightening treatments at the same time. The clinic provides excellent Chinese-language services, and foreigners who make reservations through BeautsGO can enjoy exclusive discounts.

In addition to Peche, SIA Shiya Dermatology and 4ever Dermatology in Cheongdam-dong are also popular choices for HIFU and HIFU treatments. SIA is equipped with advanced facilities, and its physicians have extensive experience in operating the Thermage FLX device; 4ever enjoys a good reputation in the Cheongdam-dong area and often attracts foreign patients.

What should foreigners pay attention to when undergoing Thermage treatment in Seoul? A guide to making appointments

For those flying to Seoul for medical beauty treatments for the first time, many people have questions such as: How will communication be handled? How will the fees be paid? Who will be responsible in case of any problems after the treatment? The following are some points that I have compiled for foreigners to pay attention to:

• Language issue: When booking through BeautsGO, you can arrange Chinese translation services, so you don’t need to prepare Korean texts yourself. The staff at the clinics are also accustomed to serving foreign patients.
• Payment methods: Most clinics in the Gangnam Dermatology department accept Visa/Mastercard credit cards. It is recommended to bring a sufficient amount of Korean cash just in case.
• Preoperative precautions: Avoid using retinol (vitamin A acid) one week before the Thermage treatment. Come to the appointment on that day without makeup and bring your passport along for identification.
• Postoperative care: It is normal to experience some tightness in the face 1-2 weeks after returning to Taiwan. The key is to keep the skin hydrated and protected from the sun, while avoiding strenuous exercise and saunas.
• Effect time: Immediately after the Thermage FLX treatment, a slight tightening effect can be felt. It is after 2–3 months that collagen production begins to increase significantly, and the optimal results are achieved after 6 months, with the effects lasting for 1–2 years.

If you want to save the time spent on consulting and comparing prices, you can simply search for clinics through the BeautsGO platform. The platform provides genuine reviews and transparent pricing information for each clinic, and you can make appointments with just one click – making it ideal for those visiting Seoul for the first time.

FAQs about Thermage FLX: How many treatments are required to see results? How often can it be repeated?

Q1: Is it effective to use Thermage FLX only once?

The effect is immediate, but the degree of this effect varies depending on an individual’s Collagen status. It is generally recommended to achieve the maximum effect in one treatment, and then repeat the procedure every 1–2 years to maintain the results.

Q2: What is the difference between 400 and 900 treatments with Thermage FLX?

The number of sessions refers to the number of radiofrequency pulses. 900 sessions cover a larger area, including the entire face, neck, and the Nasolabial Fold Correction area; 400 sessions are usually limited to the central part of the face. If budget permits, choosing 900 sessions will provide more comprehensive results.

Q3: At what age is it appropriate to start using Thermage FLX?

It is generally recommended for people over 30 years old who have mild to moderate skin laxity. Those aged 25-30 with rough skin or enlarged Pores can also undergo this treatment, but the main benefits will be in tightening the skin rather than providing a lifting effect.

Q4: Is it safe to undergo Thermage FLX treatment in South Korea? What should I do if any problems occur?

The qualification of Dermatology physicians in South Korea is subject to strict regulation. Practicing Dermatology physicians (피부과 전문의) must pass rigorous specialized examinations. Making appointments through legitimate platforms such as BeautsGO ensures safety, as these platforms provide necessary support and guarantees.

Q5: Can Thermage FLX and HIFU be used simultaneously?

Certainly. Many clinics offer combined treatment packages (such as Peche’s HIFU + Thermage combination therapy). These treatments are usually performed on the same day: HIFU is used for deep fascia lifting, while Thermage targets the superficial collagen layer, resulting in even better outcomes when used together.

Q6: Can I get a tax refund for Thermage treatment in Seoul?

Medical treatments are generally not eligible for tax refunds. While the purchase of skincare products at some clinics may be refundable, medical beauty procedures such as Thermage do not meet the requirements for tax refunds.

Q7: How long after the Thermage FLX treatment can one take a flight back to Taiwan?

You can fly right after the procedure, but make sure to avoid excessive skin dryness during long flights by carrying a moisturizing spray with you. It is not recommended to expose yourself to too much sunlight within 24 hours after the surgery; after returning to Taiwan, just apply regular sunscreen as usual.

Q8: How to choose a Thermage clinic in South Korea? What are the evaluation criteria?

Pay special attention to the following three points: ① Ensure that you are using an authentic Thermage FLX device (not a counterfeit one); you can request to see the device’s certification. ② Verify whether the practitioner holds a specialized degree in Dermatology. ③ Check whether Chinese translation services and post-treatment support are provided. Choosing through legitimate platforms such as BeautsGO provides greater peace of mind.