What it is
The devices differ in how they get there — focused ultrasound, radiofrequency across the surface, or radiofrequency through fine needles — and each suits a different degree of laxity. What they share is that the change builds slowly and is modest.
What this page covers
- Micro-focused ultrasound with visualisation, and HIFU lifting
- Monopolar radiofrequency bulk dermal heating
- Bipolar and multipolar radiofrequency as a course of lower-intensity sessions for mild laxity and body contour
- Radiofrequency microneedling of the face and body
- Non-ablative Er:YAG and multi-step laser lifting protocols
- Fractional CO2 where mild laxity accompanies texture and fine lines
- Assessment and management of contour depression, fat atrophy or nerve change after a tightening device
Who it suits
- Someone with mild to moderate laxity whose skin still holds reasonable elasticity, who accepts a change that builds slowly and stays modest, and who will judge it months later rather than the week after
- Someone who arrives asking for one device by name — the focused ultrasound one, the radiofrequency one, the needling one — and will accept a different one of the six this page gathers, or none of them. The examination chooses between them, and sometimes it chooses to switch nothing on
- Someone who can give the whole history before any device is switched on: fixed braces or a retainer, metal restorations or dental implants, any implanted electronic device, pregnancy or breastfeeding, diabetes control, a tendency to keloid scarring, when the area was last threaded, waxed or sugared, any unlabeled cream or mixed preparation, and everything already placed in your face — filler or threads, here or outside the country
- Someone who came out of a tightening session — ours or someone else's — with a dent, a hollow, a numb patch or a smile that no longer matches. Assessing and managing that is a service here, and its answer is not another device passed over the same place
- Not you if your face has gone thin: after weight loss, on a weight-loss injection, or after sleeve or bypass surgery. Heat in a thin face can take fat that was holding the contour up, and it returns slowly and sometimes not completely. What you are describing is usually volume loss rather than laxity, and it belongs with facial contouring or with a surgical opinion. Not you either if what troubles you is hooded upper eyelid skin: that is a question for eye surgery, and none of the six reaches it
When we advise delaying or not treating
- Pregnancy, and breastfeeding. Elective device work is postponed in pregnancy, and that covers everything on this page: the focused ultrasound, every radiofrequency device here, and the laser protocols — not only the ones that break the skin. Breastfeeding is discussed case by case. Say so before the session rather than in it, and before every session rather than only the first, because circumstances change in between
- Metal in the treatment field, and implanted electronic devices. The page says this is settled before any radiofrequency device is switched on; here is what that means in practice. Radiofrequency concentrates current at metal, so the actual risk is a focal burn and a sharp pain at one point of the lower face, which is why the lower face is mapped before the first pass rather than after it. Fixed braces are common in this age group and sit squarely in that field, and so do retainers, metal restorations, dental implants and facial implants. The multi-step laser protocols include intraoral passes, and those are planned around fixed appliances and metal restorations, or not done. Piercings inside the area come out for the session. And it is asked before every session rather than once, because braces get fitted between appointments
- Diabetes that is not well controlled, before anything that breaks the skin — and radiofrequency microneedling and fractional CO2 both do. It raises the risk of infection and slows healing, and on the body the punctures are deeper than on the face. This is a candidacy decision rather than a footnote at the end of the form, and deferring until control improves is care rather than refusal: it comes with an appointment to come back to
- Isotretinoin, now or in recent months. It is asked about before anything that breaks the skin — radiofrequency microneedling and fractional CO2 — because the skin heals differently for a time after it, and that can be a reason to defer the session until the examination judges it safe. Say so even if you have stopped it; that you are not taking it today is not the whole answer
