Thermage FLX in Seoul
Yaan Clinic · Gangnam, Seoul
Thermage FLX is a fourth-generation radiofrequency treatment that tightens skin and rebuilds collagen with no downtime. It suits adults with mild to moderate laxity, wrinkles or a softening jawline. At Yaan Clinic in Gangnam, Seoul, doctors with over ten years of Thermage experience treat on two FDA- and MFDS-approved FLX devices, and you can verify device and tip serial numbers.
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At a glance
| Treatment type | Non-invasive monopolar radiofrequency (4th generation) |
|---|---|
| Devices at Yaan | 2 Thermage FLX units |
| Approvals | FDA and Korea MFDS approved |
| Best for | Skin laxity, wrinkles, jawline, double chin, eye-area wrinkles |
| Tips and shots | Total Tip 4.0 cm²: 300–900 shots; Eye Tip 0.25 cm²: 225–450 shots |
| Treatment time | Confirmed at consultation |
| Anesthesia | Confirmed at consultation |
| Downtime | None (non-invasive) |
| Results visible | Builds over 2–6 months |
| Results last | Up to about a year; yearly follow-up typical |
| Stay in Seoul (suggested) | 1 day for consultation and treatment |
| Price at Yaan | From ₩1,690,000 (300 shots) to ₩2,190,000 (600 shots); Eye Thermage 450 shots ₩1,490,000 |
Thermage FLX is a fourth-generation monopolar radiofrequency (RF) device that heats the deep dermis to tighten skin and regenerate collagen without surgery or downtime. At Yaan Clinic in Gangnam, Seoul, Thermage FLX is performed on two FDA- and MFDS-approved devices, and patients can verify the device and tip serial numbers themselves. Yaan's doctors have used Thermage for more than ten years, from the third-generation CPT to today's FLX.
What is Thermage FLX?
Thermage FLX is a radiofrequency skin-tightening device. It delivers uniform heat into the deep dermis, causing existing collagen to contract and stimulating new collagen production, so skin gradually becomes firmer and smoother.
The FLX generation uses AccuREP technology, which automatically calibrates the RF output with each pulse to match your skin. This helps keep energy delivery even across the face. Thermage FLX is approved by the US FDA and by Korea's Ministry of Food and Drug Safety (MFDS, formerly KFDA).
What does Thermage FLX treat?
Thermage FLX treats skin laxity, wrinkles, smile lines, double chin, a softening jawline and wrinkles around the eyes. It improves overall firmness and texture rather than lifting one specific spot.
- Full face: loose or crepey skin, loss of firmness
- Lower face: jawline definition and under-chin laxity
- Eyes: fine wrinkles and hooding, using the dedicated Eye Tip
- Smile lines: softening of folds caused by laxity
For an overview of causes and options, see wrinkles and fine lines and sagging skin and jowls.
Which tips and how many shots are used?
Yaan Clinic uses two Thermage FLX tips: the Total Tip (4.0 cm²) for the full face at 300–900 shots, and the Eye Tip (0.25 cm²) for the delicate eye area at 225–450 shots.
| Tip | Size | Area | Shot range at Yaan |
|---|---|---|---|
| Total Tip | 4.0 cm² | Full face, jawline, under-chin | 300–900 shots |
| Eye Tip | 0.25 cm² | Upper and lower eyelids, crow's feet | 225–450 shots |
The right number of shots depends on your skin thickness, laxity and the areas treated. Your doctor will recommend a shot count after examining your skin.
How long does Thermage FLX last?
Yaan Clinic states Thermage FLX results last up to about a year, and recommends a follow-up treatment once a year. Results develop progressively as collagen remodels.
| Time after treatment | What typically happens (Yaan's timeline) |
|---|---|
| Immediately | Collagen remodeling begins; some tightening may be felt |
| 2 months | Collagen activation |
| 4 months | Improved laxity |
| 6 months | Smoother, tighter skin |
| 12 months | Effects sustained; time to consider maintenance |
Sun protection, good hydration and a healthy lifestyle help prolong results.
Is Thermage FLX painful?
Thermage FLX produces a sensation of heat with each pulse, alternating with cooling. Most people find it tolerable; sensitivity varies by area and person.
FLX technology includes cooling and vibration features designed to improve comfort. Yaan Clinic also offers AirNox inhaled sedation for several procedures; your doctor will discuss comfort options for your treatment at consultation.
Is there any downtime after Thermage FLX?
No. Yaan Clinic describes Thermage FLX as a non-invasive procedure with no downtime. Temporary redness or mild swelling can occur and typically fades within hours to a day or two.
You can usually apply makeup and return to normal activities the same day. Use sunscreen and keep skin well hydrated afterward.
Who is a good candidate for Thermage FLX?
Thermage FLX suits adults with mild to moderate skin laxity, crepey texture or early jawline softening who want firmer skin without injections or downtime. It can also be used preventively.
Tell your doctor about any previous lifting, filler or toxin treatments, as these affect planning. Thermage is generally not recommended during pregnancy or for people with certain implanted electronic devices; your doctor will confirm suitability.
Thermage FLX vs Ultherapy: which is better?
