LDM ultrasound explained: how the technology works

What LDM stands for, and how it works

LDM stands for Local Dynamic Micro-massage. It is a skin treatment that uses ultrasound switching rapidly between different frequencies, so the tissue receives a fast-changing mechanical stimulus, a kind of micro-massage, rather than a steady dose of heat.

That is the key difference from most energy-based facials. Lasers, RF and HIFU work by heating tissue to trigger repair. LDM is designed to stimulate skin cells mechanically without that controlled heat injury, which is why it is usually offered to skin that reacts badly to heat.

Frequency matters because of depth. In general, lower ultrasound frequencies travel deeper and higher frequencies act closer to the surface, so alternating between them spreads the stimulus through different layers. SkinRev Lab describes SKINLDM as aimed at the upper and mid-dermis, rather than the deeper support layers that lifting treatments target.

Early LDM devices alternated between two frequencies, which is why you will see it described as dual-frequency ultrasound. Newer versions alternate between three. SKINLDM at SkinRev Lab alternates between 1, 3 and 10 MHz, and every session includes a basic facial.

SKINLDM at SkinRev Lab

What LDM is said to do, and what the evidence shows

The proposed mechanism is that rapidly changing ultrasound prompts skin cells to produce heat shock proteins, which are involved in repair, while calming inflammation and supporting hydration and collagen. Some of this comes from laboratory work: one study found 10 MHz ultrasound raised heat shock protein levels in cells grown in a dish. That is useful background, but it is not the same as showing an effect in human skin.

Clinical studies are small but consistent in direction. A 2021 study at a Seoul hospital gave 26 adults with rosacea or acne four weekly dual-frequency ultrasound sessions on both cheeks and reported less redness and less water loss through the skin at six weeks, with no serious side effects. There was no placebo group.

A 2025 retrospective study of 22 people with acne treated with triple-frequency LDM reported improvement on photographs graded by dermatologists who did not know the treatment details. One author worked for the device maker. A 2024 study in 48 people after nose surgery found LDM shortened swelling and bruising compared with ice packs.

Our honest summary: the early evidence is encouraging for calming and hydrating reactive skin, but the studies are small and short, and large randomised trials are still missing. Individual results vary.

LDM compared with HIFU and other ultrasound treatments

All of these use ultrasound, but they do very different jobs. HIFU and focused ultrasound concentrate energy at a set depth to heat and tighten support layers. LDM spreads a gentle, changing stimulus through the skin to calm it. Choosing between them depends on whether your main problem is skin condition or sagging.

SKINLIFT non-surgical face lift · HIFU at SkinRev Lab or IN Eternity Clinic · Ultherapy vs HIFU in Singapore

Who an LDM facial suits, and who should look elsewhere

LDM makes most sense when your skin needs calming before it needs anything else. It is not a lifting treatment and not a pigment treatment, and booking it for those goals usually leads to disappointment.

• Suits: sensitive, reactive or redness-prone skin that stings, flushes or feels hot.
• Suits: people told they cannot have laser, HIFU or RF because their skin is too sensitive.
• Suits: dehydrated skin and fine, crepey lines, and skin recovering from over-exfoliation.
• Suits: rosacea-prone or breakout-prone skin as an add-on, alongside whatever your doctor has prescribed.
• For sagging and jowls, focused ultrasound or HIFU fits better.
• Melasma, deep pigment and visible thread veins need a doctor's assessment instead.
• See a doctor first for acne-like bumps from rosacea, persistent redness, or a rash that is spreading or weeping.
• Tell your Aesthetic Therapist if you are pregnant or have any medical condition or implant, so suitability can be checked.

Sensitised skin · Facial redness and rosacea

What a SKINLDM session is like at SkinRev Lab

A SKINLDM session takes about 30 minutes, including a basic facial: cleanse and preparation alongside the LDM treatment. Most clients describe it as a warm, relaxing facial massage. There are no needles, no light energy and nothing designed to peel the skin.

Because it does not rely on heat, it can be done while skin is actively red or irritated, which is when many other treatments have to wait. Most clients go straight back to work or plans, and make-up can go on afterwards. Skin often feels more hydrated after a session; calmer, steadier skin builds across a course.

Sessions are performed by our Aesthetic Therapists at SkinRev Lab, #B1-28 CityLink Mall, 1 Raffles Link, in the underground link between City Hall and Esplanade MRT. We are open daily, 11am to 8pm. Bring a list of the skincare you use.

Is LDM safe, and are there side effects?

In the published studies, LDM was well tolerated and no serious side effects were reported. That fits how it works: there is no needle, no deliberate heat injury and nothing designed to break or peel the skin. The trade-off is that its effects are gentle and build gradually.

Ultrasound is not absorbed by skin pigment the way laser light is, so skin tone is not the limiting factor it can be with some lasers. That makes LDM a reasonable option for medium and darker skin that pigments easily after irritation.

Safety still depends on the right person in the chair. Open wounds, active infection, a spreading rash or skin that might be something more serious should be seen by a doctor first. Your Aesthetic Therapist asks about your medical history, medication and recent treatments at your assessment, and will tell you if SKINLDM is not the right choice.

How often, and what LDM costs

SKINLDM is S$288 per session before GST, including the basic facial.

Reactive skin responds to consistency rather than intensity, so a course is usually more useful than a single visit. For reference only, the 2021 rosacea and acne study used one session a week for four weeks. That was a study protocol, not a promise: your Aesthetic Therapist suggests a realistic rhythm at your assessment, and individual results vary.

Keep your home routine simple during a course. Gentle cleansing, a plain moisturiser and daily sunscreen let you see what the sessions are doing, rather than guessing whether a new serum helped or hurt.

SkinRev Lab price list

Combining LDM with other treatments

LDM often fits as the calming step in a wider plan. If congestion is your main concern but your skin reddens easily, calming it first with SKINLDM and leaving extraction for later is usually the sensible order.

For glass skin goals, LDM can sit alongside a HydraFacial or a Rejuran PDRN Facial on separate visits. For persistent redness, visible vessels or rosacea bumps, medical treatment comes first: Dr Sin Yong at SkinRev Lab or IN Eternity Clinic assesses for prescription care or laser, and LDM can then help keep the skin comfortable between reviews.

Redness facial: what calms red skin · HydraFacial Syndeo · Laser Toning at SkinRev Lab or IN Eternity Clinic

Sources

1. Kim YJ, et al. The efficacy and safety of dual-frequency ultrasound for improving skin hydration and erythema in patients with rosacea and acne. J Clin Med. 2021;10(4):834.
2. Chervinskaya IG, Gaidash NV, Kruglikov IL. A retrospective pragmatic two-center clinical study to evaluate the clinical outcome of triple-frequency ultrasound in the treatment of mild-to-severe acne vulgaris. J Cosmet Dermatol. 2025;24(2):e16672.
3. Ahn TH, et al. Application of dual-frequency ultrasound for reduction of perilesional edema and ecchymosis after rhinoseptoplasty. J Cosmet Dermatol. 2024.
4. Sontag W, Kruglikov IL. Expression of heat shock proteins after ultrasound exposure in HL-60 cells. Ultrasound Med Biol. 2009.
5. Contini M, et al. A systematic review of the efficacy of microfocused ultrasound for facial skin tightening. Int J Environ Res Public Health. 2023;20(2):1522.