What Is XERF?
XERF is a non-surgical skin tightening treatment that uses dual-frequency monopolar radiofrequency (RF) technology.
The system operates at 6.78 MHz and 2 MHz, allowing RF energy to create controlled heat at different tissue depths. This thermal effect stimulates collagen contraction and remodeling, helping the skin gradually become firmer and more defined.
XERF is mainly used for concerns such as skin laxity, a less-defined jawline, sagging cheeks, and under-chin laxity, with minimal downtime.
How Does XERF Work?
XERF uses dual-frequency monopolar RF to heat tissue at different depths beneath the skin.
The 6.78 MHz frequency primarily heats more superficial and dermal structures, while the lower 2 MHz frequency allows energy to reach deeper tissue. In its dual-frequency mode, the two frequencies are delivered sequentially within a single shot.
The controlled heat causes existing collagen fibers to contract and stimulates longer-term collagen remodeling. As this process continues over the following weeks and months, the skin may gradually appear firmer and tighter.
XERF also includes surface cooling and temperature monitoring to help manage heat at the skin surface and improve comfort during treatment.
What Are the Benefits of XERF?
- Dual-Frequency RF – Uses 6.78 MHz and 2 MHz to heat tissue at different depths.
- Collagen Stimulation – Encourages gradual collagen remodeling and improved skin firmness.
- Customizable Treatment – Energy settings and treatment depth can be adjusted according to the area and individual skin condition.
- Integrated Cooling – Helps manage surface temperature and improve comfort during treatment.
- Minimal Downtime – Most patients can return to normal daily activities after treatment.
Who Is XERF Suitable For?
XERF may be suitable for people who:
- Have mild to moderate skin laxity.
- Want a firmer-looking jawline or lower face.
- Have sagging around the cheeks or under-chin area.
- Want to stimulate collagen without surgery.
- Prefer a treatment without needles.
- Want minimal interruption to their daily routine.
Suitability depends more on your skin condition, facial anatomy, tissue thickness, and treatment goals than age alone.
Which Areas Can Be Treated with XERF?
Common treatment areas include:
- Cheeks – For mild skin laxity in the mid and lower face.
- Jawline – To improve the appearance of facial definition.
- Under Chin – For laxity and contour concerns below the jaw.
- Selected Areas Around the Eyes – Using an appropriate treatment tip.
- Neck – For skin that has started to lose firmness.
The appropriate treatment area, tip, and energy settings should be determined after assessment by a doctor.
What Happens During a XERF Treatment?
- Consultation and Assessment – The doctor evaluates your skin, degree of laxity, facial structure, and treatment goals.
- Skin Preparation – Makeup and skincare products are removed from the treatment area.
- XERF Treatment – The doctor selects the appropriate tip, treatment mode, and energy settings before delivering RF energy to the planned areas.
- After Treatment – Most patients can return to their normal routine. Temporary warmth, redness, or mild swelling may occur.
A typical treatment takes approximately 30–60 minutes, depending on the treatment area and number of shots.
How Many XERF Shots Do I Need?
There is no standard number of XERF shots that is suitable for everyone.
The number of shots depends on several factors:
- Treatment Area – A full-face treatment generally requires more shots than treating only the jawline or under-chin area.
- Degree of Skin Laxity – Different concerns may require different treatment plans.
- Tip and Treatment Mode – Different areas may require different treatment settings.
- Facial Anatomy – Tissue thickness and facial structure vary between individuals.
- Treatment Goals – The plan may differ depending on whether the main concern is the cheeks, jawline, under chin, or overall facial tightening.
More shots do not automatically mean better results. Energy level, treatment depth, placement, and overall treatment planning are also important.
Does XERF Hurt?
During treatment, you may feel warmth or brief heat as RF energy is delivered.
The sensation varies from person to person and depends on the treatment area and energy level. XERF includes a cooling system that helps control surface temperature and improve comfort during treatment.
Many treatments can be performed without topical numbing cream, although comfort management should be discussed with the doctor before treatment.
What Are the Side Effects of XERF?
XERF is a non-surgical treatment, but temporary side effects can still occur.
- Temporary Redness – May occur immediately after treatment.
