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PH Med · Structural Skin Tightening

XERF™

World's First Multifrequency Monopolar RF · By Cynosure Lutronic

RF energy delivered to exactly the right depth — firming, lifting, and redefining your skin’s structure without surgery, needles, or downtime.

XERF device side view used for non-invasive skin tightening

2

Frequencies · 6.78 & 2 MHz

3

Depth Settings

10

Intensity Levels

12–18mo

Results Duration

The Technology

What Is XERF?

A Softer, More Confident You, Without Changing Who You Are

XERF is the world’s first multifrequency monopolar radiofrequency system — a new class of skin tightening that delivers thermal energy to precisely controlled depths within the skin. Developed by Cynosure Lutronic and FDA cleared, it produces structural results that conventional RF devices can’t reach.

 

Where traditional RF treatments apply energy at a single frequency and fixed depth, XERF combines 6.78 MHz and 2 MHz simultaneously — targeting the superficial and deep structural layers in one treatment. The result is collagen remodeling at every level, from surface smoothness to deep fascial tightening.

 

An onboard Accurate Impedance Feedback (AIF) system reads your skin’s electrical properties in real time, adapting energy delivery to your unique tissue profile throughout your entire session. No fixed presets — every pulse is calibrated to what your skin actually needs in that moment.

 

At PH Med, XERF is performed exclusively by Dr. Pauline Bui — a Board Certified Physician with advanced imaging training. Her image-guided background directly informs how depth, intensity, and treatment mapping are applied to each patient’s anatomy.

XERF device front view by Lutronic for RF skin tightening

Under The Surface

Precision Built In

Three technologies work together in every XERF session — none of which exist in conventional RF devices.

Surface + Mid Dermis

Real-time tissue analysis that reads your skin’s electrical properties continuously. XERF adapts to your unique skin profile — adjusting energy delivery based on what it detects, not a fixed preset.

Accurate Impedance Feedback

Real-time tissue analysis that reads your skin’s electrical properties continuously. XERF adapts to your unique skin profile — adjusting energy delivery based on what it detects, not a fixed preset.

Accurate Impedance Feedback

Real-time tissue analysis that reads your skin’s electrical properties continuously. XERF adapts to your unique skin profile — adjusting energy delivery based on what it detects, not a fixed preset.

Dual Frequency System

Two Frequencies. Every Layer.

Three technologies work together in every XERF session — none of which exist in conventional RF devices.

Accurate Impedance Feedback

6.78

MHz — Shallow Frequency

Fine Lines · Texture · Tone

The 6.78 MHz energy targets the upper skin layers — smoothing fine lines, improving texture, and stimulating collagen production near the surface where visible skin quality lives.

Deep Dermis + Fascia

2

MHz — Deep Frequency

Lift · Firmness · Structure

The 2 MHz frequency reaches the foundational structural layers and the fascia — triggering collagen remodeling, fascial contraction, and the real lifting effect that defines XERF’s results.

What To Expect

Your XERF Session

Three technologies work together in every XERF session — none of which exist in conventional RF devices.

01

Consultation + Mapping

Dr. Bui evaluates your facial anatomy, identifies areas of laxity, and builds a customized depth and intensity map. No two protocols are identical.

02

No Prep Required

No numbing cream. No pre-treatment injections. Wave Fit™ pulse technology and Integrated Cryogen Delivery keep you comfortable throughout.

03

30–45 Min Treatment

The handpiece moves across mapped zones while AIF reads and adjusts in real time. Most patients describe the sensation as deeply warm and tolerable.

04

Walk Out. No Downtime.

Return to your day immediately. Minor redness may be present for a few hours. No peeling, no bruising, no wound care. Results begin building from session one.

See It In Action

XERF in Motion

See what makes XERF different — the technology, the treatment experience, and the results you can expect.

Clinical Results

Before + After

XERF structural skin tightening before and after treatment photos

Jawline + Neck Tightening

1 treatment · Courtesy of Dr. Dianne Quibell

XERF before and after skin tightening treatment results

Lower Face + Chin

1 treatment · Courtesy of Dr. Dianne Quibell

XERF skin tightening before and after results on patient

Full Face Lifting

2 treatments · Face + Neck protocol

Individual results vary. All before/after images shown are from Cynosure Lutronic clinical data. Patient results depend on individual anatomy, skin laxity, protocol selection, and number of treatments. A physician consultation with Dr. Bui determines your optimal plan.

As a busy mom, XERF fits into my schedule easily. It’s comfortable,
there’s no downtime, and I could feel tightening right away.

Brooke · Actual Patient

Why PH Med for XERF?

Not all skin tightening is the same — and neither is the clinic behind it.

Physician-Led Care

Every XERF treatment at PH Med is overseen by a board-certified physician — not delegated to unsupervised technicians. Dr. Pham personally evaluates your skin structure and customizes each session for optimal results.

Assessment-First Approach

We don’t apply a one-size-fits-all protocol. Your XERF treatment plan begins with a comprehensive skin assessment — mapping your tissue density, laxity zones, and structural needs before a single pulse is delivered.

Clinical-Grade Environment

PH Med operates with medical-grade standards — from our equipment calibration to our sterile treatment rooms. Every detail is designed for safety, precision, and the kind of results that only a clinical setting can deliver.

Frequently Asked Questions

XERF (Extended Radio Frequency) is an FDA-cleared structural skin tightening device by Cynosure Lutronic. It uses dual-frequency monopolar RF energy — 6.78 MHz and 2 MHz simultaneously — to heat tissue at multiple depths. This stimulates collagen remodeling at the surface while tightening the deeper fascial layer, producing visible lifting and firming without surgery, needles, or downtime.
A typical XERF treatment session takes 30–45 minutes depending on the area being treated. Facial treatments tend to be shorter (around 30 minutes), while larger areas like the abdomen may take closer to 45 minutes. There is no recovery time needed — you can return to your normal activities immediately.
Most patients describe XERF as a warm, comfortable sensation. The device includes an Integrated Cryogen Delivery (ICD) system that actively cools the skin surface during treatment, keeping you comfortable while RF energy works beneath the surface. No numbing cream or anesthesia is required.
Many patients notice initial skin tightening immediately after their first session. The most significant improvements develop over 4–8 weeks as your body produces new collagen and the structural tissue remodels. Peak results are typically visible around week 8, with continued improvement for up to 3–6 months.
Most patients achieve excellent results with a series of 3–4 sessions spaced 2–4 weeks apart. During your initial consultation, Dr. Pham will assess your skin and recommend a personalized treatment plan based on your specific goals and tissue condition.
XERF is versatile and can treat multiple areas including the face (jawline, cheeks, forehead), neck, décolletage, arms, abdomen, and thighs. It is particularly effective for areas with mild to moderate skin laxity where non-invasive tightening can make a visible difference.
There is virtually no downtime with XERF. You may experience mild redness or warmth in the treated area for a few hours, similar to a mild sunburn sensation. Most patients return to work, exercise, and normal activities immediately. No special aftercare is required beyond standard sun protection.
Yes. Unlike some laser treatments, XERF uses radiofrequency energy rather than light, making it safe and effective for all skin types and tones (Fitzpatrick I–VI). The Accurate Impedance Feedback system reads your skin’s unique electrical properties in real time and adjusts energy delivery accordingly.

Ready to Transform Your Skin?

Experience Houston’s only XERF structural skin tightening treatment. FDA-cleared, physician-led, zero downtime.

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