Ultherapy Prime is the only FDA-cleared non-invasive treatment that targets the SMAS layer — the same deep tissue layer addressed in surgical facelifts. At Lalian Cheongdam, every session is guided by real-time ultrasound visualization and 3D MetaView imaging, led directly by Jiyoun Kang, to deliver a structural lift that looks natural and lasts.
XERF · Monopolar RF · Non-Surgical Skin Tightening
XERF · Monopolar RF · Non-Surgical SKIN Lifting
XERF in Korea
Monopolar RF Skin Tightening
at Lalian Cheongdam, Seoul
XERF is a dual-frequency monopolar RF device for non-surgical skin tightening — delivering heat to both surface and deep skin layers to rebuild collagen. If you're researching XERF in Korea, here's what matters: at Lalian Cheongdam in Seoul, every session is designed and performed by Dr. Jiyoun Kang, with the depth, energy, and effector chosen for your skin rather than a fixed preset. It sits within Lalian's non-surgical lifting & tightening menu.
PROCEDURE15–30 min
DOWNTIMEMinimal
AnesthesiaTNot required
PROCEDURE
45~90 min
DOWNTIME
Minial
RESULTS LAST
Up to 2 years
HOW IT WORKS
The Mechanism
Most RF treatments use a single frequency.
XERF uses two.
XERF is a monopolar radiofrequency device built on Cynosure Lutronic's laser and energy engineering. Its distinguishing feature is dual-frequency delivery: 6.78 MHz addresses the surface layers where texture and fine elasticity live, while 2 MHz carries heat into the deeper layers that hold facial structure.
That controlled heat triggers a natural healing response, stimulating fresh collagen and elastin over the following weeks. The result is a gradual, natural-looking tightening that builds quietly — supported by three depth levels and ten energy steps that can be tuned to each area of the face.
THE LALIAN DIFFERENCE
Why Lalian for XERF
01
Lalian does not sell Ultherapy by shot count. We design each session by tissue response — placing energy where your skin needs it, skipping where it doesn't. Fewer unnecessary shots means less discomfort and better results.
Every Session, Led by Dr. Kang
At many clinics, RF lifting is quietly handed off to technicians once the consultation ends. At Lalian, it never leaves the doctor's hands — Dr. Jiyoun Kang performs every session herself, from first pulse to last. She watches how your skin responds in the moment and adjusts as she goes, so the treatment follows your face rather than a fixed routine.
02
Why XERF Results Differ Between Clinics
XERF isn't one fixed treatment. With multiple depths, energy levels, and effectors, a single session can be set up in countless ways — and the device can't decide what your skin actually needs. That's a clinical judgment.
At Lalian, that call is Dr. Jiyoun Kang's. With over 12 years in practice and more than 35,000 non-surgical lifting procedures behind her, she builds each protocol around the patient — not a fixed package applied the same way to everyone.
03
Precision Over Volume
Lalian does not sell XERF by shot count. We design each session by tissue response — placing energy where your skin will actually benefit, and holding back where it won't. The goal is a result that looks natural, not a number on a receipt.
THE LALIAN DIFFERENCE
BEFORE YOU DECIDE
CLINICAL REASONING,
SHAPEDBY 12 YEARS IN PRACTICE
The questions patients ask most, answered in depth by Dr. Jiyoun Kang.
BEFORE YOU DECIDE
Two Frequencies, One Device
Energy, matched to depth
Two frequencies flow into the skin at different depths. Together with three depth settings and ten energy levels, they let a treatment be shaped to skin thickness and to the area being treated.
Epidermis
Surface · 0.1–0.3 mm
6.78 MHz
Shallow layer
Dermis
Mid · 0.3–2.5 mm
Hypodermis
Deep · 2.5–4.0 mm
2.0 MHz
Deep layer
Fit for the Face
Four effectors,
four textures
One size cannot fit every face. XERF uses four effector tips, each suited to a different zone and contour. Selecting the right tip for each area is part of designing the treatment — not a default.
60
Effector · XL
20 × 30 mm
Broad, thicker areas. A large contact surface covers ground efficiently.
