Written and medically reviewed by Dr. Kamen Ng. Last reviewed 2026-08-25. 10 min read
How HIFU works
We have been running HIFU at this clinic since the first-generation Ultraformer arrived in 2013. Over that time the technology has improved considerably, and so has the marketing around it, though not always in the same direction.
Two things get misrepresented most often. The first is what HIFU does to the face. The second, and by far the more serious, is what is actually inside the machine and the cartridge being used on you.
High-intensity focused ultrasound passes through the skin surface without heating it and converges energy at a precise depth below. At that focal point the tissue reaches a temperature sufficient to create a small, controlled zone of thermal coagulation, typically a fraction of a millimetre across.
Devices deliver at set depths, commonly 4.5 mm, 3.0 mm and 1.5 mm. The deepest of these reaches the superficial musculoaponeurotic system, the fibromuscular layer a surgeon lifts and repositions during a facelift. Shallower depths reach the dermis.
Each coagulation point triggers a wound-healing response. Over the following weeks fibroblasts lay down new collagen and remodel existing collagen, and the tissue contracts modestly as it heals. This is why nothing much appears immediately. The visible change accumulates over roughly eight to twelve weeks, with results generally assessed at three months.
That gradual timeline is a feature, not a shortcoming. It is also why anyone promising a visible lift the same afternoon is describing swelling.
The honest limits
The phrase "non-surgical facelift" does a great deal of work in aesthetic marketing, and it needs qualifying.
A facelift repositions tissue and removes redundant skin. HIFU does neither. It tightens tissue in place through collagen contraction and remodelling. The ceiling of effect sits well below surgery, and no amount of energy or repeat sessions closes that gap.
Published systematic review evidence puts improvement in skin laxity in the range of roughly 18 to 30 per cent, most reliably in the lower face, neck and periorbital region. That is a meaningful, visible improvement in the right patient. It is not a surgical result.
Good candidates have mild to moderate laxity, reasonable skin thickness and quality, and realistic expectations. The early jowl, the softening jawline, the mild submental laxity.
Poor candidates have heavy laxity with significant skin redundancy, marked volume loss where the problem is deflation rather than descent, or very low facial fat where further volume reduction would be unwelcome. In heavy laxity, HIFU spends money without changing the photograph, and I would rather say so at consultation than after three sessions.
Duration. Results typically hold for twelve to eighteen months, after which maintenance is required. Collagen turnover continues and ageing does not pause.
Ultherapy and Ultraformer: the comparison patients ask about
Both are HIFU. Both target the SMAS. They differ in three respects that matter clinically.
| Ultherapy | Ultraformer MPT | |
|---|---|---|
| Visualisation | Real-time ultrasound imaging of tissue layers before energy is deposited | None. Depth confirmed by inference and training |
| Energy delivery | Continuous | Micro-pulsed, in short controlled pulses |
| Comfort | Less comfortable | Substantially more comfortable in practice |
| Versatility | SMAS focus | Multi-depth including superficial passes for skin quality |
| Session time and cost | Longer, higher priced in this market | Shorter, lower priced |
Ultherapy's imaging is a genuine advantage and I will not pretend otherwise. It confirms depth directly rather than by inference, which matters most over the bony and variable regions of the face.
My own preference in most cases is Ultraformer MPT, on the grounds of tolerability and versatility, and because comparative clinical work has found consistent laxity improvement across HIFU platforms irrespective of whether the device offers visualisation. Patients who tolerate the procedure comfortably complete the full recommended shot count in the areas that need it, and an incomplete treatment is the more common cause of disappointing results than the choice between two competent devices.
That is a preference, not a verdict. Ultherapy is a well-built device with a longer regulatory history and its imaging is real. Either can produce a good outcome in trained hands.
Which brings me to the part that actually determines safety.
Why the device must be MDA registered
This is the section I would most like patients to read, because it addresses a risk that is invisible at the point of treatment.
The legal position. Under Section 5(1) of the Medical Device Act 2012, no medical device may be imported, exported or placed on the market in Malaysia unless it is registered under the Act. Separately, every establishment placing medical devices on the market must hold an Establishment Licence from the Medical Device Authority.
Registration is not a formality. For a device in this risk class it requires conformity assessment by a registered assessment body, with documentation covering safety, performance, manufacturing quality and post-market surveillance. Placing an unregistered device on the market is an offence.
Why it matters more for HIFU than for most devices. HIFU deposits enough thermal energy at a precise depth to coagulate tissue. That is the therapeutic mechanism, and it is also the hazard. Energy output accuracy and depth accuracy are the difference between a good result and an injury.
The specific problem in this device category is the consumable. HIFU cartridges, or transducers, contain the ultrasound element and are supplied with a fixed number of shots. They are expensive, and they are the running cost of the treatment. That creates a market in three things.
Counterfeit cartridges manufactured to imitate the original, with no verified energy calibration. Refilled or reset cartridges, where the shot counter is manipulated so a spent cartridge is used beyond its rated life, after the element's output has degraded. And unregistered clone machines built to resemble a known brand, marketed under near-identical names.
None of these is detectable by the patient lying on the couch. The treatment looks identical. What differs is whether the energy arriving at 4.5 mm is the energy the protocol assumes.
