This is my full and honest account of getting the Phoenix Radio Wave (Thermage FLX) treatment at the Dermatology department of Dongdaemun Doctors in Seoul. Before going, I had read many negative reviews and was worried about running into issues like ineffective treatment or being treated like just another client in a high-volume clinic. But a month after the procedure, my facial contours really tightened up, and my jawline became much more defined. Below, I’ll break down the costs, level of discomfort, who it’s suitable for, and how to avoid common pitfalls, so you can decide whether this clinic is right for you.
Is visiting the Dermatology department at Dongdaemun Doctors Phoenix Radio really a bad idea?
What is the Phoenix Radio at Dongdaemun Doctors’ Dermatology? Why did I preconceive fears of making a bad choice?
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Phoenix Radio refers to what’s commonly known in Taiwan as Thermage FLX. It uses monopolar radio frequency to heat the dermal layer to around 65°C, stimulating Collagen contraction and regeneration to achieve overall facial tightening. My concern stems from the fact that most negative reviews online about treatments from South Korea focus on two issues: the repeated use of probes and rushed, formulaic procedures. I’m worried that I might end up spending money only to have a quick, superficial treatment.
I choose Dongdaemun Doctors because it offers services with a Chinese-speaking supervisor throughout the process, clearly lists prices for foreigners without any hidden charges (which has been confirmed in our price list review), and is located right next to Cheongnyangni Station, making it very convenient for Taiwanese girls traveling on their own. It’s far more important to first figure out whether this place is really the nightmare I imagined or not, rather than just following trends blindly.
Real-Time Experience Record of Phoenix Radio Wave Therapy at Dongdaemun Doctors’ Dermatology Clinic
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Before the procedure started, the nurse applied a numbing agent to my skin for about 30 minutes—a perfect opportunity for me to discuss with the doctor exactly what kind of result I wanted. I made it clear that I wanted visible results without any hollow appearance. During the treatment, I felt a distinct stinging sensation in the bony areas such as my Forehead and cheekbones, as if being bounced on by rubber bands repeatedly. However, the nurse adjusted the intensity based on my reactions throughout. My temples and cheeks felt more like they were warmed up instead. Overall, the pain level was around 6 out of 10, which was more manageable than I had expected.
A full-face treatment with 600 shots takes about 50 minutes. It’s not done by the machine scanning the entire area at once—the doctor focuses extra attention on areas prone to sagging, such as the facial contours and corners of the mouth. The only discomfort I experienced was sensitivity in the nerves around my mouth, causing a brief tingling sensation, but the nurse immediately adjusted the settings, which relieved it. Right after the treatment, my face turned red and tight, similar to what happens after sunburn, with the redness fading after an hour.
Dongdaemun Doctors Dermatology: Timeline of Post-Phoenix Radio Wave Treatment Results
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During days 1 to 3 after the procedure, there is mild redness and tightness, giving the skin a feeling similar to that of sunburn. From days 5 to 7, you start to feel as though your cheeks are being lifted. By the end of the first week, the facial contours gradually become more defined, with the Apple Zone appearing more pronounced when smiling. By the first month, the lower jawline and the flesh around the mouth are noticeably lifted. Friends say my face looks smaller, but in reality it’s just tighter.
The results aren’t permanent—most people see them last around 12 months before collagen is gradually metabolized. I plan to get additional injections every six months to a year, depending on how things progress, or combine them with ultrasound treatments for enhanced results. Note: The first month after the procedure is the collagen proliferation phase, and proper care during this time is even more crucial than at the time of injection, which will be explained in detail below.
Dongdaemun Doctors Dermatology Phoenix Radio – Who Is It For and How Much Does It Cost?
Reference prices for Dermatology treatments at Dongdaemun Doctors Phoenix Radio in South Korea
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In South Korea, the market price for FLX full-face treatment with 600 shots at Phoenix Radio Waves is around ₩3 million to ₩4 million (approximately NT$67,000 to NT$90,000, based on an exchange rate of ₩10,000 ≈ NT$225). For the actual quote from Dongdaemun Doctors, please check BeautsGO, as prices and the number of shots offered can vary depending on promotions and availability. The price of Rejuran treatments at the same clinic starts at ₩30,000, and this figure is already publicly available, making it useful for comparison.
Compared to Taiwan: The cost of Thermage FLX full-face treatment in Taiwan typically starts at NT$70,000 to NT$100,000. In South Korea, while exchange rates and flight costs may affect the final price, you still need to factor in the time spent traveling as well. For those living near Taipei who have difficulty taking time off work, getting the treatment in Taiwan is more convenient. For Taiwanese women who are already planning to visit Seoul, having a facial treatment done there at the same time is a cost-effective option.
Who Is Suitable and Who Is Not for the Phoenix Radio Treatment at Dongdaemun Doctors’ Dermatology Clinic
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The following comparison table helps you instantly determine which category you fall into.
The above comparison is only a preliminary screening; the final decision must still be based on an in-person evaluation by a qualified specialist.
Key Points for Post-Procedure Skincare after Phoenix Radio Wave Treatment at Dongdaemun Doctors Dermatology
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Post-surgery care directly affects collagen production and its duration of effect. The following 5 points are the most crucial—this is exactly what I did one month after my procedure:
- Boost hydration and sun protection in the first 3 days: Apply sheet masks daily and use a repairing lotion. Always wear a physical sunscreen when going outside to prevent darkening of the skin.
- Avoid steam baths and hot tubs for a week: High temperatures can worsen inflammation and affect collagen alignment, so skip saunas for now.
