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Lifting
XERF in Korea: Dual-Frequency RF, Shots and XERF vs Thermage (2026)
By Dr. IM JUNHYUNG · Updated
- 6.78 MHz and 2 MHz together in each shot; depth set as shallow, middle or deep.
- We offer 300 or 600 shots; the number is written on your record before treatment.
- Discomfort rated 2 out of 5; numbing cream is usually not needed.
- Results usually last around six months; repeat every six to twelve months.
- Session
- 30–60 min
- Discomfort
- 2 / 5 — numbing usually not needed
- Downtime
- Same day
- Lasts
- Around 6 months — varies
How XERF works
Monopolar radiofrequency passes energy through the skin, where resistance turns it into heat. XERF delivers two frequencies, 6.78 MHz and 2 MHz, together in each shot, and the depth is set in three steps — shallow, middle or deep — to suit the area. A cooling spray protects the surface. Skin can feel slightly firmer straight away; the main change builds over one to three months as new collagen forms.
Shots and planning
We offer XERF in 300 or 600 shots; the count depends on the area and on how much firmness has been lost, and it is written on your record before treatment. A tip holds 600 shots: with a 600-shot plan a new tip is opened in front of you, and with 300 shots the count remaining on the tip is checked with you before and after. Larger tips are used for the cheeks and jawline, smaller ones for the eye area and curves.
XERF suits skin that has lost firmness across the face rather than one deep area of sagging. It can be the main device in a Layer Lift — the X version — with ONDA for the fat layer and a regenerative injection for the skin.
XERF and Thermage
| XERF | Thermage FLX | |
|---|---|---|
| Energy | Monopolar RF, two frequencies per shot | Monopolar RF |
| Feel | Warm; numbing usually not needed | Hot pulses; numbing cream |
| Shots | 300 · 600 | 300 · 600 · 900 |
| Lasts | Around 6 months | 6–12 months |
Both firm the skin rather than lift the SMAS. Thermage has the longer track record and tends to last longer; XERF is gentler to sit through and suits regular maintenance.
Who it suits
Early laxity, crepey texture on the cheeks and jawline, and people who want firming with little discomfort and no time off. It is a good maintenance step between larger lifting treatments. For heavy jowls, a deeper device such as Ultherapy usually comes first.
Combining XERF
XERF combines well with devices that work on other layers. Our programs pair it with Ultherapy, Sofwave or ONDA, planned by layer so each device works at its own depth. For skin quality, a booster such as Skinvive can be added on the same day.
Aftercare
Redness and warmth usually fade within a day. Avoid saunas for about a week and wear sunscreen. Flying the next day is usually fine. We postpone in pregnancy or while breastfeeding, with a pacemaker or other implanted electronic device, with metal implants in the treatment area, and with active skin infection.
FAQ
Does XERF hurt?
Most people describe it as warm. We rate it 2 out of 5, and numbing cream is usually not needed.
How long does XERF last?
Usually around six months; many people repeat it every six to twelve months.
XERF or Thermage?
Both are monopolar radiofrequency and firm the skin. Thermage tends to last longer; XERF is usually more comfortable and suits regular maintenance. We choose by goal and budget.
How many XERF shots do I need?
We offer 300 or 600 shots, set at consultation and written on your record. A tip holds 600 shots; with 300, the count remaining on the tip is checked with you before and after.
Can I go out right after XERF?
Yes. Redness, if any, usually fades within a day.
General information, not medical advice. Your plan is set at an in-person consultation; results vary by individual.
Representative Director of Taut Clinic, Gangnam. Full member of the Korean Aesthetic Surgery & Laser Society (ASLS), the Korean Association for Laser Dermatology and Trichology (KALDAT) and the Korean Society of Filler Medicine.
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