Dr Sin Yong · MBBS (NUS) · MRCS (Edin) · MSc Aesthetic Medicine (London) · MSc Practical Dermatology (Cardiff) · International KOL
The Bliss Lift is Dr Sin Yong’s thread lift protocol in Singapore: absorbable PDO and PCL cog threads placed in the subcutaneous plane to reposition descended tissue of the jowl, midface and brow — under local anaesthetic, with no incision and no general anaesthesia.
Most people arrive at a thread lift with the same two questions: will it actually lift, and what happens when the threads go. Both are fair, and both are answered by mechanism rather than by promise. The Bliss Lift is Dr Sin Yong’s thread lift protocol: absorbable PDO (polydioxanone) and PCL (polycaprolactone) threads placed in the subcutaneous fat, above the SMAS, to carry descended tissue back toward a fixed anchor point.
A barbed thread engages the tissue it passes through. Draw it toward its anchor and the tissue moves with it; that is the lift, and it is mechanical. As the polymer hydrolyses, a track of new collagen is laid down along its path. A thread does not heat tissue, add volume or remove skin, which is why it is chosen for some presentations and not for others.
This page covers the Bliss Lift itself: the materials, mono versus cog threads, the plane they sit in, what assessment involves, recovery and risks, and where a different mechanism is needed. For a broader survey of how thread lifting is practised, read our guide to thread lifts in Singapore. Whether threads suit your face is decided at consultation, not from a photograph.
Polydioxanone is the polymer used in absorbable surgical sutures. It is firm with limited stretch, and of the three it hydrolyses earliest, so its mechanical hold tapers first while the collagen track it leaves remains. PDO is available as mono and cog threads across a range of gauges, and it is the material used for most jowl and midface vectors in the Bliss Lift.
Polycaprolactone is a more flexible polymer that hydrolyses more slowly than PDO or PLLA, so its mechanical support tapers on the longest curve of the three. It is chosen where the plan calls for sustained structural support, where tissue is heavier, or where a previous PDO lift has resorbed and the same vectors are being re-laid.
Poly-L-lactic acid sits between PDO and PCL in its hydrolysis profile and belongs to the same polymer family used in injectable collagen biostimulators. It is used less often in the Bliss Lift than PDO or PCL, but it is available where a particular zone calls for its handling characteristics. Material is chosen per vector, not per face.
A mono thread is smooth. It has no barbs, carries no vector, and is placed to leave a line of collagen along its track: support for the surface, not a lift. A cog thread has barbs cut or moulded along its length in one or two directions. Once in the subcutaneous plane the barbs engage fat and fibrous septae, and tension applied toward the anchor point carries that tissue with it. Every lift described on this page is a cog-thread lift. Mono threads are placed for a different purpose and are sometimes combined.
The plane matters more than the brand. Lifting threads sit in the subcutaneous fat: beneath the dermis, so they are not seen or felt, and above the SMAS, so they stay superficial to the branches of the facial nerve and the parotid duct that run beneath it. Threads are introduced through a 19–21 G blunt cannula or sharp needle, depending on the thread, from an entry point near the anchor. The SMAS itself is not moved. Moving the SMAS is a surgical manoeuvre, and it is the line between a thread lift and a facelift.
“A thread repositions; it does not tighten skin. Laxity needs energy, not string.”
— Dr Sin Yong
Cog threads run from an anchor in front of the ear along vectors that cross the jowl, carrying the descended fat pad back toward the jawline. This is the zone requested most often, and the one where a mobile fat pad and a firm bony margin give a mechanical lift the most to work with. Where the jowl sits on established skin excess, threads are not the answer; see jowls and lower-face sagging for how that is assessed.
Vectors from a temporal anchor run obliquely across the cheek to engage the descended malar fat pad. Repositioning it restores the curve of the cheek and takes some of the weight off the nasolabial fold. Where the fold is driven by volume loss rather than descent, threads alone do not resolve it, and filler is assessed separately.
Short cog threads placed from within the hairline elevate the lateral tail of the brow. This suits a brow that has descended with the skin above it still reasonably elastic. A heavy brow with true excess of upper-lid skin is a different problem and is assessed toward a different mechanism.
Threads across the submental region address early blunting of the neck-jaw angle where the tissue is mobile and the platysma is not the driver. Platysmal banding, a full submental fat pad or established skin excess in the neck are not thread problems, and are directed toward a different mechanism.
A thread does not tighten skin, does not remove skin, does not add volume and does not change skin quality, pore size or pigmentation. It repositions tissue, and as the polymer resorbs that mechanical hold tapers while the collagen along its track remains. Facial ageing continues regardless of what is inserted. Where the presentation is skin laxity rather than descent, or where the descent is extensive, a different mechanism is discussed — see sagging face treatment in Singapore for how the options are separated.
Threads suit a face where the problem is descent of a mobile fat pad — an early jowl, a midface that has slid, a lateral brow that has dropped — with skin that still has elasticity and no large volume deficit. That combination is common from the late thirties onward, but the deciding factor is tissue, not age.