- A tendency to keloid or thickened scarring, in you or in your family — meaning a scar that grew wider or thicker than the cut that made it and stayed raised rather than flattening. The history asks specifically about ear piercing, surgical and cesarean scars, cupping and traditional cautery, all of them familiar local sources of a thickened scar. Keloid tendency is more common in deeper skin, and it is a reason to modify or to decline a plan rather than a detail recorded at the end of it
- Skin thinned by an unlabeled mixed cream, or by a topical steroid used over months. It bleeds more under a needle, ablates unpredictably under a laser, and can scar at a setting that would be uneventful on intact skin. It is left to recover on a plain moisturizer and a gentle cleanser before any device touches it, and the steroid is withdrawn on a plan and by degrees, because stopping it all at once sets off a rebound flare. Bring the container as it is. This is a reason to delay, not a reason to lower the settings
- An area threaded, waxed or sugared within the last few days, and recent sun or an active tan. Both change what the same setting does: the first has stripped the surface layer, and the second leaves the skin taking energy differently. The session is postponed rather than softened, and the question is when the hair was removed, not whether
- An active infection, an open lesion, or severely inflamed acne in the treatment area. The skin is treated first and the session rebooked. And where there is a history of cold sores, before any resurfacing around the mouth, antiviral cover is arranged first — it lowers the risk rather than removing it, so the session is arranged around that possibility rather than pushed through it
- A brown spot or a mole inside a resurfacing field. Fractional CO2 passes over whatever is in the treatment area, so a mole or a pigmented spot there is examined first and covered before the first pass, rather than lasered over — a laser clears the pigment and, with it, the tissue that would tell a pathologist what the spot was. Anything that is changing is examined, and photographed or biopsied if needed, before it is decided whether resurfacing has a place over it
- Filler, threads or any other material already placed in the area, and particularly anything placed outside the country that cannot be named. Timing and interaction are discussed rather than assumed. Gold and other non-absorbable threads are not placed here; where they have been in a face for years, they are assessed rather than heated over
- The request to run it stronger this time because the last course did little. We decline it in that form. Excessive energy over a thin area is precisely the mechanism of a contour depression and of fat loss, and "stronger" is the word that produces the very complication this page also treats. Where a course underdelivered, the answer is to look again at whether the layer that is loose is a layer any device reaches
- A date attached to the request — a wedding, a trip, an occasion a set number of weeks away. We decline the deadline rather than the treatment: the change here builds slowly, and compressing a course toward a date does not make it arrive sooner. It raises the settings instead, and that is where the harm lives. And with resurfacing there is visible recovery to plan around rather than to hope through
- Someone else's face as the goal, or someone else's decision. A filtered photograph is a reference point for the conversation, not a target to be reached, and no device transfers another face onto yours. And where the request has been carried in by a husband, a mother or an in-law, we ask you about it with them out of the room. Saying no is part of the work rather than a failure of it
- Plasma treatment of eyelid skin, asked for by name. It is not offered here as tightening. Each dot of it is a small controlled burn, and in Fitzpatrick IV to VI it carries a well-recognized risk of leaving a pattern of dark or pale marks; scarring and eyelid complications are reported, most of them from work done by non-physicians outside a medical setting. Hooded lid skin is a question for eye surgery
- Snoring, or diagnosed sleep apnea, as a reason to book the laser lifting protocol. A sleep-medicine assessment comes first. What these platforms are marketed for in that area is not a substitute for treating apnea that has been diagnosed, and untreated apnea is a health problem rather than a cosmetic one
Possible effects
Stated in full, because the decision is not sound without them. Start with one line from "What this page covers" above: assessment and management of contour depression, fat atrophy or nerve change after a tightening device. That line is not a service separate from the six devices above it — it is a list of their complications. It is said here because offering it as a service without naming it as a risk leaves you reading about a treatment without being told what you would be consenting to.
