Treatment guide · Lifting & Tightening

XERF in Seoul

A needle-free, dual-frequency monopolar RF treatment that heats deep skin layers to tighten and firm.

Ask the clinic for: 세르프 (XERF 리프팅)

XERF explained

XERF is a skin-tightening device from Lutronic, a Korean company now part of Cynosure Lutronic. In Korea it is called Serf (세르프). It is a newer option in the same group as Thermage, Oligio and Density.

How XERF works

XERF combines two monopolar RF frequencies, 6.78 MHz and 2 MHz, so energy can reach different depths. The heat contracts existing collagen and triggers new collagen over the following months. The handpiece cools the skin surface during each pulse and adjusts energy to skin resistance. The doctor can choose depth and intensity settings by area.

Who XERF is for

• Mild to moderate sagging on the jawline and cheeks
• Loose skin under the chin
• Loss of firmness in the 30s to 50s
• People who want no needles and no downtime
• An alternative to Thermage

Who should avoid XERF

• People with a pacemaker or implanted electronic device
• Pregnant women
• Metal implants in the treatment area, unless a doctor approves
• Active skin infection or open wounds
• Severe sagging that may need surgery

What happens at the appointment

1. Consultation and choice of shot count
2. Cleansing and marking the treatment grid
3. Numbing cream if needed
4. RF pulses over each area with surface cooling
5. Soothing care and sunscreen

Aftercare and flying home

• Use a gentle moisturiser and sunscreen
• Avoid saunas and very hot baths for 1–2 days
• Skip strong exfoliants for a few days
• You can wear makeup the same day in most cases

Side effects and risks

• Redness and warmth for a few hours
• Mild swelling or tenderness for 1–2 days
• Rarely, small burns or blisters
• Very rarely, fat loss causing a dent if energy is too high

How much does XERF cost in Seoul?

₩600,000–₩2,500,000 (about US$450–1,850) — Price depends mostly on the number of shots, and the eye area is often charged separately. As a newer device, prices vary widely between clinics. Prices are estimates and change with promotions.

Why get XERF in Korea?

XERF was developed by a Korean company, and Seoul clinics were among the first to use it. Monopolar RF in Seoul is usually much cheaper than in the US or Europe, and it is often packaged with HIFU.

Frequently asked questions

How much does XERF cost in Seoul?

XERF usually costs about ₩600,000–₩2,500,000 in Seoul. The main factor is the number of shots.

Does XERF hurt?

Most people feel quick bursts of heat. Cooling and adjustable settings make it more comfortable than older RF devices for many patients.

How long does XERF last?

Results usually last about 6–12 months. Many people repeat it once or twice a year.

Can I fly after XERF?

Yes. There is usually no downtime, so you can fly the same day.

Is XERF safe?

It is generally safe when used by trained staff. Rare risks include burns and, with too much energy, small areas of fat loss.

Is XERF better than Thermage?

Both use monopolar RF to tighten skin. XERF uses two frequencies and is newer, while Thermage has a longer track record, so the choice depends on budget and the doctor's advice.

Where to get it in Seoul

Foreigner-friendly clinics cluster around Gangnam, Sinsa–Apgujeong–Cheongdam and Myeongdong. Tap a number to zoom in, then tap a pin to ask the clinic on WhatsApp whether they offer this treatment and for a quote.