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XERF is a non-surgical skin-tightening device. It uses two radiofrequency waves to heat skin and build new collagen.
You may have first heard about XERF from Kim Kardashian, who got it done during a trip to Korea. That is a normal way to discover it, since the treatment started here. This guide covers how XERF works, who it fits, and what a trip to Seoul for XERF actually involves.
XERF uses two RF frequencies at once: 6.78MHz and 2MHz. Together, they reach from the surface skin down to the fat layer beneath it.
This dual-frequency design lets doctors control energy very precisely. Precise depth control also limits unnecessary heat damage to nearby tissue.
How is this different from older RF devices? Traditional RF devices use a single frequency, usually 6.78MHz. That energy travels in one straight, narrow path down to the fat layer. XERF adds a second frequency, 2MHz, at that fat layer. This second wave spreads sideways, heating a wider area at that deeper layer. The result is broader, more even heating, not just one narrow column.
The result is a triple effect: lifting, better elasticity, and clearer facial contours. Many clinics also adjust settings by treatment area, for a customized lift. Your jawline, cheeks, and neck can each get tailored settings.
Built-in cooling protects the skin's top layer during treatment. This is why most patients feel warmth, not pain. XERF is most often chosen to firm skin and improve elasticity. It also refines facial contours, without surgery or needles.
XERF is built for firmer, tighter-looking skin, fast. It works well on a softening jawline, loose cheeks, or a less defined neck.
Many patients see a visible lift the same day, then watch it deepen over the following weeks. It's a strong pick if you want a real lift without surgery or downtime. If your laxity is more advanced, ask your doctor whether XERF alone fits, or whether pairing it with another treatment gets you further. If a facelift is already planned within a year, mention that during consultation too.
Expect two visible stages. Right after treatment, skin looks tighter and more lifted immediately.
Then the deeper work begins. Over four to six weeks, new collagen builds, and the lift becomes firmer and more natural-looking. Many clinics schedule a second session to build on that result. Results commonly last around a year, and a booster session keeps that lift going even longer.
This is one of XERF's biggest draws: real results with almost no interruption to your day. There's no cutting, no needles, and most people skip real downtime entirely.
A full-face session takes about 30 to 60 minutes. Many clinics apply a mild numbing cream first, even though most patients rate the sensation as warm, not painful. You can walk out and go straight to dinner, a meeting, or sightseeing in Sinsa.
XERF works on several areas of the face and neck. Each area targets a different sign of aging.
Many clinics adjust depth and energy for each area, since skin thickness differs across the face and neck.
| Package | Approx. Price (as of 2026) | Notes |
|---|---|---|
| 600 shots (one session) | About ₩1,400,000–₩1,950,000 | Most common shot count for a full-face session |
Prices vary by shot count, treatment area, and clinic. Lower or higher shot counts (300, 900, 1,200) will price differently.
Sinsa sits inside Seoul's busiest dermatology corridor, alongside Apgujeong Rodeo. Clinics there often run XERF alongside collagen-booster injections in the same visit, since both target similar aging signs. This bundling is common in Sinsa, but far less common outside Korea.
Some Korean clinics describe XERF as less painful than Thermage, with a stronger tightening effect. Results still depend on your skin and clinic, so treat this as a talking point, not a guarantee.
This guide can tell you how XERF works and what it typically costs. It cannot tell you if your skin is a good match, or what a fair quote looks like for your case.
If you want a clearer starting point, The Contour Journal - SSC offers a free price check based on your goals and skin condition. Request one here.
XERF tightens loose or sagging skin and boosts natural collagen. It works without surgery, needles, or downtime.
Yes, XERF is generally considered safe across skin types and tones. A consultation can confirm any concerns for your specific skin.
Most people need two sessions for full results. Your clinic will confirm a plan based on your skin.
A 600-shot session, the most common count, runs about ₩1,400,000–₩1,950,000. Exact pricing depends on your clinic and shot count.
Many Sinsa clinics can combine XERF with treatments like skin boosters, if your skin allows it. Always confirm this during consultation first.
XERF has become one of Korea's most requested RF treatments, especially in Sinsa clinics. It offers no-downtime tightening for people with early to moderate skin laxity. The Contour Journal - SSC helps you match your skin goal to a realistic treatment plan. Send your goal, skin concern, and travel dates — you'll get a realistic price range and treatment fit within 48 hours, free, no obligation.