- Mild Swelling – Can occur in some patients.
- Warmth or Tightness – The skin may feel warm or tight for a short period.
- Tenderness – Some areas may temporarily feel more sensitive to touch.
If you experience severe pain, significant swelling, unusual skin changes, or symptoms that do not improve as expected, contact your doctor for further evaluation.
Who Should Speak with a Doctor Before XERF?
Tell your doctor before treatment if you:
- Have an underlying medical condition.
- Take regular prescription medication.
- Have an implanted electronic device such as a pacemaker or defibrillator.
- Have metal or another medical implant near the treatment area.
- Have an active infection, wound, or inflammation in the treatment area.
- Have recently had fillers, thread lifting, surgery, or another aesthetic procedure in the same area.
- Are pregnant.
When Will I See Results from XERF?
Some patients may notice an initial feeling of firmness after treatment because of the immediate thermal effect on existing collagen.
The result then develops gradually as collagen remodeling continues.
- Some initial tightening may be noticeable after treatment.
- Changes generally become more noticeable over the following 1–3 months.
- Individual results vary according to age, skin condition, degree of laxity, energy settings, and treatment plan.
The duration of results also varies between individuals. Your doctor can reassess your skin over time and advise whether maintenance treatment may be appropriate.
How Much Does XERF Cost in Thailand?
The price of XERF in Thailand depends mainly on the number of shots, treatment area, clinic, doctor, and current promotional package.
Estimated XERF Prices in Thailand
| Approximate Shots | Estimated Price | Example Treatment Area |
|---|---|---|
| 200–300 shots | Approximately 17,000–27,000 THB | Targeted areas / Jawline / Under Chin |
| Around 450 shots | Approximately 35,000–40,000 THB | Multiple facial areas |
| Around 600 shots | Approximately 41,000–50,000 THB | Full-face or more extensive treatment plans |
*These are approximate market price ranges in Thailand and are not the current prices at Smooth Clinic. Actual prices may vary according to the number of shots, treatment area, clinic promotion, and doctor’s assessment.
What Affects the Price of XERF?
- Number of Shots – Larger treatment plans generally require more shots.
- Treatment Area – Treating several facial areas usually costs more than treating one specific area.
- Tip and Treatment Plan – The doctor may choose different settings according to the treatment area.
- Clinic and Doctor – Pricing varies between providers.
- Current Promotions – Promotional packages may significantly affect the final price.
When comparing XERF prices in Bangkok, check whether the package clearly states the number of shots, treatment areas, device used, doctor’s fee, and follow-up care.
For an individual assessment and current pricing at Smooth Clinic, contact 088-121-8888 or Line OA: @smoothclinic.
XERF Aftercare
- Avoid excessive heat such as very hot showers, saunas, or steam rooms if your skin still feels warm or sensitive.
- Avoid excessive sun exposure and use broad-spectrum sunscreen regularly.
- Use gentle skincare if the skin feels sensitive after treatment.
- Makeup can usually be applied once the skin feels comfortable and there is no significant irritation.
- Follow any additional aftercare instructions provided by your doctor.
XERF vs. Thermage FLX vs. Oligio X vs. Volnewmer
XERF, Thermage FLX, Oligio X, and Volnewmer are all monopolar RF skin-tightening technologies, but they differ in frequency, energy delivery, cooling systems, and treatment protocols.
| Device | Technology | Key Difference |
|---|---|---|
| XERF | Dual-Frequency Monopolar RF 6.78 + 2 MHz |
Uses two RF frequencies to create heat at different tissue depths, with surface cooling and temperature monitoring. |
| Thermage FLX | Monopolar RF 6.78 MHz |
Established monopolar RF platform using cooling and impedance-based energy delivery. |
| Oligio X | Monopolar RF | Uses bulk RF heating to stimulate collagen and improve skin firmness. |
| Volnewmer | Monopolar RF 6.78 MHz |
Uses continuous water cooling and multiple tip sizes for different treatment areas. |
There is no single RF device that is automatically best for everyone.
The appropriate treatment depends on your skin laxity, facial anatomy, treatment goals, budget, previous procedures, and tolerance for heat or discomfort.
Read More: Oligio X
Is XERF Safe?
