HIFU vs Thermage focused ultrasound or radiofrequency, and which suits your skin

The basics

HIFU vs Thermage: two energies, one goal

Both treatments heat tissue under the skin to the temperature at which collagen contracts, then rely on the body's healing response to lay down new collagen over the following months. Neither cuts the skin, neither adds volume, and neither removes loose, folded skin. The difference is where the heat goes and how it gets there.

HIFU focuses ultrasound to a point, much like a magnifying glass concentrating sunlight. Laboratory work on human skin showed it can create small, confined heated points within the skin, with their depth and size set by the energy, exposure time and focal depth. Medical HIFU devices treat the face in rows of these points at fixed depths.

Thermage is a brand of monopolar radiofrequency (RF) made by Solta Medical, part of Bausch Health. An electrical current passes from a treatment tip through the body to a return pad, and the tissue's natural resistance turns it into heat across a broad, even volume of dermis and the fibrous strands beneath it. Thermage FLX is the current generation. It is offered by other clinics, not at SkinRev Lab or IN Eternity Clinic.

Side by side

HIFU and Thermage at a glance

These are general patterns, not a plan. How each feels and what it achieves vary with the device settings, the areas treated, your skin thickness and how much laxity there is to begin with.

Depth

Precise points at the SMAS, or an even warmth in the dermis

The face sags in layers. The skin thins and loses elasticity, the fibrous strands that tether it loosen, and deeper down the SMAS, the sheet of muscle and fascia a surgeon tightens in a facelift, gives way. HIFU's deepest facial depth, about 4.5 mm, sits at the SMAS, which is why it is usually framed as a lifting treatment for the brow, jawline and under the chin.

Monopolar RF heats more evenly through the dermis and the fibrous network beneath it, rather than in separate points. That is why Thermage is usually described as a treatment for skin quality and firmness, including thin, crepey skin around the eyes with a dedicated eye tip, and on body areas such as the abdomen or arms.

These are tendencies, not rules. Many faces have both looser skin and weaker deep support, which is why some doctors combine RF and focused ultrasound in one plan, with the order and spacing set by the treating doctor.

Comfort and downtime

What each feels like, and the downtime

HIFU is commonly felt as short, deep prickles or bursts of warmth as each line is delivered, more so over bone such as the jawline and temples. In a meta-analysis of 17 HIFU studies with 477 people, the average pain score was about 4 out of 10. Thermage is felt as a series of deep, hot pulses; the current handpiece cools the skin before, during and after each pulse and vibrates to make it more tolerable. With either, numbing cream and energy adjustments help, and sensitivity varies a lot between people.

Downtime is usually short. After HIFU the skin may look pink and feel tender to touch for a few days. In a review of over 600 monopolar RF facial treatments, redness and swelling usually lasted less than 24 hours, and 2.7% of treatments had a temporary side effect, all of which resolved. Rarer problems with energy devices include small surface burns or crusts, temporary dents and nerve irritation, and in a thin face, HIFU heat in the fat layer can make hollows look deeper.

Tell the doctor about pregnancy, pacemakers or other implanted electronic devices, metal implants in the area, recent fillers or threads, keloid scarring, bleeding problems and active infection or acne in the area, as these can change the plan or rule a treatment out.

Sessions and results

Sessions, and how long the results last

Both are usually planned as a single session, judged a few months later, then repeated when the effect softens. Some firmness can appear early as collagen contracts, but most of the change comes from new collagen built over the following weeks: about two to three months for HIFU, and two to six months according to Thermage's maker.

The measured changes are real but modest. In a rater-blinded study of 35 people given one focused-ultrasound treatment of the face and neck, 86% were judged to have a visible brow lift at 90 days, with an average rise of 1.7 mm. In 50 people with cheek or neck laxity given one monopolar RF treatment, most improved on masked assessment and tightening was still evident at six months, although the authors noted that how long results last was not yet known.

Clinics often quote six to eighteen months for either, but most studies follow people for only three to six months, and the face keeps ageing afterwards. Treat any fixed duration in an advert as an estimate, not a promise: age, skin quality, weight change, sun exposure and smoking all affect it.

Choosing

Who suits HIFU, and who suits Thermage-style RF

A simple way to think about it: if the main change is that tissue has dropped, focused ultrasound at depth is often the starting point; if the main change is thin, crepey or slightly loose skin, broad dermal heating is often the better match. A doctor's assessment of skin thickness, fat and where the laxity sits matters more than the logo on the machine.

• HIFU tends to suit mild to moderate laxity with some soft tissue over the bone: a softening jawline, early jowls, a slightly heavy brow or loosening under the chin.
• Monopolar RF tends to suit crepey or slightly loose skin, fine lines and texture, including around the eyes and on the body, and faces where skin quality is the main concern.
• A very thin face with little fat needs care with HIFU, because over-treatment can make hollows look deeper.
• Monopolar RF passes current through the body, so it is not used with a pacemaker or other implanted electronic device, or over metal implants in the area.
• Neither suits a face whose main change is lost volume, where a biostimulator or filler may fit better, or heavy, folded skin, where a surgical opinion is more honest advice.

