PHD Dermatology's Beauty STORY
Pi Bu-ho Kwon In-ho
"Attention 30-40 year olds with thin skin and many fine lines" 'SERF', a customized lifting procedure that reduces pain and firmly restores sagging proportions
[ SERF Information from a Dermatologist ]
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Medical Thought Leader (MTL members) Director Kwon In-ho Selected for 2026 MTL Members Faculty Membership
The MTL (Medical Thought Leader) Members, hosted by Solta Medical Korea Co., Ltd., is a forum where medical professionals using Thermage FLX equipment are selected based on strict criteria to seek clinical advice and share the latest insights and experiences.
Dr. In-Ho Kwon, Director of PHD Dermatology, has been selected as a Faculty Member for 2026, having met Solta Medical Korea's strict internal standards based on his high level of expertise and extensive clinical experience with Thermage FLX procedures.
The experience of depth created by two frequencies
XERF Lifting
This is a monopolar radio frequency (RF) lifting treatment that delivers thermal energy deep into the skin.
Skin tightening, skin elasticity improvement
Increased collagen density
Face line shaping, V-line lifting
Reduction of facial asymmetry and face size
An experience of depth created by two frequencies: the intense harmony of 6.78 MHz and 2 MHz.
SERF is a monopolar RF (radio frequency) medical device that combines two frequencies, 6.78 MHz and 2 MHz, to target and stimulate the skin from shallow to deep layers, inducing collagen regeneration to produce lifting and tightening effects. With 3 depth selections and 10 energy level adjustments, customized treatments are possible according to individual skin types and treatment areas.
Now it's time to meet the new monopolar RF.
XERF, a customized procedure for me
Various tips
Customized lifting for different facial areas is possible with 4 effects.
fluid
The number of shots can be flexibly adjusted depending on face size, sagging, and treatment area.
Minimize pain
Reduces pain burden during procedure by lowering epidermal temperature through the ICD cooling system.
Experience the meticulously set 3-step Depth and 10-step Level tuning. Real-time impedance feedback, which checks skin conditions before the procedure, enables treatment tailored to your skin.
Precise and More Powerful: XERF's 3 Key Points
Stable ICD Cooling System with Minimized Pain
Skin temperature can be monitored in real-time during the procedure, preventing excessive temperature rise and reducing heat sensation and pain.
Precise procedures are possible
You can finely adjust the energy with 3 levels of depth (Shallow-Middle-Deep) and 10 levels.
Powerful effect with two types of wavelengths
Thermal energy can be delivered deep into the skin using two types of wavelengths: 6.78MHz and 2MHz.
Serf Recommended
For those who want to improve skin elasticity both on the surface and deep within.
For those who need customized lifting for specific areas
For those who need to improve fine lines
For those concerned about sagging cheeks, a drooping jawline, or an uneven jawline
For those who need improvement in pores and skin tightening
For those who want a low-pain lifting procedure
FAQ
I have questions about Serf Lifting.
Q
How long will the procedure take?
A
XERF does not require a separate anesthesia process, allowing for immediate treatment. The duration varies depending on the number of shots, taking approximately 40 to 50 minutes for 600 shots.
Q
Will I be able to resume my daily activities immediately after the procedure?
A
Because XERF delivers energy deep into the skin, you can generally resume your daily activities immediately after the procedure and does not require a separate recovery period.
Q
Is there any pain or downtime?
A
Because Serf's cooling system lowers the temperature of the skin surface, it is relatively painless and has little to no downtime. For sensitive skin, there may be slight redness or a sensation of heat, but this usually disappears within a few hours.
Q
Is it safe?
A
XERF is a medical device with verified safety that has received approval from the Ministry of Food and Drug Safety.
Q
What is the difference from other high-frequency equipment?
A
Serf enables energy to be delivered deeper into the skin using two types of wavelengths: 6.78 MHz and 2 MHz. Additionally, the Serf tip is relatively large, allowing more energy to be delivered with the same number of shots.
caution
Please note these points before and after the procedure!
01
Temporary skin irritation, tightness, or redness may occur. This is a temporary and normal reaction that usually disappears within 72 hours.
02
It is okay to apply makeup immediately after the procedure (mineral-based makeup is preferable).
03
When going out, use a laser-specific sunscreen with SPF 30 or higher to prevent sun damage.
04
If the treated skin is slightly red or flushed, avoid washing your face or showering with hot water until the redness subsides.