40
Effector · L
20 × 20 mm
The versatile tip for the face overall — the most common treatment zones.
10
Effector · M
10 × 10 mm
Small, contoured zones such as around the eyes and mouth.
05
Effector · S
5 × 10 mm
Narrow, delicate areas where precise line adjustment matters.
Which tip, at which depth, at which energy — that is a clinical decision, made per zone.
The Procedure Essentials
Procedure time
Approximately 15–30 minutes, depending on the treatment area
Anesthesia
Not required for most treatments — ICD contact cooling for comfort
Downtime
Minimal — mild redness or warmth may last a few hours
When results appear
Gradually over the following weeks as new collagen forms
How long results last
Long-lasting with proper skincare and maintenance
Certification
Approved by Korea's MFDS · cleared by the US FDA · licensed in 13 countries worldwide
MAY EXCLUSIVE
ULTHERAPY PRIME & THERMAGE FLX
Choose your lift.
Choose your gift.
This May at Lalian Cheongdam, select Ultherapy Prime 600 or Thermage FLX 600 — and finish with a complimentary Onda Lifting or Titanium Lifting session, your choice.
WHERE IT WORKS
Best Targeted Areas
XERF is designed to work across four zones where laxity and volume loss tend to show first — each requiring a distinct depth, energy level, and angle that Dr. Jiyoun Kang adjusts in real time.
01
Brow & Forehead
Lifts a heavy or drooping brow line to open up the eye area — one of the most requested treatments among our international patients.
02
Jawline & Lower Face
Tightens and defines a softened jawline, reducing early jowl formation for a sharper, more sculpted profile.
03
Under-Chin & Submental Area
Firms loose skin under the chin without surgery — especially effective when combined with LALICut fat dissolving for a complete contouring result.
04
Neck & Décolletage
Smooths horizontal neck lines and improves skin laxity on the chest — often overlooked areas that reveal age early.
01
Facial Contour & Wrinkles
Refines facial contour and softens wrinkles by stimulating collagen — one of XERF's regulator-approved indications.
02
Brow Lifting
Lifts a heavy or descending brow line to open up the eye area — an approved indication and a frequent request among international patients.
03
Face & Neck Laxity
Firms softened, descending skin across the face and neck — the most common reason patients seek non-surgical lifting.
04
Jawline & Under-Chin
Tightens and defines a softened jawline and under-chin area — often combined with LALIcut for a complete contour.
How Much Does XERF Cost
in Korea?
The most common question about XERF in Korea is price. Because XERF is tailored to each patient, the cost varies by treatment area and the specific protocol your skin needs — so pricing is confirmed during your consultation rather than fixed in advance.
What the price depends on
The treatment area (full face, jawline & neck, or a single zone) and the depth, energy, and effector settings your skin needs
Single vs. combination
A standalone XERF session and a combination protocol (for example, XERF with a skin booster or volumizer) are guided differently
How pricing is confirmed
During a 1:1 consultation, once Dr. Jiyoun Kang has assessed your skin and agreed the protocol with you
Planning your visit
Share your concern areas with our multilingual coordinators via Instagram, WhatsApp or LINE beforehand — they'll guide you in English, Chinese, or Japanese
PERSONALIZED PROTOCOL
Not sure how XERF should be set for your skin?
Find out in a 1:1 consultation.
Dr. Jiyoun Kang assesses your skin thickness, elasticity, and facial structure before deciding the depth, energy, and effector for each zone — so the treatment is built around your face.
PERSONALIZED PROTOCOL
XERF or Thermage FLX?
XERF and Thermage FLX are both monopolar RF skin-tightening treatments — the two are most often compared against each other.
XERF delivers two frequencies across three depths; Thermage FLX is a single-frequency system many patients already know by name. Which one suits you depends on your skin, and Dr. Kang often uses them for slightly different goals.
COMBINATION CARE
Synergy Protocols
PROTOCOL 01
XERF + Skin Booster: Tighten + Hydrate
RF heat and skin boosters are a natural pairing. XERF firms and tightens the deeper layers, and a skin booster delivered afterward restores moisture, plumpness, and glow at the surface — the warmed skin takes up the booster more readily, so the two amplify each other. Dr. Jiyoun Kang matches the booster to your skin and sequences the timing for the best absorption.
