XERF is a dual-frequency radiofrequency treatment that sequentially delivers two RF frequencies within a single pulse — one tuned to superficial dermal layers, the other to deeper subcutaneous tissue — for collagen stimulation and skin tightening across multiple depths in one session, with no incisions, no needles, and no downtime.
How it works
XERF delivers 6.78 MHz and 2 MHz radiofrequency energy sequentially within the same pulse. The higher frequency targets the dermis to stimulate collagen production and tighten existing fibers, while the lower frequency penetrates deeper into subcutaneous tissue for structural support and volumetric redistribution.
What it treats
- Full face, including lower face, midface, forehead, and temples
- Periorbital area (under-eye and brow)
- Neck and jawline
- Early jowling, crepey, or thinning skin
What does the research show?
A 2026 retrospective study in Lasers in Medical Science followed 16 adult patients through 3 months after a single XERF treatment session. Patients showed measurable volumetric redistribution, progressive periorbital lifting with eyebrow and upper eyelid elevation, and improvements in wrinkles, skin evenness, pore size, and oiliness — with perceived facial age reduced by an average of about 3 years. Patient satisfaction was high (4.19–4.25 out of 5), and reported side effects were limited to mild, temporary redness and swelling, with no thermal injury or fat loss observed.
What to expect
Most patients describe XERF as warm but comfortable, with little to no downtime. Subtle tightening can be noticeable right away, with collagen continuing to build over the following 4–12 weeks. XERF is often performed as a series — typically 2–4 sessions per year — for ongoing maintenance and prevention, though visible change has also been documented after a single session.
Is XERF right for you?
XERF is well suited for patients with mild-to-moderate skin laxity, early jowling, or crepey and thinning skin who want a comfortable, low-downtime option for ongoing collagen support. During your consultation, our team will assess your skin and goals to determine whether XERF on its own, or combined with other HALO treatments like Ultherapy Prime for deeper lifting, is the best fit.
Frequently asked questions
Is XERF painful? Most patients describe XERF as warm but not painful; treatments are generally comfortable with little to no downtime.
How many sessions do I need? XERF is often performed as a series, typically 2–4 sessions per year for ongoing maintenance, though some improvement has been documented after a single treatment.
Is there downtime? No significant downtime is expected; most patients return to normal activities immediately after treatment.