Neither is better for everyone. Thermage FLX tightens and smooths the skin broadly with radiofrequency, while Ultherapy lifts deeper structural layers with focused ultrasound. Yaan Clinic chooses based on the cause of your concern.
| Thermage FLX | Ultherapy Prime | |
|---|---|---|
| Energy | Monopolar radiofrequency | Micro-focused ultrasound |
| Main layer | Deep dermis | Dermis to SMAS |
| Strength | Overall firmness, texture, crepey skin, eyes | Structural lift, jawline, jowls |
| Downtime | None | Usually none |
| Devices at Yaan | 2 | 2 |
| Price at Yaan (300 shots) | ₩1,690,000 | ₩1,500,000 |
Many patients combine the two. Read the full Thermage vs Ultherapy comparison or browse other skin tightening options.
How can I check my Thermage FLX treatment is genuine?
At Yaan Clinic, patients can verify the Thermage FLX device serial number and the tip (cartridge) serial number. A genuine tip ensures you receive the full, correct number of shots.
Yaan's doctors completed the Thermage User Advanced Master Course, and the clinic was featured for Thermage Advanced Master Courses in April 2026. Learn more on genuine products and safety and meet the team on our doctors page.
What happens during Thermage FLX at Yaan Clinic?
- Consultation & Meta-Vu skin analysis – 3D analysis of laxity, wrinkles and texture.
- Serial number check – you can confirm the device and tip serial numbers.
- Preparation – skin is cleansed and a temporary treatment grid is marked.
- Thermage FLX treatment – the doctor applies RF pulses across the planned areas with the Total Tip and, if needed, the Eye Tip.
- Aftercare advice – sun protection, hydration and a plan for yearly follow-up.
Can Thermage FLX be combined with other treatments?
Yes. Thermage FLX is often combined with an ultrasound lift for deeper sagging or with skin boosters for hydration and texture. Your doctor plans the order and spacing of treatments at consultation.
Common pairings at Yaan Clinic include Ultherapy Prime for structural lift, Rejuran Healer for skin repair and fine texture, and Botox for expression lines that RF alone does not soften. Combining treatments can address several layers of aging in a single trip.
How much does Thermage FLX cost at Yaan Clinic in Seoul?
At Yaan Clinic, Thermage FLX costs ₩1,690,000 for 300 shots and ₩2,190,000 for 600 shots. Eye Thermage (450 shots) is ₩1,490,000, and combinations with HIFU or ONDA start at ₩1,790,000.
| Thermage option at Yaan Clinic | Guide price (KRW) |
|---|---|
| Thermage FLX 300 shots | 1,690,000 |
| Thermage FLX 600 shots | 2,190,000 |
| Eye Thermage 450 shots | 1,490,000 |
| Thermage FLX 300 + HIFU 500 shots or ONDA 30,000 J | 1,790,000 |
| Thermage FLX 600 + HIFU 1,000 shots or ONDA 30,000 J | 2,500,000 |
| Body Thermage 500 shots | 6,900,000 |
International patients pay the same price as Korean patients, and your final price is confirmed at consultation. The consultation fee (10,000 KRW, or 30,000 KRW including a director consultation) is waived if you have a treatment. The cosmetic VAT refund for foreign patients ended on 1 January 2026.
For a full breakdown, see the Thermage price guide, the Ultherapy price guide and all Yaan Clinic treatment prices.
For international patients: With no downtime, Thermage FLX is easy to fit into even a one-day visit, and you can fly home soon after. Results keep improving for months once you are back home. See the treatment trip planner to combine it with other treatments.
Frequently asked questions
Can I use Thermage FLX preventively in my 20s or 30s?
Yes. Yaan Clinic notes Thermage FLX can be used preventively to maintain firmness before significant laxity develops. Your doctor will assess whether your skin would benefit and how often treatment makes sense.
How often should I repeat Thermage FLX?
Yaan Clinic recommends a follow-up once a year, since results typically last up to about a year. Collagen continues to build for several months after each session, peaking around six months.
Can I have Thermage FLX if I have had filler or Botox?
Usually yes, but tell your doctor about all previous lifting, filler and toxin treatments, including when they were done. This information helps the doctor plan energy levels, areas and timing safely.
Should I choose Thermage FLX or another lifting device?
It depends on the cause of your concern. Thermage FLX is strong for overall tightening and texture, while ultrasound devices like Ultherapy Prime target deeper sagging. Yaan Clinic recommends a device or combination after examining your skin.
How do I know my Thermage tip is genuine?
At Yaan Clinic you can check the serial numbers of both the Thermage FLX device and the tip (cartridge). This confirms you are treated with a genuine device and receive the full shot count you paid for.
How can I make Thermage FLX results last longer?
Protect your skin from the sun, keep it well hydrated and maintain a healthy lifestyle. These habits slow collagen breakdown. Combining Thermage with skin boosters may also support skin quality; ask your doctor.
How much does Thermage FLX cost at Yaan Clinic?
At Yaan Clinic, Thermage FLX costs ₩1,690,000 for 300 shots and ₩2,190,000 for 600 shots. Eye Thermage (450 shots) is ₩1,490,000. International patients pay the same price as Korean patients, and the final price is confirmed at consultation.
Related pages
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About this information: Prepared from Yaan Clinic's published treatment information. Treatments at Yaan Clinic are performed by licensed physicians — meet our doctors. Last updated: October 2026. This page is general information, not a substitute for an in-person medical consultation; suitability, dosage and results are confirmed by your doctor.