PROTOCOL 02
XERF + BBL HERO: Tighten + Even Tone
Firmer skin still shows its age through uneven tone, redness, and pigmentation. XERF handles the tightening, while BBL HERO broadband light targets what tightening can't — brown spots, flushing, and dullness — for clearer, more even, glass-like skin. Dr. Jiyoun Kang plans the two so structure and surface improve together.
PROTOCOL 03
XERF + Rejuran: Structure + Skin Quality
After tightening, layering Rejuran works deeper than hydration — its polynucleotides support skin regeneration, rebuilding texture and elasticity from within so the lift holds on genuinely healthier, more resilient skin.
COMBINATION CARE
COMMON QUESTIONS
COMMON QUESTIONS
FAQ — XERF at Lalian Cheongdam
XERF pricing in Korea varies by treatment area and the specific protocol your skin needs, so it's confirmed during your consultation rather than fixed in advance. A single-zone session, a full-face treatment, and a combination protocol are guided differently. Because the depth, energy, and effector are chosen per patient, the most accurate way to know your cost is a 1:1 assessment with Dr. Jiyoun Kang. Share your concern areas with our multilingual coordinators via WhatsApp or LINE beforehand and they'll guide you in English, Chinese, or Japanese.
No — XERF is not a laser. It is a monopolar radiofrequency (RF) device. Lasers work with light energy at specific wavelengths, while XERF delivers RF heat energy into the skin to stimulate collagen. It's a common mix-up because both are energy-based, but they work on entirely different principles. XERF's RF heat is what drives the gradual skin-tightening effect.
Most patients describe XERF as a series of warm pulses rather than sharp pain. A three-stage ICD contact cooling system lowers the skin surface temperature during each pulse, keeping the experience comfortable, and no separate anesthesia is required for most treatments. Dr. Kang adjusts the energy level in real time to your tolerance and skin response.
XERF is a monopolar RF device, like Thermage FLX, but it delivers two frequencies at once — 6.78 MHz for surface layers and 2 MHz for deeper layers — across three adjustable depths. Ultherapy uses focused ultrasound (HIFU) to reach the deep SMAS layer. RF and ultrasound target different tissue, which is why many patients combine them. Dr. Kang recommends the right approach after a 1:1 assessment.
XERF stimulates new collagen, so the tightening effect builds gradually over the weeks after treatment and is long-lasting with proper skincare and maintenance. Individual results vary by skin type, age, and lifestyle. Dr. Kang will discuss a realistic timeline and maintenance schedule during your consultation.
Downtime is minimal. Mild redness, warmth, or slight swelling may appear and typically settles within hours to a day.
Most patients return to daily activities and can cleanse and apply makeup the same day. For about a week, avoid alcohol, saunas, and intense heat exposure.
XERF is a monopolar RF medical device developed by Cynosure Lutronic. It is approved as a medical device by Korea's Ministry of Food and Drug Safety (MFDS), cleared by the US FDA, and licensed across 13 countries including the United States, Japan, and Korea. It includes real-time surface temperature monitoring and impedance feedback so energy delivery is continuously matched to your skin. At Lalian, every treatment is performed by Dr. Jiyoun Kang.
XERF offers three depth levels, ten energy steps, and four effector tips — hundreds of possible combinations. The device does not decide which combination your skin needs; the physician does. Results depend on how accurately depth, energy, and effector are matched to each zone of your face. At Lalian, that decision is made by Dr. Jiyoun Kang in real time —
not a fixed shot-count package.Yes. XERF takes roughly 15 to 30 minutes with minimal downtime, so it fits well within a short Seoul visit. We recommend booking a consultation before you arrive. Lalian Cheongdam Clinic supports English, Chinese, and Japanese consultation for international visitors.
Every XERF treatment at Lalian is performed directly by Dr. Jiyoun Kang, Representative Director and a Family Medicine specialist trained at Sinchon Severance Hospital, Yonsei University Health System. Treatment is not delegated to technicians — she personally selects the depth, energy, and effector for each zone of your face.