When it is not, the consequences are not cosmetic disappointment. They are burns and scarring where output runs high or focus is shallow, prolonged or persistent nerve dysfunction where energy is deposited over a motor nerve, particularly the marginal mandibular branch along the jawline, and unwanted fat atrophy producing hollowing that is difficult to correct. Conversely, a degraded cartridge running below specification produces no result at all, which is the benign version of the same problem.
How to verify it yourself
The Medical Device Authority maintains a public register. You do not need to take anyone's word for this.
One. Ask the clinic for the device brand, model and MDA registration number. A clinic using a registered device will provide this without hesitation.
Two. Search the Malaysia Medical Device Register at mmdr.mda.gov.my. You can search by registration number, brand name or establishment name.
Three. Check the status and expiry date, not just the presence of an entry. A device that appears in the register may still be expired, suspended or cancelled. If nothing returns for your search, the device is not currently registered.
Two further questions worth asking in the room, which cost nothing.
Ask to see the cartridge before it is opened. Original packaging, intact seal, batch or lot number visible. This is normal practice and no reasonable clinic will object.
Ask what shot count your treatment includes, and for which areas. HIFU is dosed in shots. A quoted price without a shot count is not a comparable quote, and underdosing is the most common reason a treatment does not work.
What we do. We use registered devices sourced through licensed local distributors, with original cartridges, and we are happy to show the packaging and provide registration details on request. We treat that as a baseline requirement rather than a selling point, because under Act 737 it is exactly that.
Risks and aftercare
HIFU is well tolerated but it is a medical procedure and it carries real risks.
Common and self-limiting: redness, mild swelling, tenderness to touch, occasional bruising, and a sensation of deep tenderness on chewing for several days. Transient tingling or numbness in treated areas.
Uncommon but significant: temporary weakness of facial muscles from motor nerve involvement, which usually resolves over weeks to months, focal fat atrophy from energy deposited at inappropriate depth, and burns or blistering, which should not occur with correct settings and a calibrated device.
Not suitable: active skin infection or inflammatory lesions in the treatment area, open wounds, pregnancy and breastfeeding, and areas containing permanent implants or unknown injected material. Very thin patients with minimal facial fat require careful assessment, as does anyone with a history of keloid formation.
A note on prior injectables. Where permanent or unidentified filler has been placed previously, treatment planning changes. Always disclose your full injectable history, including work done elsewhere and anything you are unsure about.
Aftercare is straightforward: sun protection, gentle skincare for a few days, and no need for downtime. Avoid other heat-based or energy treatments in the same area for a fortnight unless specifically planned as a combination.
Where HIFU fits in a plan
HIFU addresses laxity. It does not address volume loss, pigmentation, texture, static lines or heavy skin redundancy.
Most faces present with more than one of those, which is why HIFU is usually one element of a plan rather than the whole of it. Sequencing matters, and combining energy-based tightening with volume restoration or collagen biostimulation requires a deliberate order and appropriate intervals, not a same-day package.
The assessment should determine what is actually driving the appearance you dislike. If the answer is laxity, HIFU is a good tool. If the answer is deflation, it is the wrong one, and adding sessions will not change that.
The right question is not which HIFU device to book. It is whether laxity is what is actually driving the change you are seeing, and if so, how much of it HIFU can realistically address. More on why the operator matters more than the machine is in our article on technique.
References
- Medical Device Authority Malaysia, Medical Device Registration, Section 5(1) Medical Device Act 2012 (Act 737)
- Malaysia Medical Device Register, public search at mmdr.mda.gov.my
- Medical Device Authority Malaysia official portal at portal.mda.gov.my
Frequently asked questions
No. It tightens tissue in place through collagen remodelling. It does not reposition tissue or remove skin, and the ceiling of effect sits well below surgery. Reported laxity improvement in review evidence sits in the region of 18 to 30 per cent.
Change accumulates over eight to twelve weeks, with assessment usually at three months. Any immediate change after treatment is swelling, not lift. Anyone promising a visible result the same afternoon is describing swelling.
Generally twelve to eighteen months, after which maintenance is required. This varies with age, skin quality and the degree of laxity treated. Collagen turnover continues and ageing does not pause.
Ultherapy offers real-time visualisation, which is a genuine technical advantage. Ultraformer MPT is more comfortable, faster and more versatile across depths. Comparative work shows consistent laxity improvement across HIFU platforms, so operator skill, correct depth selection and adequate shot count matter more than the choice between two competent registered devices.
Ask for the brand, model and MDA registration number, then search the Malaysia Medical Device Register at mmdr.mda.gov.my. Confirm the status and expiry date rather than simply the presence of a record. A device may appear in the register and still be expired, suspended or cancelled.
There is a deep heat sensation at the moment of each shot, more noticeable over bony areas and along the jawline. Micro-pulsed devices are considerably more comfortable than continuous delivery. Discomfort is manageable and no anaesthesia is generally required.
Yes, if energy is deposited at an inappropriate depth or with incorrect settings. This is one of the reasons device calibration and operator training matter, and why very lean faces require careful assessment before treatment.
Ask to see the cartridge before it is opened, with original packaging, intact seal and a visible batch number. Ask what shot count your treatment includes and for which areas. A quoted price without a shot count is not a comparable quote, and underdosing is the most common reason a treatment does not work.
This article is for general information and does not replace individual medical advice. HIFU is a medical procedure with real risks and should be assessed and performed by a qualified practitioner. Devices used at AOKLINIK are registered with the Medical Device Authority under the Medical Device Act 2012. Individual suitability and results vary and no outcome can be guaranteed.