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Dear Clinic · Procedure Information · Lifting
Next-Generation Radiofrequency

XERF Lifting

Next-generation radiofrequency built for deep, uniform delivery into the dermis — quoted in blocks of 300 or 600 shots, mapped zone by zone before the first pass.

Deep uniform RF energy From ₩1,300,000 / 300 shots ($930) Open 365 days
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About

What is XERF?

XERF is a non-surgical skin-tightening treatment that uses next-generation radiofrequency (RF) to deliver deep, uniform heat into the dermis. The energy contracts existing collagen and stimulates new collagen over the following weeks, firming loose skin, refining texture and reinforcing elasticity. Its design goal is even energy distribution: heat placed consistently across a zone, so no single spot carries the load, for a smooth and controlled tightening effect with little downtime.

Radiofrequency works in the dermis. Focused ultrasound is the technology that reaches the SMAS layer below it, so the reading decides which of the two your face is asking for before any shot count is written down. XERF is then planned in shot units — a single sitting or a short series, depending on how widely your laxity is spread — and the block you approve is the block you are charged for.

Powder room at Dear Clinic with twin basins and a backlit mirror carrying the DEAR mark
Every XERF plan starts with a face-to-face diagnosis at Dear Clinic, Cheongdam.
Treatment Areas

Where XERF earns its shots

The shot map is drawn zone by zone from your EVE Muse reading, with denser passes where the dermis has thinned and fewer where it has held.

01

Broad cheek coverage

The widest surface on the map, and the one uniform delivery was designed for. A cheek treated at a steady setting firms without the patchiness that uneven passes leave behind.

02

The lower-face outline

Softening along the jaw, worked with closer pass spacing so the border between face and neck reads sharper.

03

Surface roughness and pore size

Pores look wider when the dermis under them has thinned. Rebuilding that support is what narrows the opening, so this is a slow, cumulative gain rather than a same-day one.

04

Under the chin and down the neck

Thin, mobile skin. The energy level drops here and the block is usually smaller than a facial one.

Twin recovery room at Dear Clinic with two beds, backlit arch mirrors and oak cabinetry
Twin recovery room at Dear Clinic with two beds, backlit arch mirrors and oak cabinetry
EVE Muse 3D skin analysis unit at Dear Clinic
EVE Muse 3D skin analysis unit at Dear Clinic
Why deep, uniform RF matters

What next-generation RF actually changes

Three things decide whether a radiofrequency pass firms anything: where the heat lands, how deep it goes, and how evenly it is spread across the zone.

01 — UNIFORM ENERGY

Even coverage across a zone

XERF is engineered to spread energy evenly over the area under the handpiece. Overlap and speed still belong to the operator.

02 — DEEP DELIVERY

Down to the collagen layer

The target is the dermis, where collagen sits. Heat at that depth contracts the fibres already there on the day, and sets off the remodelling that keeps building for weeks afterwards.

03 — COMFORT-BUILT

Heat you can hold still through

Comfort here is not a courtesy. A patient who is flinching cannot be treated at a constant setting, and a constant setting is the entire premise of uniform delivery. Controlled heating is what lets a director run the same energy from the cheek through to the jaw and finish the map they planned.

Main reception with stone counter and bouclé armchairs at Dear Clinic Cheongdam
Main reception with stone counter and bouclé armchairs at Dear Clinic Cheongdam
Private curtained treatment bays at Dear Clinic Cheongdam, each numbered and separately lit
Private curtained treatment bays at Dear Clinic Cheongdam, each numbered and separately lit
Dear, Knowhow

XERF among the other lifting platforms

01 — THE FULL ARSENAL

One line on the equipment list

Ultherapy Prime, Thermage FLX, Density, XERF, Onda, New Titanium and Shurink Universe are all installed in this building. A scan that lands on the SMAS layer is quoted focused ultrasound; one that lands in the dermis is quoted radiofrequency.

02 — DIAGNOSIS FIRST

The map that becomes a shot count

Uniform energy still has to land in the right places. EVE Muse 3D imaging and its five light sources record where the dermis has thinned and where firmness has dropped, and that record is what turns into a 300-shot block at ₩1,300,000 (≈ $930) or a 600-shot block at ₩2,000,000 (≈ $1,430) — denser passes over the weak zones, restraint over the ones that are holding.

03 — DIRECTOR-PERFORMED

Overlap, speed and pressure

A device engineered for consistency still depends on pass overlap, speed and pressure holding steady from the cheek to the jaw. Every XERF map here is performed by our directors, who hold that rhythm constant from the first pass to the last, which is how the evenness the hardware is built for reaches your skin.

In the clinic

The devices and hands behind this treatment

Treatment corridor with a mirrored end wall reflecting the DEAR clinic logo
Treatment corridor with a mirrored end wall reflecting the DEAR clinic logo
Pricing

How much does XERF lifting
cost in Seoul?

