XERF Skin Tightening

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When Kim Kardashian shared her XERF treatment on her Instagram Stories in late 2025, calling it her "new fave tightening laser" that "doesn't even hurt," NewBeauty she put a spotlight on a technology dermatologists had already been watching closely. (Worth noting: while Kardashian called it a "laser," XERF is actually a radiofrequency device.) At Bella Skin Institute in Calabasas, board-certified dermatologist Dr. Anna Guanche offers XERF, the world's first multifrequency monopolar radiofrequency (RF) treatment Cynosure for non-surgical skin tightening and rejuvenation.

What Is XERF?

XERF is an FDA-cleared, non-invasive skin tightening system from Cynosure Lutronic. The company announced U.S. FDA clearance in late 2025, after the device had already launched abroad—in Korea, Japan, Hong Kong, Singapore, and Canada—where it became one of the most sought-after aesthetic treatments. XERF uses radiofrequency energy to gently heat the deeper layers of the skin, prompting the body to contract existing collagen and produce new collagen and elastin over time. The result is firmer, smoother, more lifted-looking skin—without surgery, needles, numbing, or downtime.

What makes XERF different is that it is the world's first multifrequency monopolar RF system. By combining two frequencies—6.78 MHz and 2 MHz—in a single treatment, XERF can deliver energy across the shallow, middle, and deep layers of the skin, reaching the structural support layers that single-frequency devices cannot consistently target.

How XERF Works

Traditional RF devices operate at a single frequency. XERF's dual-frequency approach allows energy to be delivered precisely where it is needed. The 6.78 MHz frequency addresses the upper dermis to refine surface texture and fine lines, while the deeper 2 MHz frequency reaches the fibrous septa and deeper structural layers. As New York dermatologist Dr. David Kim has explained, the deeper frequency helps the energy travel toward the SMAS (superficial musculoaponeurotic system)—the connective-tissue layer surgeons address in certain facelifts—for tightening on a deeper level than many older technologies reach.

XERF combines several technologies for comfort and precision:

  • Wave Fit™ pulse technology modulates energy output based on real-time treatment conditions.
  • Advanced Integrated Cryogen Delivery (ICD) cooling protects the skin's surface while energy heats the deeper layers, allowing a "never-numb" experience.
  • Accurate Impedance Feedback analyzes each patient's skin in real time, with three depth settings and ten intensity levels for a fully customized treatment.

The mechanism is supported by published research. A 2024 histological study in Skin Research and Technology (Hong J, Ryu HG, et al., DOI 10.1111/srt.13821)—a porcine-model study— Wiley Online Library observed, via Masson's Trichrome staining, "a significant thickening and shortening of collagen bundles" along with "a marked thickening of both the superficial and deep fascial layers." Wiley Online Library In a separate human clinical study of 20 subjects published in Medical Lasers (Hwang, 2025), independent evaluators recorded a statistically significant 40% improvement in skin appearance on the Global Aesthetic Improvement Scale, every patient rated their satisfaction at 7 out of 10 or higher, and no unexpected adverse events were reported. (Both studies were conducted with manufacturer involvement; results in clinical practice vary by individual.)

XERF vs. Thermage: What's Changed

For years, Thermage was a trusted monopolar RF skin-tightening option. XERF represents the next generation of this technology. Both use 6.78 MHz energy, but XERF adds a second 2 MHz frequency that travels deeper to reach structural layers. XERF also delivers more cooling bursts per shot, which means it can typically be performed comfortably—without the numbing cream many patients needed for Thermage—while still reaching collagen-stimulating temperatures. For patients who remember older RF treatments as hot or uncomfortable, XERF offers a notably more comfortable experience. (One distinction to note: Thermage still offers an FDA-cleared eyelid tip, which XERF does not currently have.)

