SIZE 5x10mm
Covers narrow and thin areas
XERF
Perfectly tuned to your skin. Korea’s only premium dual RF lifting.
A variety of personalized tips
We offer XERF effectors in a range of sizes for precise application tailored to each treatment area and skin characteristic. Based on precise diagnosis, you can experience a customized effector designed exclusively for you.
SIZE 20x20 mm SHOTS 600
Covers entire area
SIZE 10x10mm
Covers small and curved areas
SIZE 20x30 mm SHOTS 600
Wide and thick area coverage
LIEUL Dermatology Clinic provides carefully designed 1:1 customized diagnosis
and the most ideal treatment for your skin.
XERF's innovation, 3D solid elasticity designed with two frequencies
Skin aging doesn't occur in just one layer. XERF's patented dual monopolar RF technology concentrates energy seamlessly from the upper dermis to the deepest layers.
6.78MHz(Superficial Dermis)
Delivers dense thermal energy to the upper dermis, responsible for surface elasticity—triggering immediate collagen contraction and smoothing pores, fine lines, and skin texture.
2.0MHz (Deep Dermis)
Delivers heat down to the deep dermis and the boundary with the subcutaneous fat layer—firming up loosened support structures and inducing long-term elasticity remodeling.
Procedure time
Approximately 30 to 45 minutes
Treatment area
Front face and local areas with decreased elasticity
recovery time
Can return to daily life immediately
Treatment cycle
6 months - 1 year cycle
Differences in detail
create premium results.
Special intelligent cooling gas system
A precision cooling gas system operates in stages to safely protect the skin's surface.
1:1 skin match treatment
We identify the energy pattern that fits each area perfectly, delivering a treatment made exclusively for you.
Instant face fit improvement
It provides an immediate tightening effect right after the procedure, allowing you to return to your daily routine and apply makeup right away.
LIEUL Serf Personal Lifting Plan
Personalized aftercare is tailored differently for each individual, based on the day's skin condition, oil-moisture balance, and the level of irritation right after the procedure. Rather than a one-size-fits-all approach, we provide a customized soothing and regenerating solution precisely calibrated to your skin's own recovery pace.
- 01. High-resolution skin precise diagnosis and design
- 02. Private deep cleansing and skin preparation
- 03. Application of hydro conductive gel exclusively for XERF
- 04. Customized XERF dual energy survey
- 05. Premium soothing calming and post care
Recommended treatment target
- Those who need overall facial contour remodeling
- Those who want improved elasticity and fine-textured density across all skin layers
- Those who have significant fear of pain during procedures
- Those concerned about side effects such as lumps or bulging
- Those who want to return to daily life immediately after the procedure
XERF Q&A
What is the core principle, and how is it different from existing radiofrequency (RF) procedures?While conventional radiofrequency treatments target only a single depth, XERF combines two frequencies (6.78MHz and 2MHz)—Dual RF—to precisely deliver energy across three distinct depth levels, from fine surface lines to deep sagging, improving overall elasticity.
Is there a lot of pain during the procedure?Equipped with an automatic cooling system (ICD) that controls skin surface temperature in real time, it keeps the skin's surface cool while delivering powerful heat beneath it. With just a topical anesthetic cream, you can undergo the procedure comfortably and without pain.
When do the effects appear and how long do they last?You can feel immediate skin tightening right after the procedure, with peak lifting effects appearing between 1 to 3 months as collagen regenerates. The duration of results varies by individual, but treatment every 6 months to a year is generally recommended.
Are there any side effects or recovery period (downtime) after the procedure?As a non-invasive procedure with minimal bruising or swelling, you can return to daily life and apply makeup immediately afterward. Any temporary mild warmth or redness fades within a few hours—simply avoid heat-generating environments such as saunas or alcohol for one week.
Precautions after treatment
We recommend gently washing your face with plain water on the day of the procedure, and you may apply makeup immediately afterward.
The longer the heat energy delivered into the skin is retained, the better the results. For a few days after the procedure, avoid applying cold ice packs or washing your face with cold water for extended periods.
Mild redness, swelling, or a temporary warm sensation may occur right after the procedure, but this typically fades naturally within a few hours.
Be sure to thoroughly apply sunscreen (SPF 30 or higher) whenever going outside during the treatment period.
It's best to avoid alcohol and smoking for at least 3 to 5 days, as they can interfere with skin regeneration.
Please avoid using scrubs, exfoliating cleansers with granules, or peeling products that may irritate the skin for at least one week.
Why LIEUL? Proven expertise
and meticulous care people seek nationwide
Personalized Treatment
Through meticulous consultation,
we provide 1:1 customized treatment.
Harmonious Design
We identify concerns precisely
and pursue natural harmony.
Strict Safety Principles
We follow thorough disinfection
to help prevent infection.
REAL LIFTING LIEUL
LIEUL will accompany your dignified journey toward beauty.