

In Palm Beach Gardens, the best aesthetic work tends to look polished without announcing itself. XERF fits beautifully into that philosophy. This non-surgical skin tightening treatment works below the surface to firm loose skin, refine facial contours, and encourage new collagen without needles or a lengthy recovery. At Aesthetics by Kallee, each treatment is customized to create a fresher, more defined look that still feels completely like you.
XERF is a multifrequency monopolar radiofrequency treatment that delivers controlled heat to multiple tissue depths for structural skin tightening and collagen remodeling.
Unlike conventional RF treatments that work primarily within one depth, XERF combines two frequencies to reach superficial, middle, and deeper tissue. This allows us to address your skin quality and its underlying support in the same appointment.


Structural skin tightening and collagen remodeling across multiple tissue depths
Little to none; mild redness or warmth may last a few hours
Results may last 6 to 12 months, with maintenance based on your skin’s response
Mild to moderate skin laxity, softened facial contours, fine lines, and reduced skin firmness
XERF is designed for skin that has begun to feel softer, looser, or less defined. It can improve mild to moderate skin laxity along the cheeks, jawline, under the chin, and neck while softening fine lines and supporting smoother skin texture.
Because the treatment reaches multiple tissue depths, it can also help patients who want greater facial definition without adding volume. XERF does not remove fat cells or reproduce the degree of correction possible with a surgical facelift, but it can create a visible lift when your skin still has enough elasticity to respond.

XERF delivers two radiofrequency wavelengths, 6.78 MHz and 2 MHz, into the layers of the skin. The controlled heat causes existing collagen fibers to contract while stimulating the gradual production of new collagen and elastin.
Three depth settings and ten intensity levels allow treatment to be adjusted to your skin’s current condition. Accurate Impedance Feedback evaluates how your skin is receiving the energy in real time, while Wave Fit pulse technology helps regulate energy delivery. Advanced Integrated Cryogen Delivery cools the skin’s surface, keeping the temperature comfortable as deeper tissue is heated.
XERF offers collagen-boosting power in an appointment that fits easily into a full Palm Beach Gardens calendar.
Benefits may include:


You may be a candidate for XERF if you have mild to moderate skin laxity and want to tighten loose skin without surgery. It can also work well as a preventive collagen treatment for patients beginning to notice less firmness through the lower face or neck.

XERF may not provide enough correction for significant skin laxity or heavy jowling that would respond better to surgery. Treatment may also be inappropriate during pregnancy or for patients with certain implanted electronic devices, metal in the treatment area, active infections, open wounds, or uncontrolled medical conditions. Your health history will be reviewed before treatment.

Your appointment begins with an assessment of your skin concerns, facial structure, and areas of laxity. After the skin is cleansed, a grounding pad is placed on the body, and the XERF handpiece is moved systematically across the treatment area.
You’ll feel controlled waves of heat followed by cooling. Patients often compare the sensation to a hot stone massage, although brief tingling or stronger warmth may occur around bony areas. Most patients do not need numbing cream. We monitor your comfort, your skin’s surface, and the device feedback throughout treatment.


You may experience mild redness or warmth for a few hours. Occasional tenderness or slight swelling can occur, although most patients leave looking ready for the rest of their day.
There is typically no required social downtime. Makeup may be applied once your skin feels calm.
Most patients can exercise normally the following day. Use sunscreen, avoid excessive heat if your skin feels warm, and pause strong exfoliants or retinoids until any sensitivity settles.
Keep your routine simple, moisturize well, and resist judging your final result too early. Collagen remodeling needs time.
During the first one to two weeks, the skin may begin to feel firmer, but the more meaningful change develops as new collagen and elastin form. Definition and skin quality can continue improving for two to three months after your final session.

Some patients are pleased after one session, while others benefit from two treatments for more noticeable structural lifting. Your recommended series will reflect the degree of skin laxity, the areas treated, and your desired level of correction.
XERF pricing depends on device time, the number and size of the treatment areas, the complexity of correction, and the number of sessions included in your plan. After evaluating your skin, we’ll provide clear pricing and discuss any future maintenance before you commit.
XERF works without needles and requires less recovery than RF microneedling, making it especially appealing when laxity is the primary concern. RF microneedling may be preferred when surface texture, enlarged pores, or acne scars need greater attention. A surgical facelift remains the stronger option for significant skin laxity and advanced tissue descent.

Yes. XERF may complement Botox, dermal fillers, PRP or PRF, RF microneedling, and professional skin treatments. Pairing procedures can address movement, volume, texture, and structural support from different angles. We’ll sequence treatments carefully to protect your skin and preserve balanced results.
Technology can deliver energy, but the treatment strategy determines where that energy goes.
Kallee Sullivan, MMS, PA-C, approaches XERF with the same precision she brings to facial balancing: studying proportions, listening closely, and creating a plan that respects your natural structure.
Her medical background in emergency medicine supports a safety-focused approach, while the private, concierge setting keeps your experience personal from consultation through maintenance.

Most patients describe warmth rather than pain. Integrated cooling helps maintain a comfortable surface temperature, and numbing is usually unnecessary.
Yes. XERF received U.S. FDA clearance in 2025 for dermatologic and general surgical procedures involving electrocoagulation and hemostasis. Its tightening effects occur through controlled soft-tissue coagulation.
XERF is designed for structural skin tightening, and treatment settings are customized by depth and intensity. Your provider will evaluate facial volume before treatment and select an appropriate plan.
Because radiofrequency energy is not pigment-dependent, XERF can be used across a broad range of skin tones.
XERF can improve mild to moderate laxity, but it cannot remove excess skin or reposition tissue to the extent of a surgical facelift.
One treatment may create visible improvement. A second session can build on the collagen response when greater firmness or definition is desired.