Korean dual-frequency radiofrequency that firms loose skin from the deeper layers up. Planned and performed by Dr Hass.
Worth £300. For consultations booked before [DATE].
Drag the slider to compare. Skin keeps firming for months after treatment as new collagen forms.
Individual results vary. Suitability is confirmed at consultation.
From your mid-thirties the fibrous network that anchors skin in place starts to loosen. The jawline softens, jowls appear and the neck turns crepey. Filler can't fix this, because volume was never the problem.
XERF rebuilds that support from underneath. Most patients notice their skin feels tighter straight away, and the real change keeps building over the following months.
Two radiofrequencies delivered at once reach the skin, the deeper fascia and the fibro-septal network in a single pass.
6.78 MHz and 2 MHz in every pulse, rather than one fixed frequency.
Shallow, middle and deep layers are treated together for firmness that holds.
Cooling inside the tip protects the surface, so numbing is rarely needed.
Energy spreads evenly across the tip with Wave Fit Pulse, for a smooth, natural result.
Published clinical evidence: Hwang et al., 2025 · Registered trial NCT07585591
What it is, and what it does.
The ideal candidate.
What's different.
Dr Hass performs both, and will recommend honestly.
Step 1Dr Hass assesses your skin, structure and goals in person.
Step 2Each area and depth is planned around your anatomy.
Step 345–90 minutes of deep warmth. No needles, rarely any numbing.
Step 4Back to your day. Firmness builds for months, and we see you again to review.
“Radiofrequency only works if you treat the right depth in the right place. I plan every XERF treatment around the anatomy of the face in front of me, so the result is firmer, never different.”
| XERF | Endolift | |
|---|---|---|
| How it works | Radiofrequency through the skin | Laser fibre beneath the skin |
| Needles | None | Local anaesthetic |
| Downtime | Minimal | 24–72 hours |
| Best for | Firmness and early laxity | Lift plus fat reduction |
| Results last | 12–24 months | 2–3 years |
| From | £2,499 | £1,495 |
“My jawline looks more defined and the jowls I was so self-conscious about have lifted significantly.”
“Six months on and I look refreshed without looking ‘done’. The clinic in Mayfair is beautiful too.”
“Minimal bruising, quick recovery, and the results just keep getting better three months on.”
Anything else you'd like to know? Our team is happy to help.
Most patients describe a deep warmth, like a hot stone massage. Cooling is built into the tip and heat builds gradually, so numbing is rarely needed.
Minimal. Mild redness usually settles within hours, and most patients go straight back to work.
Skin often feels tighter straight away. The main improvement builds over the following months as collagen forms, and results typically last 12–24 months.
Many patients need just one. Dr Hass will advise at your consultation.
Full face is £2,499, and for consultations booked before [DATE] the neck is included free. Consultations are £100 in person or £50 virtual, both redeemable against treatment.
XERF suits early to moderate laxity with minimal downtime. Endolift suits more advanced laxity or where fat needs reducing. Dr Hass performs both and will recommend honestly.
27 Hill Street, Mayfair, London W1J 5LP, a short walk from Green Park station.
Leave your details and our team will call you to find a time that suits you.
Takes under a minute. No obligation.