- Pause acid treatments and exfoliation: Avoid retinol, glycolic acid, and mandelic acid for one month after the procedure to allow the skin’s natural barrier to heal.
- Consume more protein and collagen-rich foods: The post-surgery period is a growth phase, so include more fish and soy products in your diet and avoid staying up late.
- Follow-up after returning home: Send post-surgery photos via WeChat at Hannah972, and ask the Chinese customer service to help monitor the recovery progress.
Before you head to the Dermatology department at Dongdaemun Doctors, here are a few things I’ve checked for you.
Real-World Test: Transportation and Chinese Service at Dongdaemun Doctors’ Dermatology Clinic
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The clinic is located at 203-216, 2nd floor, 186 Wangsan-ro, Dongdaemun-gu, Seoul Special City. You can reach it by walking about 10 meters from Exit 6 of Cheongnyangni Station, then turning right and taking the elevator up to the 2nd floor. It takes around 20 minutes to get there by subway from Myeongdong. Since you’re visiting Seoul for the first time as a Taiwanese girl, this location is actually easier to access compared to Gangnam.
I’m accompanied throughout the process by a Chinese-speaking clinic director, so there’s no issue communicating in Chinese during pre-treatment consultations. We can discuss everything in detail, from the intensity of the treatment to the specific areas to be treated. The clinic is open Monday, Wednesday, and Friday from 10:00 to 20:00, Tuesday and Thursday from 10:00 to 19:00, and Saturday from 10:00 to 16:00. It’s closed on Sundays and national holidays, so make sure to avoid these days when planning your visit.
Dongdaemun Doctors Dermatology: Phoenix Radio Waves vs HIFU – Which Should You Choose?
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Many people can’t tell the difference between radio waves and sound waves. Phoenix Radio Waves (Thermage) uses “full-volume heating” to tighten sagging skin across the entire face. Sound waves (HIFU/SeaUff) employ “focused point heating” to address sagging contours and the appearance of a Double Chin. One doesn’t replace the other—it complements each other instead.
My recommendation: For those aged 25–35 whose entire face is starting to lose firmness, radiofrequency treatment is a good first choice. For those over 35 with noticeable sagging contours and a Double Chin, combining radiofrequency with ultrasound therapy yields better results. If budget is a concern, opt for one treatment first and schedule the other for next year. Dongdaemun Doctors offers both types of treatments, and you can have a specialist assess on-site to determine which one should be done first.
Reviews of Dermatology at Dongdaemun Doctors: 3 Misconceptions I’ve Already Exposed for You
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My Mistakes: 3 Common Misconceptions About Reviews of Dermatology at Dongdaemun Doctors
⚠️ Trap 1: Thinking that all South Korea’s radio stations reuse the same probes
The negative online reviews made me think the probes would be reused. In reality, the Dongdaemun Doctors unpack the brand-new probes right in front of you, so you can see both the seal and the batch number.
→ How to avoid it: When making the appointment, explicitly request to verify that the probe is in brand-new packaging in person.
⚠️ Trap 2: Thinking Dongdaemun means getting random injections in a rush
I was initially worried that it would be a quick, robotic process. In reality, a specialist doctor personally assesses the energy levels and enhances the contours, rather than using a machine to scan everything mechanically.
→ How to avoid it: Confirm at the time of booking that it will be performed by a qualified doctor, and discuss which areas to treat on the spot.
⚠️ Trick 3: Assuming foreigners will be charged a higher price
I’m worried that Taiwanese girls might be charged more. In reality, the price is the same for locals and foreigners, with clear pricing displayed. The price list confirms that no extra fee is charged to foreigners.
→ How to avoid it: Get a quote on BeautsGO first, then compare it on-site. If there’s a difference, ask right away.
References
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- Dongdaemun DOCTORS Dermatology Price List (article ID 1893 on beauty.cceeo.com, 2026): Rejuran starts at ₩30,000, with identical prices for domestic and imported products—no extra charges.
- Review of South Korea DOCTORS Dermatology Branch in Dongdaemun (article ID 372 on beauty.cceeo.com, 2026): In-person experience with specialized doctors and Chinese-speaking service.
- What exactly is the highly discussed Phoenix Radio on Threads? (article ID 2721 on beauty.cceeo.com, 2026): The FLX principle and the current situation in South Korea.
- YesTokr Hospital Directory “Dongdaemun Doctors Dermatology” (ID 414, visited on 2026-09-09): address, operating hours, and information indicating availability in Chinese.
- Current market trends for Thermage FLX in South Korea’s Dermatology sector: A full-face treatment with 600 shots costs around ₩3 million to ₩4 million (based on prices publicly listed by various Dermatology clinics).
Related Recommendations
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- Review of DOCTORS Dermatology Dongdaemun Branch in South Korea | 2% of consultations handled by specialist doctors – A must-read guide for those planning medical beauty treatments in South Korea
- Dongdaemun DOCTORS Dermatology Price List: Rejuran starts at ₩30,000, with no extra charge for foreigners
- What exactly is the famous Phoenix Radio discussed endlessly on Threads? The latest miracle device for skin tightening in South Korea’s Dermatology clinics
- Planning to go to Seoul for medical beauty treatments during summer vacation? Save this first! Here’s shinederma’s special price list for Dermatology in Dongdaemun in August: FLX full-face treatment with 600 shots plus 225 shots for the eyes = 2.99 million won
- Hot Topic on Dcard | Pricing List for ADO Dermatology in Gangnam for August-September – Exceptionally Great Value for Radio Wave Therapy and HIFU Treatments
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