Threads suit less well where skin is very thin, because a cog can show or dimple; where laxity is established, because the excess simply redistributes; where the face is heavy with subcutaneous fat, because a thread carrying a heavy pad under tension tends to cut through it; and where volume loss rather than descent is producing the fold. Active skin infection along the planned vectors, a bleeding tendency, keloid history and previous permanent implants in the plane are assessed individually.
Some faces are wrong for threads and right for something else. That distinction is made at consultation, and it is made before anything is planned.
Dr Sin Yong examines the face upright and in animation, not lying flat, because descended tissue settles differently under gravity. He checks skin thickness and elasticity by pinch and recoil, identifies which fat pads have moved and which have deflated, and looks for the findings that rule threads out: very thin skin, heavy subcutaneous fat, established skin excess. History covers bleeding tendency, previous filler or implants in the plane, and keloid tendency.
With you seated, the anchor points and vectors are drawn on the skin: the direction each thread will run, from where, and how many. Thread material, mono or cog, and gauge are chosen per vector. This map is the plan. The number of threads is only known at this point, which is why cost is set out here and not before.
Entry points are numbed with topical anaesthetic and local anaesthetic is infiltrated along each vector. A 19–21 G blunt cannula or sharp needle carries the thread into the subcutaneous plane along the drawn line, the cannula is withdrawn, and tension is applied toward the anchor so the barbs engage. The thread end is trimmed flush beneath the skin so nothing protrudes.
Threads are often staged with an energy-based treatment when the presentation includes skin laxity as well as descent, or with filler where a deflated fat pad is contributing to the fold. What is combined, and in which order, is decided at consultation rather than added on the day.
Recovery varies. Swelling, bruising at the entry points, tenderness along the vectors and a sensation of tightness or pulling when you open your mouth wide are normal in the early period. Small dimples or puckers where a cog has engaged the tissue usually settle as the swelling resolves; a persistent one can be released. You are asked to avoid wide mouth opening, facial massage, dental work and sleeping face-down early on, and to keep the entry points clean.
What warrants review: pain that increases rather than settles, spreading redness or warmth, a thread end that shows through the skin or can be felt as a hard line, a dimple that does not settle, or an asymmetry that persists once the swelling has gone.
Bruising, swelling, tenderness, temporary dimpling at cog engagement points, and a pulling sensation along each vector. These relate to the traction the thread is applying and to the passage of the cannula.
A thread that is palpable or shows under thin skin, extrusion of a thread end at the entry point, infection, asymmetry, migration of a thread from its planned line, and a lift that is less than planned where the tissue was heavier than the thread could hold.
Injury to a branch of the facial nerve or to the parotid duct, salivary fistula, and granuloma around a thread. These relate to placement deeper than the subcutaneous plane, and they are the reason that plane is respected. A thread cannot be dissolved on demand; an intact thread can sometimes be removed physically in the early period.
A thread repositions. It does not heat tissue or remove skin. Where the presentation is laxity rather than descent, one of these mechanisms is discussed instead of, or alongside, threads. Each does a different thing to a different layer on a different timeline.
HIFU and Ultherapy deliver focused ultrasound to fixed depths — approximately 4.5 mm to reach the SMAS and 3.0 mm for the deep dermis — creating discrete thermal coagulation points. The tissue response is a contraction and collagen remodelling that develops after treatment; nothing is repositioned on the day. It addresses laxity in the layer a thread does not reach.
Monopolar radiofrequency at 6.78 MHz heats the dermis and subcutaneous layer volumetrically rather than at discrete points. In the VF Lift, Dr Sin Yong pairs Volnewmer with the micro-pulsed focused ultrasound of the Ultraformer MPT so that the dermis and the SMAS are addressed in one protocol. Again the response is collagen contraction over time, and again nothing is inserted.
Surgery is the third mechanism. A surgical facelift repositions the SMAS itself and excises skin, which no thread or energy device does. Where skin excess is established, that is the honest answer, and it is given at consultation.
Cost is set out at consultation, once the vectors have been mapped and the thread count is known. The factors are the number of zones treated (jowl, midface, brow, neck); the thread material and gauge; how many cog threads each vector needs and whether mono threads are added; whether an energy-based treatment or filler is staged alongside; and whether the plan is delivered in one visit or staged. No figure is quoted from a photograph, because the thread count cannot be.
Beyond facial threads, a nose thread lift in Singapore places PDO threads along the nasal dorsum for definition rather than lift. It is a separate procedure with its own anatomy and its own assessment.
“I'm a designated trainer for a thread system — and I'd still tell you threads are wrong for plenty of faces.”Dr Sin Yong
A Thread-Lift Trainer on What Threads Can't Do
Threads, focused ultrasound, radiofrequency or surgery — the right protocol is the one matched to your anatomy, to descent versus laxity, and to your goals. Consultations by appointment.
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