XERF includes surface cooling, temperature monitoring, and controlled RF energy delivery to help manage treatment temperature.
In August 2025, XERF received U.S. FDA 510(k) clearance as a Class II electrosurgical RF device under the indications listed in its FDA documentation.
FDA clearance does not mean that a treatment is completely risk-free. A doctor should assess your medical history, treatment area, previous procedures, and suitability before treatment.
Where Should I Get XERF in Bangkok?
When choosing a clinic for XERF in Bangkok, price should not be the only consideration.
Look for a clinic that:
- Uses an authentic XERF device and treatment tips from a verifiable source.
- Provides a medical consultation before treatment.
- Clearly explains the number of shots and areas being treated.
- Customizes energy settings according to your skin and facial anatomy.
- Provides clear aftercare instructions and a contact channel after treatment.
- Has verifiable patient reviews or before-and-after photographs.
For international patients, it is also useful to confirm the total treatment price, what is included, whether consultation and follow-up are included, and which communication channels are available in English before booking.
Why Choose Smooth Clinic for XERF?
Smooth Clinic is located in Times Square Building, Asok, with convenient access from BTS Asok and MRT Sukhumvit.
Before treatment, the doctor assesses your skin and facial structure to determine the treatment area, number of shots, and appropriate energy settings.
For XERF consultation and current pricing, contact 088-121-8888 or Line OA: @smoothclinic.
Conclusion
XERF is a non-surgical dual-frequency monopolar RF treatment that uses 6.78 MHz and 2 MHz energy to create controlled heating at different tissue depths and stimulate collagen remodeling.
It may be suitable for people who want to improve mild to moderate skin laxity, define the jawline, or tighten the lower face and under-chin area without surgery and with minimal downtime.
Results vary between individuals, so the treatment area, number of shots, energy settings, and overall treatment plan should be based on an individual assessment by a doctor.
XERF FAQs
Does XERF Hurt?
You may feel warmth or brief heat during treatment. The level of sensation varies between patients and treatment areas. XERF includes surface cooling to help improve comfort.
Is There Downtime After XERF?
XERF generally involves minimal downtime. Most people can return to normal daily activities after treatment, although temporary redness, warmth, swelling, or tenderness may occur.
How Many XERF Treatments Do I Need?
The number of treatments depends on your skin condition and individual response. Many treatment plans begin with one session followed by reassessment before deciding whether additional treatment is needed.
How Many XERF Shots Do I Need?
There is no standard number for everyone. The appropriate number depends on the treatment area, degree of laxity, facial anatomy, treatment goals, and doctor’s assessment.
When Will I See Results?
Some initial firmness may be noticeable after treatment, while more gradual changes generally develop over the following 1–3 months as collagen remodeling continues.
How Long Do XERF Results Last?
The duration varies between individuals and depends on age, skin condition, treatment settings, natural aging, and skincare habits.
Is XERF Safe?
XERF incorporates cooling and temperature monitoring and received U.S. FDA 510(k) clearance in 2025. Temporary side effects are still possible, so treatment should be planned after an individual medical assessment.
What Is the Difference Between XERF and Thermage?
Both are monopolar RF treatments. XERF uses 6.78 MHz and 2 MHz, while Thermage FLX primarily uses 6.78 MHz. Their energy delivery, cooling systems, and treatment protocols also differ.
References
- U.S. Food & Drug Administration (FDA). XERF — 510(k) Premarket Notification K251327. FDA 510(k) Database
- Lee KM, Chun SI, et al. (2024). Efficacy of dual-frequency noninvasive monopolar radiofrequency in skin tightening: Histological evidence. Skin Research and Technology. PubMed Central
- Weiss RA, Wang J, DiBernardo B, Bhatia AC. (2026). Clinical Outcomes Following Dual-Frequency Noninvasive Monopolar Radiofrequency Treatment for Facial Laxity and Lower Face Lifting: A Prospective Multicenter Study. PubMed Central
- Erlich G, Dahan E, Wolf Y. (2026). Objective and subjective retrospective evaluation of XERF, a novel single-shot dual-frequency non-invasive monopolar radiofrequency. Lasers in Medical Science. PubMed Central