Due to regulatory guidelines, we are unable to list specific brand names on our website and have used replacement terms instead. To find out what these terms refer to, please contact us directly.
Due to regulatory guidelines, we are unable to list specific brand names on our website and have used replacement terms instead. To find out what these terms refer to, please contact us directly.
Due to regulatory guidelines, we are unable to list specific brand names on our website and have used replacement terms instead. To find out what these terms refer to, please contact us directly.

All About Kim Kardashian’s New Favourite Treatment XERF: What to Expect

By SL Aesthetic Clinic
Last Updated:
July 31, 2026

TL;DR:

  • XERF is a Korean radiofrequency skin-tightening treatment that stimulates collagen across multiple depths in a single session.

  • There is no need for needles or surgery, and downtime is minimal

  • The most visible results arrive in a few months, not immediately.

  • Most patients need one session or a short course, followed by annual maintenance.

When Kim Kardashian called XERF her “new fave tightening laser” that “doesn’t even hurt” on Instagram, it sparked a wave of interest globally on the treatment. Already a staple in Korean clinics since 2024 and FDA-cleared in the US last year, XERF has since arrived in Singapore.

If you’re wondering whether it lives up to the hype, or experiencing XERF for the first time, here’s what to expect for XERF treatment in Singapore.

What is XERF?

While Kim Kardashian referred to it as a laser, XERF is actually a radiofrequency skin-tightening device. Developed by South Korean company Cynosure Lutronic, XERF delivers heat beneath the skin to stimulate collagen remodelling without disrupting the skin’s surface.

Radiofrequency treatments have been used since the early 2000s to tighten skin, and XERF builds on this technology with a dual-frequency design.

By targeting collagen remodelling at both the mid-dermis and deeper structural layer, XERF supports firmer, natural-looking skin and helps improve common early to moderate signs of ageing, such as:

  • Skin laxity
  • Fine lines and wrinkles
  • Loss of facial firmness
  • Loose skin around the neck
  • Reduced skin elasticity

What To Expect With XERF Treatment

Consultation

Your doctor begins by mapping your face: assessing skin thickness, the degree of laxity, and the areas that concern you most, before designing a personalised treatment plan with a specific depth setting for each zone.

XERF has three depth modes: shallow (upper dermis, suitable for finer areas such as the forehead), middle (dermis to superficial fat, commonly used for the cheeks and neck), and deep (the fat layer and SMAS, typically used for the jowls and lower face).

Be prepared to discuss your medical history, including any implanted electronic devices, previous energy-based treatments, and any skincare actives you are currently using.

During Treatment

During XERF treatment, the handpiece is moved across treatment zones, with each pulse lasting a second or two. Depending on the number of areas treated, the session typically takes between 15 and 45 minutes.

XERF helps keep the treatment comfortable through cooling: it features an integrated cryogen cooling system that delivers multiple cooling bursts before, during, and after each energy pulse. Many patients can forgo topical numbing cream altogether.

Most patients describe the sensation as a firm, warm pulse followed immediately by a noticeable cooling burst.

After Treatment

You may experience mild redness and warmth in the treated areas, similar to a post-exercise flush. This usually settles within a couple of hours. Most patients can return to work, wear makeup, and continue with their usual activities the same day.
You may notice subtle skin tightening immediately, but full results take two to three months.
For the first 24 hours, avoid saunas, hot showers, strenuous exercise, and alcohol. Daily SPF 50 is recommended.

How Long Do XERF Results Last?

Most patients begin to notice an initial tightening effect shortly after XERF treatment, with more noticeable improvements developing gradually over the following weeks as new collagen forms.

Results typically continue to improve over two to three months, and can last for up to 12 months or longer, depending on factors such as age, skin condition and lifestyle.
XERF works in two distinct stages:

  • The first is when radiofrequency heat reaches the dermis, existing collagen fibres contract, creating a subtle tightening effect that many patients notice within hours of treatment.
  • The second stage is where the more meaningful improvements happen. The controlled heat stimulates fibroblasts – the cells responsible for producing collagen – to generate new collagen fibres.

The fibres must first be produced, then mature into the collagen network that gives skin its firmness. For most patients, these changes continue to develop over the following weeks and peak around the two- to three-month mark.

By then, many patients notice skin that feels firmer and appears more defined, with a sharper jawline, softened fine lines, and an overall improvement in skin quality.

Is XERF Uncomfortable?

No, XERF’s integrated cryogen cooling system is specifically designed to make treatment comfortable without topical anaesthetic, and most patients undergo the procedure without it.

Numbing cream remains an option for those who prefer it or are particularly sensitive in certain areas, so it is worth discussing during your consultation.

Who Benefits Most from XERF – and Who Should Consider Alternatives

XERF is best suited for patients from their 30s with mild to moderate skin laxity, including early jowling, a softening jawline, looser cheeks, or neck skin that has begun to lose firmness (turkey neck).

It is also a good option for patients who found HIFU or earlier RF treatments uncomfortable, thanks to its dual-frequency technology and integrated cooling.

If your main concern is more established jowling, loose neck skin where a stronger structural lift is the goal, or skin crepiness, Ultherapy Prime and RF ThermaLift FLX may be other options.

The Final Word on XERF

XERF may have entered the spotlight through celebrity buzz, but its appeal lies in the technology behind it.

By stimulating collagen at multiple structural levels, it offers a gradual approach to improving skin firmness without needles, surgery or lengthy downtime.

For anyone curious about the treatment, knowing what to expect can help you make a more informed decision before booking your first session.

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