Evidence

What the head-to-head trial and wider studies show

Only a small amount of research compares the two directly. In a randomised, evaluator-blind split-face trial, 20 people with mild to moderate laxity had monopolar RF on one side of the face and micro-focused ultrasound with visualisation on the other. Both sides improved significantly from day 30 through to six months, with no statistically significant difference in laxity scores, satisfaction or side effects.

Each energy also has its own evidence. A meta-analysis of 17 HIFU studies found a moderate improvement and short-term safety, while noting that studies measured outcomes differently and rarely followed people for long. For 6.78 MHz monopolar RF, the frequency Volnewmer uses, a three-dimensional scanning study of 30 Korean women measured lifts of roughly 1.3 to 2.8 mm across facial areas one month after treatment.

In plain terms: for the right face, both give a modest, gradual change, and the assessment and technique matter more than the brand. These studies concern specific medical devices; they do not test SKINLIFT® or VF Lift as protocols, and individual results vary.

Cost

Thermage Singapore price: what drives the cost

Thermage prices in Singapore vary by provider, and we do not quote other clinics' prices. The main driver is the single-use treatment tip, which comes with a set number of pulses called REPs: bigger tips and more pulses cost more. The areas treated, whether a doctor assesses and treats you, and whether review visits and GST are included all change the total.

HIFU pricing follows similar logic: the device and its cartridges, the number of shots or lines, the areas and the doctor's time. Shot counts cannot be compared across brands, because energy, depth and spacing differ between machines.

• Ask for the device brand by name and, for Thermage, whether a new sealed tip is used and how many REPs it carries.
• Ask how many pulses or lines go to each area, and at which depths.
• Ask who assesses you and who performs the treatment.
• Ask whether the price is per session or a package, and whether GST and a review visit are included.

In our network

HIFU, VF Lift and SKINLIFT® in our network

Neither SkinRev Lab nor IN Eternity Clinic offers Thermage, so if you want Thermage specifically, another provider is the right choice. If what you want is firmer skin and a tighter lower face, these are the options in our network.

HIFU is performed by Dr Sin Yong at IN Eternity Clinic, 9 Scotts Road, #12-01 Pacific Plaza, beside Orchard MRT, on the Ultraformer MPT; a session takes about 30 to 60 minutes. He also offers Svelte Touch there, which delivers RF and ultrasound together. Both are priced at consultation; WhatsApp +65 8815 3008.

VF Lift, short for Vertical Facelift, is Dr Sin Yong's own protocol, which he performs himself at SkinRev Lab, #B1-28 CityLink Mall, with an underground link to City Hall and Esplanade MRT. It applies Volnewmer 6.78 MHz monopolar RF through a water-cooled tip along vertical lines planned against the way the face has dropped, adding Ultraformer MPT focused ultrasound where a deeper layer needs support. A face-and-neck session takes about 60 to 90 minutes, and it is priced at consultation.

SKINLIFT® is SkinRev Lab's non-medical option: a 30-minute, multi-sequential pulsed ultrasound session for the jowls, jawline, nasolabial folds and double chin, done by an Aesthetic Specialist without numbing, at S$888 for the face and S$488 for the double chin per session, before GST. For crepey texture rather than lift, SKINTIGHT microplasma is S$588 per zone before GST. SkinRev Lab itself does not inject or prescribe.

Sources

References & sources

1. Alhaddad M, Wu DC, Bolton J, Wilson MJ, Jones IT, Boen M, Goldman MP. A randomized, split-face, evaluator-blind clinical trial comparing monopolar radiofrequency versus microfocused ultrasound with visualization for lifting and tightening of the face and upper neck. Dermatol Surg. 2019;45(1):131-139.
2. Ayatollahi A, Gholami J, Saberi M, Hosseini H, Firooz A. Systematic review and meta-analysis of safety and efficacy of high-intensity focused ultrasound (HIFU) for face and neck rejuvenation. Lasers Med Sci. 2020;35(5):1007-1024.
3. Alam M, White LE, Martin N, Witherspoon J, Yoo S, West DP. Ultrasound tightening of facial and neck skin: a rater-blinded prospective cohort study. J Am Acad Dermatol. 2010;62(2):262-269.
4. Alster TS, Tanzi EL. Improvement of neck and cheek laxity with a nonablative radiofrequency device: a lifting experience. Dermatol Surg. 2004;30(4 Pt 1):503-507.
5. Weiss RA, Weiss MA, Munavalli G, Beasley KL. Monopolar radiofrequency facial tightening: a retrospective analysis of efficacy and safety in over 600 treatments. J Drugs Dermatol. 2006;5(8):707-712.
6. Kim J. Comparative three-dimensional analysis of facial lifting effects across five aesthetic units following continuous radiation 115-watt 6.78-MHz monopolar radiofrequency therapy. Plast Reconstr Surg Glob Open. 2024;12(9):e6137.
7. Laubach HJ, Makin IR, Barthe PG, Slayton MH, Manstein D. Intense focused ultrasound: evaluation of a new treatment modality for precise microcoagulation within the skin. Dermatol Surg. 2008;34(5):727-734.

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