XERF is quoted by the shot. At Dear Clinic in Cheongdam, ₩1,300,000 (≈ $930) buys 300 shots and ₩2,000,000 (≈ $1,430) buys 600 shots — one published list, read the same way by Seoul residents and by visitors. A jawline-only map and a full face plus neck do not consume the same energy, and one flat visit fee would make somebody subsidise somebody else. How many shots your map calls for comes out of the 3D diagnosis and is shown to you before the handpiece is switched on.
PlanIncludesPrice
300 shotsStandard tightening plan — matched to your diagnosis₩1,300,000 (≈ $930)
600 shotsExtended plan for broader coverage or firmer laxity₩2,000,000 (≈ $1,430)
Every planEVE 3D + AI diagnosis · doctor consultation · aftercare guidanceincluded

Rates current as of September 2026. The shot block you sign off is the shot block you are charged for, and nothing is appended once the pass has started. Thermage FLX, Density, Onda, New Titanium, Shurink Universe and Ultherapy Prime are quoted from the same published list, so a comparison can be priced at the same consultation.

Caution

What the first few days after XERF feel like

Skin normally reads slightly flushed and feels warm as you leave. Because the energy was spread across the zone instead of concentrated in spots, that colour is usually even, and it fades on its own.
Heat placed deep in the dermis can leave an inner tightness, or tenderness when you press the cheek, for a short while. That is the collagen reacting to heat and it eases on its own.
The risks worth naming are small but real: a superficial burn or blister where energy concentrates, swelling or a bruise at the edge of a treated zone, and, on deeper skin tones, a temporary patch of hyperpigmentation. Contact us the same week if a spot stays painful, blisters, or darkens instead of settling.
Keep further heat off the treated area for the first few days — no sauna, jjimjilbang or hot yoga, and no long stretches in strong sun.
Park acids, retinoids and scrubs until the tight feeling eases, and moisturise more generously than usual; deep dermal heating leaves the surface feeling drier than it looks.
Message us if warmth or sensitivity is still there after a couple of days. Aftercare follow-up is included whether your plan was 300 shots or 600.
Curved shelving niche with a round bouclé ottoman at Dear Clinic Cheongdam
Curved shelving niche with a round bouclé ottoman at Dear Clinic Cheongdam
Medical Team

Five doctors, one standard

Director-performed treatment is a Dear promise — your procedure is planned and performed by the doctors below.

Dr. Jemin Kim — Medical Director and Founder, Dear Clinic
Dr. Jemin Kim
Yonsei University College of Medicine
Medical Director · Founder
Dr. Sanghyun Lee — Director, Dear Clinic
Dr. Sanghyun Lee
Seoul National University College of Medicine
Director
Board-certified · Family Medicine
Dr. Seonhaeng Lee — Director of Aesthetic Medicine, Dear Clinic
Dr. Seonhaeng Lee
Chosun University College of Medicine · Residency, Samsung Medical Center
Director, Aesthetic Medicine
Dr. Daeun Jung — Director, Dear Clinic
Dr. Daeun Jung
Ajou University College of Medicine
Director
Board-certified · Family Medicine
Dr. Woojae Jung — Director of Aesthetic Medicine, Dear Clinic
Dr. Woojae Jung
Seoul National University — B.S. in Medicine
Director, Aesthetic Medicine
Patient Reviews

What our patients say

Real verified reviews from our Google Business Profile.