- What is expected: redness, warmth, swelling and tenderness for a period that is explained to you; with the needling devices a fine grid marking that stays for some days; and with fractional CO2, redness, crusting and swelling over days — real recovery, to be planned around. Sensation during a session is noticeable, varies between people and between areas, and is usually sharper over bone. We do not describe any of this as free of sensation
- Bruising, particularly in thinner areas and with the deeper body tips, with tenderness for some days alongside it
- Fat loss, and a contour depression. This is the risk the page has been offering to treat without naming. Over-treatment in a thin face can take fat that was holding the contour up, and excessive energy over a thin area can leave a dent that was not there before. It is slow to recover and sometimes does not recover fully. It is managed by observation and, later, by restoring volume — not by more device work over the same place. On the body, over-aggressive treatment under the chin can affect the fat pad unpredictably
- Nerve change. Weakness in the muscles a nerve supplies — a smile that pulls to one side, a lip that does not lift as it did, a brow or a lid sitting lower — and numbness, tingling or altered sensation in the area. Recognized and uncommon. Motor change usually recovers, and it is documented and followed rather than left in silence. What reduces it is planning: treatment avoids bony prominences and known nerve paths, and where the depth is set by a cartridge rather than seen on an image, the mapping is what stands in for sight
- Burns and blistering, including a focal burn where current concentrated at metal that was not declared. The causes repeat: a setting that suited a different face, recent sun, an area threaded or waxed days earlier, and skin thinned by a topical steroid
- Darkening afterward (post-inflammatory pigmentation). The commonest complication in Fitzpatrick IV to VI, and after fractional CO2 on this skin it is common rather than rare. Radiofrequency microneedling can leave the grid of needle tracks visible for a while. It fades slowly, and any date put on it is a guess
- Loss of color, and scarring. Less common, slower to change, and the skin may not come back as it was. Associated with a depth or an energy that did not suit this skin, and with skin that was not at its baseline on the day it was treated
- Infection on a surface that has just been broken, and reactivation of cold sores after resurfacing. Both need a same-day appointment — see the box at the top of this page
- Asymmetry, and a result not worth the time and recovery it cost you. Tightening from any of these is gradual and partial; a course of lower-intensity radiofrequency is cumulative and needs maintaining; and none of it stops laxity from continuing. Anyone describing one of these as an alternative to surgery for marked laxity is describing something else. And the things that decide more than the machine does: who holds the handpiece, how the face was mapped, and what depth was chosen. You are entitled to ask who will be performing your session before you book it
A note on darker skin
Most of the skin treated here is Fitzpatrick III to VI, and that changes which of the six devices is chosen, not only how it is set. What suits deeper skin here: focused ultrasound and radiofrequency do not work by targeting melanin, so they are less tied to skin tone than lasers that go after pigment, which is why they are offered here more readily than the alternatives; radiofrequency microneedling likewise depends less on pigment and is a reasonable option in types IV to VI. What needs caution: "less dependent on pigment" is not "no pigment risk" — post-inflammatory pigmentation still happens, and the grid of needle tracks can stay visible for a while, which is why depth and energy are conservative, intervals longer, cooling part of the treatment rather than an add-on, and postponing after recent sun a rule rather than an exception. Darkening after fractional CO2 on this skin is common rather than rare, which is why density is reduced, the skin is primed beforehand, antiviral cover is considered and sun avoidance is strict. Neck and chest skin is thinner, heals more slowly and pigments more readily than facial skin, and facial settings are not transferable to it. A tendency to keloid is more common across this range and changes the plan on its own. And the honest part: at the deeper end, lowering the settings is not always the safe version — sometimes the safe version is declining. Skin type is judged for each individual in the clinic, and never inferred from nationality.
