Key facts
- Sofwave
- Synchronous parallel ultrasound beams heating the mid-dermis at about 1.5 mm, with surface cooling; not offered here
- HIFU
- Focused ultrasound converging to points of roughly 60–70 °C at 1.5, 3.0 or 4.5 mm; Ultraformer MPT and Ultherapy Prime used here
- Monopolar RF
- 6.78 MHz current heating the dermis and fibrous septae in bulk; Volnewmer behind the VF Lift – Vertical Facelift, and Thermage FLX
- Layer reached
- Sofwave: dermis only. HIFU: dermis to SMAS. Monopolar RF: dermis and subdermal fibrous network
- None of them
- Adds volume, removes fat or skin excess, or replaces a surgical facelift
- Decided by
- Which layer the examination finds at fault, assessed by Dr Sin Yong
What is the difference between Sofwave, HIFU and monopolar radiofrequency?
The difference is the shape of the heat. Sofwave sends several parallel ultrasound beams side by side into the skin without focusing them, so a band of tissue in the mid-dermis is heated to coagulation at a fixed shallow depth while the surface is cooled. HIFU converges ultrasound to a point, so a tiny zone at a chosen depth reaches coagulation temperature and the tissue between the surface and the focus is largely spared. Monopolar radiofrequency passes an electrical field through tissue, and resistance generates heat throughout the volume under the tip.
All three aim at the same endpoint, controlled thermal injury followed by collagen contraction and remodelling, which is why they are sold as rivals. They are not interchangeable, because the layer they condition is different. Sofwave is directed at the dermis alone; HIFU can reach the SMAS at 4.5 mm; monopolar radiofrequency conditions the dermis and the fibrous septae beneath it in bulk. Dr Sin Yong performs HIFU and monopolar radiofrequency; Sofwave is described here as a device other clinics offer.
Which layer does each energy reach, and why does that matter?
Early laxity is not one problem. Fine crepiness and a loss of firmness across the cheek live in the dermis; a softening jawline or early jowl involves the SMAS and the ligaments that suspend it; a face that reads tired and heavy may be a combination with a volume deficit underneath. A device that heats only the dermis cannot act on the SMAS, and one that places points in the SMAS does little for diffuse surface quality unless shallow cartridges are added.
Sofwave's parallel beams are engineered to stop at the mid-dermis, which is the reason it is positioned for dermal firming and fine lines and the reason it is not a SMAS treatment. HIFU on the Ultraformer MPT uses 1.5 and 2.0 mm cartridges for the dermis and 4.5 mm for the SMAS, so one treatment can be mapped across layers. The VF Lift – Vertical Facelift runs on Volnewmer monopolar radiofrequency at 6.78 MHz and heats the dermis and subdermal fibrous network along vertical vectors, zone by zone, without focused ultrasound; the comparison of Thermage, HIFU and Volnewmer sets the radiofrequency platforms beside each other.
“HIFU or radiofrequency is the wrong question. They do not do the same job.”
Dr Sin YongOn the commonest comparison request
How do the three differ in comfort, recovery and reversibility?
Comfort tracks depth and pattern. Points placed at the SMAS are felt as a brief deep ache along each line, most over bone; bulk radiofrequency is felt as building warmth that the operator paces to the patient's report; shallow parallel beams are felt as surface heat with cooling in between. Tolerance varies widely, and analgesia is discussed at consultation on any platform.
Recovery after all three is usually redness, warmth and tenderness that settle, with occasional swelling, a bruise or a patch of altered sensation that is reviewed. None leaves anything in the tissue, so none is reversed; the change develops as collagen remodels over weeks and months, and a different mechanism can be used at a later visit if the face has changed. The risks that settings decide are surface burns from poor coupling, nerve irritation where heat reaches a branch, and fat loss where energy is placed into a thin face, which is a reason for caution with every heating device.
Sofwave, HIFU and monopolar radiofrequency compared for early laxity| Feature | Sofwave | HIFU | Monopolar RF (Volnewmer, Thermage) |
|---|
| Energy and pattern | Parallel, non-focused ultrasound beams with surface cooling | Focused ultrasound converging to discrete points | 6.78 MHz electrical field heating a volume of tissue |
| Depth and layer | Mid-dermis at about 1.5 mm | 1.5, 2.0, 3.0 and 4.5 mm; dermis to SMAS | Dermis and subdermal fibrous septae; not the SMAS |
| Tends to suit | Dermal firmness and fine lines with good deeper support | SMAS laxity in a face that has kept its volume | Laxity with fullness, or a slim face where tightening alone would hollow |
| Felt as | Surface heat between cooling | Deep ache along SMAS lines, most over bone | Building warmth paced to the patient's report |
| Leaves in tissue | Nothing; change develops as collagen remodels | Nothing; change develops as collagen remodels | Nothing; change develops as collagen remodels |
| Here | Not offered here; described as a name people compare | Ultraformer MPT and Ultherapy Prime, performed by Dr Sin Yong | VF Lift – Vertical Facelift on Volnewmer; Thermage FLX |
Who suits which approach, and who should wait?
Dermal-only heating suits skin that has lost firmness while the deeper support is still good; focused ultrasound suits laxity where the SMAS has loosened in a face that has kept its volume; bulk radiofrequency suits laxity that coexists with fullness or with a slim face where tightening alone would read as hollowing, which is the case the VF Lift was built for. The Thermage FLX page describes the other monopolar radiofrequency platform used here and who it tends to suit.
All three are deferred in pregnancy and with active infection or inflammatory acne in the field, and radiofrequency is avoided with pacemakers or implanted electronic devices. A heavy lower face with a great deal of redundant skin is beyond what any of them contracts, and that is said plainly and referred to a plastic surgery specialist. The comparison of Ultherapy, VF Lift and Time Freeze adds Dr Sin Yong's laser lifting protocol for faces where more than one layer needs attention.
How should the choice be made, and what sets the fee?
By examination, not by name. Dr Sin Yong examines the face at rest and in animation, palpates skin and fat thickness over each zone, and maps where the dermis is tired against where the SMAS is lax and where volume is missing. That map decides whether shallow dermal work, focused points at depth, bulk radiofrequency along vectors, or a sequence of them is planned. Someone who arrives asking for a device has chosen a tool before the problem has been named.
The fee follows the plan: the zones treated, the depths and cartridges or passes, whether more than one energy is combined, and whether treatment is staged. Singapore's advertising rules prevent fees being published, and a written itemised quote follows the consultation; how fees are quoted explains what it contains.