4.9★★★★★ 293 Google Reviews
FAQ

XERF lifting, answered

Is XERF lifting worth it?
At ₩1,300,000 (≈ $930) for 300 shots, XERF earns its price when the looseness is dermal and spread evenly across the face — that is exactly what uniform delivery is built for. It is poor value when the problem is a deep descent at the SMAS layer, which radiofrequency cannot reach. The EVE Muse reading is what separates those two cases.
How much does XERF cost in Seoul?
At Dear Clinic, XERF is ₩1,300,000 (≈ $930) for 300 shots and ₩2,000,000 (≈ $1,430) for 600 shots — one published price list for locals and international visitors. Your shot count is planned from a 3D diagnosis and approved by you before treatment.
How is XERF different from Thermage or Density?
All three heat the dermis with radiofrequency, so their purpose overlaps and the difference is in how each is delivered and quoted. Thermage FLX is a 600-shot tip at ₩2,200,000 (≈ $1,570), usually one substantial visit. Density runs three tip tiers from ₩700,000 (≈ $500) per 300 shots. XERF is quoted in flat 300- and 600-shot blocks with even delivery as its design goal. Dear Clinic carries all three, so the choice is made on your reading and on how you want treatment spaced.
How is XERF different from HIFU lifting like Ultherapy?
They work on different layers. XERF heats broadly across the dermis for tightening and texture; HIFU such as Ultherapy Prime places focused ultrasound at the deeper SMAS layer for lift. Many faces need one only. Some are treated with both in sequence, and because Dear carries both, that sequence is planned from a single diagnosis.
Does XERF hurt?
You feel deep warmth building under the handpiece as each pass runs. Even, controlled heating is what keeps that tolerable at a working energy level, and topical numbing is available if you want it. The sensation belongs to the pass and stops when the pass does.
When do XERF results appear, and how long do they last?
Some firmness registers on the day as existing collagen contracts. The larger share builds over the following weeks while new collagen forms. How long it holds varies with your age, skin and how much collagen the treatment recruited, so any maintenance block is planned from a follow-up reading and not from a fixed calendar interval.
Is there any downtime after XERF?
Nothing that stops your day. Because the energy is spread evenly across the zone, the skin tends to look faintly flushed instead of marked, and that eases within hours. Makeup goes back on the same day and a flight home is fine; it is only extra heat — sauna, hot yoga, strong sun — that is worth postponing briefly.
How many shots will I need?
A jawline-only map can sit inside a 300-shot block at ₩1,300,000 (≈ $930). A full face with the neck added generally calls for the 600-shot block at ₩2,000,000 (≈ $1,430). Your director sizes the block from the 3D reading and shows you the total before the handpiece is switched on.
Who should not have XERF?
Monopolar radiofrequency is not performed over an implanted pacemaker or defibrillator, and we do not treat during pregnancy. Skin that is currently inflamed, broken, infected or sunburnt is rescheduled until it has settled, because heating a compromised barrier raises the risk of a burn or of pigment change afterwards. Tell your director at consultation if you have a history of keloid scarring or of hyperpigmentation after heat.
Can XERF be combined with other treatments?
Yes, when the reading supports it. Radiofrequency for dermal tightening is often sequenced with a HIFU lift for deeper laxity, or with a skin booster for hydration and texture. Any combination is planned and approved by your director in advance; nothing is added on the day.
Do men get XERF too?
Yes. Jawline definition, overall firmness and texture are the usual requests. Male skin is generally thicker, which is one of the readings that can justify the larger 600-shot block on a first visit.
What does XERF cost for an international visitor, and can it be done on the day I fly in?
The published rate is identical for everyone: ₩1,300,000 (≈ $930) for 300 shots and ₩2,000,000 (≈ $1,430) for 600, with KRW as what you pay and USD shown for reference. Send the form below with your dates — you get an English reply inside one business day and the slot is held without a deposit. The clinic runs 365 days a year, 10:00 to 19:00 on weekdays and 10:00 to 16:00 on Saturdays, Sundays and public holidays, with no lunch-hour close, so the diagnosis and the shot block can usually sit back to back on one visit.
Consultation

Ask about XERF Lifting

Your questions, answered in English within one business day.

Scientific Evidence

What the research says about deep radiofrequency — peer-reviewed sources

Radiofrequency has been examined as a tightening modality for over twenty years, and XERF inherits that body of work: heating the dermis until collagen contracts and then remodels is the same physics those trials were testing. What the papers listed here settle for us is the practical half of the question — how much energy, delivered how evenly, produces firming that can be measured without injuring the surface.

Each reference resolves to a DOI in an indexed journal, and one of them puts radiofrequency directly against microfocused ultrasound. That is the fork your director stands at once the EVE 3D + AI reading comes back and XERF turns out to be one of several defensible answers.

  1. Alhaddad M, Wu DC, Bolton J, et al. A Randomized, Split-Face, Evaluator-Blind Clinical Trial Comparing Monopolar Radiofrequency Versus Microfocused Ultrasound With Visualization for Lifting and Tightening of the Face and Upper Neck. Dermatol Surg. 2019. doi:10.1097/dss.0000000000001653
  2. Fitzpatrick R, Geronemus R, Goldberg D, et al. Multicenter study of noninvasive radiofrequency for periorbital tissue tightening. Lasers Surg Med. 2003;33(4):232-242. doi:10.1002/lsm.10225
  3. Suh DH, Choi JH, Lee SJ, et al. Comparative histometric analysis of the effects of high-intensity focused ultrasound and radiofrequency on skin. J Cosmet Laser Ther. 2015;17(5):230-236. doi:10.3109/14764172.2015.1022189
  4. Alexiades-Armenakas M, Newman J, Willey A, et al. Prospective multicenter clinical trial of a minimally invasive temperature-controlled bipolar fractional radiofrequency system. Dermatol Surg. 2013;39(2):263-273. doi:10.1111/dsu.12065

References are provided for information — outcomes vary by individual and are assessed at your diagnosis.

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