Afterwards
- Cool the area as you were shown, keep to a plain moisturizer and a gentle cleanser, and put nothing active on the treated skin for the days you are given
- Sunscreen every morning and reapplied, with shade and a hat where you can. Heat counts here on its own, not only the sun — cooking, a car interior, the sauna, the steam room, the gym — because it drives pigment on skin that is prone to it
- Let the grid marking and any crusts come away on their own. No rubbing, no exfoliating, no cloth in the shower; whatever is lifted by hand leaves color in its place
- No threading, waxing or sugaring on the treated area, and no hot water, sauna, steam room or pool — each for the period you were given
- Photograph anything that surprises you on the day it appears, in the same light. And if one side of your face feels as though it is moving differently from the other, photograph your face at rest and then smiling, with both sides in one frame
- Tell us the same day: a blister, a burn, spreading redness, increasing pain, any discharge, or a cluster of small painful blisters around the mouth after resurfacing
- Tell us over the following weeks, early rather than at the next appointment: darkening that is spreading beyond what was treated instead of fading; a dent, a hollow, or an area that looks thinner; numbness that is not easing; and a smile that no longer matches. None of these improves by being waited on
- Judge the result at the review rather than the week after it. The change builds slowly and stays modest, and the photographs are what it is judged against, not the mirror on a good day
- Come to every session with your medicine list up to date, and tell us what changed: pregnancy or breastfeeding, new braces or a retainer, dental work, an implant or an electronic device, diabetes control, when the area was last threaded or waxed, a new mixed cream, isotretinoin. The screening is repeated before every session rather than taken once. And do not book a session on an area that has a dent, a numb patch or a weakness in it — the review comes first
Honestly
Marked laxity and true excess skin are surgical questions that no device answers, and metal in the treatment field — fixed orthodontic braces, metal restorations, implants and implanted electronic devices — has to be settled before any radiofrequency device is switched on.
Common questions
Focused ultrasound, radiofrequency or the needling one — which is the strongest?
There is a small misunderstanding inside the question. These devices do not line up from weakest to strongest; each reaches a different depth and suits a different degree of laxity. What the examination decides is which layer is lax in you, how much face sits above it, and whether it is a layer any device reaches at all. That is why this page gathers six of them, and why two have pages of their own that go into their detail: micro-focused ultrasound and radiofrequency microneedling. The strongest setting is not the most suitable setting, and the difference between those two things is what this whole page is built on.
I heard focused ultrasound takes the fat out of your face — is that true?
It is, and we say so plainly. Over-treatment in a thin face can cause fat loss, and excessive energy over a thin area can leave a contour depression. The fat comes back slowly and sometimes not completely, and it is managed by observation and then by restoring volume later, not by another device over the same place. That is why the examination looks at how much padding your face has before it settles on a setting, and why a thin face is sometimes a reason to decline rather than only a reason to go gently. This very complication is listed on this page as something treated here; it is only honest that it be named as a risk too.
I have braces — can I have this?
Say so before you book, not on the day. Radiofrequency concentrates current at metal, so it can cause a focal burn and a sharp pain at one point of the lower face; the lower face is mapped around the braces, or the plan changes, or a different device is chosen. The same goes for a retainer, metal restorations, dental implants, facial implants and any implanted electronic device. The multi-step laser protocols include intraoral passes, and those are planned around fixed appliances or not done. We ask before every session rather than once, because braces get fitted between appointments.
I am pregnant — do I wait, or is there a gentle version I could have?
You wait. Elective device work is postponed in pregnancy, and that covers everything on this page: the ultrasound, every radiofrequency device here, and the laser protocols — not only the ones that break the skin. There is no light version of this page that passes. Breastfeeding is discussed case by case. Tell us before the session rather than in it. Laxity will not move much over these months, and waiting here costs you no result.
My skin is dark — does this suit me?
Usually yes, and more readily than many lasers, because ultrasound and radiofrequency do not work by targeting pigment. That does not make it risk-free: post-inflammatory pigmentation is still the commonest thing that happens in types IV to VI, the grid of needle tracks can show for a while, and darkening after fractional CO2 on skin like ours is common rather than rare. So we start conservative on depth and energy, lengthen the intervals, postpone after any recent sun, and press hard on photoprotection. And sometimes the safety is in declining rather than in going gently.
I had a tightening session somewhere else and now there is a dent in my cheek — should I have another session to even it out?
No. This in particular is not treated with more heat, and anyone offering you another session over it is offering you its cause. Come and have the area examined, and photograph it from today in the same light and from the same angle. The usual route is watching it first, then restoring volume later if that is needed. If the session was outside the country and you do not know the device or the settings, come as you are and bring whatever paperwork you still have. The problem gets treated; the decision does not get judged.