Treatment Areas

XERF is versatile and can be used to tighten and rejuvenate skin on multiple areas of the face and body:

  • Face – Lift and firm the cheeks, refine the jawline, and smooth fine lines.
  • Neck – Tighten lax skin and improve definition.
  • Chest (décolletage) – Smooth and firm crepey skin.
  • Arms – Firm loose skin on the upper arms.
  • Thighs – Improve laxity and texture.
  • Abdomen – Firm loose skin

What to Expect

Your XERF experience begins with a personalized consultation with Dr. Guanche or a member of her team to assess your skin and goals. During treatment, the applicator glides over the skin, delivering RF energy that most patients describe as a warm, comfortable sensation similar to a hot stone massage, with cooling between pulses. A typical session lasts about 30 to 60 minutes depending on the areas treated. No anesthesia or numbing cream is required.

Results and Downtime

XERF results follow a two-phase pattern. Many patients notice some immediate tightening from collagen contraction right after treatment, and results continue to build over the following weeks and months as new collagen forms. There is no downtime—you may have mild redness or warmth that typically resolves within a few hours, and you can return to your normal activities the same day. As Flawless Medspa owner Tiana Speed has described the typical pattern, "results continue improving for about two to three months, and depending on the patient, the results can last a year or longer." The Blast Periodic maintenance can help sustain results. Individual results vary based on skin condition, age, and lifestyle.

Why Bella Skin Institute

XERF is performed under the direction of Dr. Anna Guanche, a board-certified dermatologist, Fellow of the American Board of Dermatology, and founder of Bella Skin Institute in Calabasas. Known as "Dr. Beauty," she shares education with a substantial following—including patients, potential patients and physicians. She speaks internationally at scientific meetings. Dr. Guanche has long focused on advanced treatments with little to no downtime, making XERF a natural addition to her practice.

Packages

Because XERF results build progressively, a series of two treatments is generally recommended for the face to achieve and sustain optimal results, and we offer a package of two for this reason. We also offer a combined face and neck package for patients who want comprehensive lower-face and neck rejuvenation. During your consultation, we will recommend the plan best suited to your skin and goals. Call for pricing.

Frequently Asked Questions

What is XERF? XERF is an FDA-cleared, non-invasive skin tightening treatment that uses multifrequency monopolar radiofrequency energy to firm, lift, and rejuvenate the skin without surgery, needles, or downtime.

Is XERF FDA-cleared? Yes. Cynosure Lutronic announced U.S. FDA clearance of the XERF system on August 18, 2025.

Does XERF hurt? Most patients describe XERF as a warm, comfortable sensation thanks to its integrated cooling technology. No numbing cream or anesthesia is required.

How is XERF different from Thermage? Thermage uses a single RF frequency, while XERF uses two frequencies (6.78 MHz and 2 MHz) to reach multiple skin depths, and XERF's enhanced cooling generally allows treatment without numbing.

How long does a XERF treatment take? A typical session takes about 30 to 60 minutes depending on the areas treated.

Is there any downtime after XERF? There is little to no downtime. Mild redness or warmth may occur and usually resolves within a few hours, and most patients return to normal activities the same day.

How many XERF treatments will I need? For the face, a series of two treatments is generally recommended. Your provider will recommend a personalized plan during your consultation.

When will I see results from XERF? Some tightening may be visible immediately, with results continuing to develop over the following weeks and months as new collagen forms.

How long do XERF results last? Results may last around a year, depending on your skin and lifestyle, and maintenance treatments can help extend them.

What areas can XERF treat? XERF can treat the face, neck, chest, arms, and thighs.

Who is a good candidate for XERF? XERF is well suited for adults with mild to moderate skin laxity who want non-surgical tightening with realistic expectations.

How much does XERF cost? Pricing depends on the treatment areas and plan. Please call Bella Skin Institute for pricing and to schedule a consultation.

Book Your XERF Consultation

Ready to learn whether XERF is right for you? Schedule a consultation at Bella Skin Institute in Calabasas. Call for pricing and to book your appointment with Dr. Anna Guanche's team.