LDM (local dynamic micro-massage): what the term means
Medically reviewed by Dr Sin Yong · Last reviewed · 3 min read
Published 13 October 2026 · Reviewed by Dr Sin Yong
LDM (local dynamic micro-massage) is a non-thermal, dual-frequency therapeutic ultrasound method in which two megahertz frequencies, typically 3 MHz and 10 MHz with a 1 MHz option on some handpieces, alternate rapidly to create a micro-massage within the dermis rather than sustained heat. LDM is used for dehydrated, sensitive or reactive skin and for recovery after laser or injectable treatment. It does not lift or tighten the face as HIFU does.
Alternating 3 MHz and 10 MHz; 1 MHz option on some handpieces
For
Dehydrated, sensitive or reactive skin; recovery after lasers and injectables
Not
Lifting or tightening; LDM is a maintenance and support treatment, not a corrective one
Illustrative image, not a patient.
Where LDM matters on this site
LDM is the supporting treatment in Dr Sin Yong's practice, so it is referred to on the pages about reactive skin and on the pages about recovering from the corrective treatments.
Three things on this site are called ultrasound: the one I look with, the one that heats to lift, and LDM, which does neither.— Dr Sin Yong
LDM ultrasound facial: the full page, with the three phases of a session and who it is for.
Sensitive skin treatment: where LDM sits among the gentler options for skin that tolerates heat poorly.
Rosacea and facial redness: the diagnosis that is made before any facial is offered, and where LDM is an adjunct rather than the treatment.
Dry skin treatment: dehydration and barrier compromise, the main non-recovery indication.
R2 Glow: one of the lasers after which LDM can be used to help the skin settle.
What HIFU cannot do: useful reading because LDM is the ultrasound HIFU is confused with, and the limits run the other way too.
If you arrived here looking for lifting, the HIFU Singapore page is the one you want; LDM does not lift.
Not to be confused with
Three different things on this site are called ultrasound, and LDM is the gentlest of them. The confusion is almost always with the other two.
HIFU and Ultherapy: focused ultrasound that converges energy to heat small points at set depths for lifting. LDM keeps the tissue cool and works by mechanical agitation; it does not lift.
Diagnostic ultrasound: the imaging Dr Sin Yong uses to map fat, filler and tissue before correction work. It looks; it does not treat.
Ultraformer MPT: a focused ultrasound lifting device, again in the HIFU class.
Skin boosters: injected hydration. LDM is applied to the surface with gel; nothing is injected.
Hydrafacial: a cleansing and infusion facial. It shares the word facial with LDM and nothing else; LDM is physician-level because the assessment decides whether redness is rosacea or something needing its own diagnosis.
A useful test: if a treatment promises to lift or tighten, it is not LDM.
What decides whether LDM matters for you
LDM is chosen by the state of the skin barrier and by what else is in the plan, not by a concern on its own. Dr Sin Yong looks at these points.
Dehydrated, sensitive or reactive skin that reacts to heat-based treatments is the main indication.
Persistent redness is assessed as a diagnosis first; if it is rosacea, medical treatment is discussed and LDM is at most an adjunct.
Skin recovering after a laser, peel or injectable treatment is the other indication, where it is used to help the skin settle.
Lifting, tightening, scar revision or pigment clearance are not what it does; those needs go to the corrective protocols.
A known reaction to coupling gels or serums, or a flare of eczema, is declared, because the gel and any serum applied afterwards are the usual causes of a reaction.
On its own LDM is a maintenance and support treatment rather than a corrective one, which is why it is offered as part of a plan and reviewed with the rest of it.
Where it fits
LDM is the gentlest ultrasound on this site and the one most often confused with the most aggressive. The LDM facial page explains the three phases of a session, who benefits and why it is done at physician level: in Dr Sin Yong's clinic it is an adjunct for reactive skin and a recovery step after lasers, not a stand-alone correction. The contrast is with HIFU, which converges ultrasound at set depths to heat small points to roughly 60 to 70 °C for lifting; LDM keeps the tissue cool and works by mechanical agitation. The two share a physics textbook and nothing else. The lifting class is defined under HIFU.
Related on this site
LDM is a device treatment; bojin massage is a manual technique, and the two are compared separately.
Frequently Asked Questions
It can be part of the plan, as an adjunct. Dr Sin Yong first assesses whether the redness is rosacea or another condition, because rosacea has its own medical management that LDM does not replace. The non-thermal mechanism is the reason it is considered for reactive skin at all; a flare of rosacea or eczema after a session is reported the same day.
No. LDM alternates two megahertz frequencies to micro-massage the dermis without heating it, which is the opposite of how HIFU and radiofrequency work. It is directed at hydration, barrier support and recovery. Lifting and tightening on this site are the VF Lift – Vertical Facelift and HIFU, chosen after their own assessment.
No. HIFU focuses ultrasound to heat small points at set depths for lifting. LDM alternates two megahertz frequencies to micro-massage the dermis without heating it, for hydration, barrier support and recovery. It does not lift.
For dehydrated, sensitive or reactive skin, and in the days after laser or injectable treatment to help the skin settle. On its own it is a maintenance treatment rather than a corrective one.
