The Doctor Other Doctors Train With
International KOL & trainer for 14+ device brandsTrained 500+ doctors across AsiaMBBS (NUS) · MRCS (Edinburgh) · Dual UK Masters with DistinctionEvery treatment personally performed — never delegated
Dr Sin Yong · MBBS (NUS) · MRCS (Edin) · MSc Aesthetic Medicine (London) · MSc Practical Dermatology (Cardiff) · International KOL
Overfilled, puffed-up or unnatural-looking filler results — often called 'pillow face' — can be reversed and refined. Dr Sin Yong uses ultrasound-guided hyaluronidase to dissolve excess or misplaced hyaluronic acid filler, locating each deposit under real-time imaging before treatment, then guides patients through a carefully considered restoration of natural facial proportions.
Pillow face occurs when filler has been over-placed — either too much volume in total, placement in the wrong anatomical planes, or filler in locations that create an unnatural appearance. Cheeks that look artificially protruberant, lateral cheek bulging, loss of natural skeletal definition, and an overall 'puffy' look are characteristic. This can result from a single over-treated session or from accumulation of filler over multiple sessions without allowing previous product to metabolise.
The first step in addressing pillow face is dissolution of the excess or misplaced HA filler using hyaluronidase enzyme. Dr Sin Yong maps the distribution of filler using clinical examination together with ultrasound imaging, then dissolves selectively — targeting the areas contributing most to the unnatural appearance while preserving areas where volume is appropriate. This ultrasound-guided filler dissolving approach allows hyaluronidase to be placed into the filler deposit itself, rather than the surrounding tissue. After dissolution and a period of healing, natural proportions are reassessed and refinement filler can be placed if desired.
“More filler cannot fix a face that already has too much filler.”
— Dr Sin Yong
Not every unnatural result needs more filler to correct it. When a face looks overfilled, the instinct at some clinics is to add further volume to balance or lift — but adding product to an already over-volumised face often deepens the very problem a patient came in to resolve.
Dr Sin Yong's approach to pillow face is the opposite: identify what is excessive, and let it go down. Where hyaluronic acid filler is the cause, ultrasound-guided hyaluronidase allows the excess to be dissolved selectively, returning the face toward its own natural proportions rather than layering more on top.
Dissolve over-placed cheek filler that creates an overly protruberant, unnatural or 'apple cheek' appearance.
Address filler that has migrated laterally or been placed in the lateral cheek, creating bulging or distortion of the facial oval.
Dissolve overfilled or misplaced under-eye filler that causes puffiness, bluish discolouration or exacerbation of hollowing.
When excess filler obscures the natural bone structure of the cheeks, jaw and temples, dissolution restores the natural skeleton.
Address filler that has accumulated over many sessions across multiple providers, creating an unnatural total volume.
Dissolve filler that has migrated from its original placement site, creating bulging or asymmetry.
When filler has been placed over several sessions or across different providers, its exact location and depth are rarely known. Dr Sin Yong uses ultrasound imaging to see where hyaluronic acid filler sits beneath the skin before any hyaluronidase is placed. Being able to dissolve filler with ultrasound guidance means the enzyme can be directed into the filler deposit itself, while mapping the position of nearby vessels and structures.
For pillow face specifically, this matters because the goal is selective — reducing over-volumised areas while leaving appropriate volume untouched. Dr Sin Yong's approach is to palpate and take a full history first, assess the face in both static and dynamic movement, and mark out the areas of concern — and only then use ultrasound to confirm that particular zone before any hyaluronidase is placed. Ultrasound-guided hyaluronidase supports this selectivity: each deposit is located, assessed for depth, and treated in a targeted way. Where filler cannot be visualised or has broken into very small pockets, Dr Sin Yong discusses the limitations openly at consultation, as complete removal is not always possible in a single round.
Dr Sin Yong begins with a thorough history and clinical palpation, then assesses the face both static and in movement to understand how the filler behaves dynamically. The relevant areas are marked out, and ultrasound imaging is then used to visualise each marked zone — confirming the location and depth of filler beneath the skin. Pre-treatment photography establishes baseline.
A selective dissolution plan identifies areas to dissolve and areas to preserve. Under ultrasound guidance, hyaluronidase is diluted and directed into the mapped filler deposits at target locations.
Hyaluronidase is injected at planned sites. Dissolution occurs over 24–72 hours. Multiple sessions may be needed for heavy filler loads.
At 2–4 weeks, Dr Sin Yong reassesses the natural face after dissolution. If refinement filler is desired, a new placement plan is designed based on natural proportions.
Old filler migrates, layers and holds water. Correcting a pillow face blind risks dissolving the wrong plane or stacking new product on old. Ultrasound mapping shows what sits where — then every unit of hyaluronidase and every step of restoration is placed deliberately.
| More filler (often proposed) | Targeted dissolution | Biostimulators | Energy-based lifting | |
|---|---|---|---|---|
| What it does | Adds volume on top of migrated product | Hyaluronidase removes selected old filler, ultrasound-guided | Gradual collagen rebuilding after clearance | Tightens and repositions without adding volume |
| When it helps | Rarely, in a face already over-volumised | Overfilled, migrated or puffy areas | Restoring structure after dissolution | Laxity unmasked once filler is cleared |
| The watch-out | Deepens the pillow-face look it was sold to fix | Needs mapping — blind dissolving is guesswork | Patience — weeks, not days | Choose by face type — see the honest comparison |
| Where to read more | — | This page | Biostimulators guide | Ultherapy vs Thermage vs VF Lift vs Time Freeze |
The sequence is dissolve first, reassess, then restore with precision — less, not more.
Correction is judgment work. The judgment applied to your face is the one international symposiums put on stage.
Two main paths exist. If existing filler is the problem, targeted dissolving (ultrasound-guided where appropriate) removes it. If the face needs support rather than volume, collagen-stimulating energy protocols such as the VF Lift or Time Freeze Laser lift and firm using your own tissue response — no added product, no risk of compounding the overfilled look.
'Pillow face' describes an over-filled, rounded look that can develop when too much filler is placed over time, blunting natural facial contours. Dr Sin Yong assesses where product has accumulated and plans correction to restore more natural proportions.
Signs can include a puffy or heavy appearance, loss of natural contour, or filler that looks or feels different from the surrounding tissue. Ultrasound assessment helps confirm where and how much product is present before any correction.
Dissolving hyaluronic acid filler with hyaluronidase is a well-established procedure, but it should be done carefully by an experienced doctor, as over- or under-dissolving is possible. Dr Sin Yong uses ultrasound guidance to target only the intended product.
Migrated hyaluronic acid filler can usually be dissolved and, if needed, replaced more precisely; ultrasound helps locate product that isn't obvious on the surface. Non-HA products are assessed separately, as they cannot be dissolved with hyaluronidase.
Hyaluronidase dissolves hyaluronic acid (HA) fillers only. Non-HA fillers (Radiesse, Sculptra, Ellanse, Juvederm Voluma if not HA-based) cannot be dissolved with hyaluronidase. Dr Sin Yong assesses the likely composition of your filler at consultation.
Ultrasound-guided filler dissolving uses high-resolution ultrasound imaging to locate hyaluronic acid filler beneath the skin before hyaluronidase is placed. Seeing the depth and position of each deposit — and of nearby vessels — allows Dr Sin Yong to direct the enzyme into the filler itself and to work selectively, which is particularly useful in pillow face where the aim is to reduce some areas while preserving others.
Filler can be dissolved without imaging, but the injector is then relying on palpation and estimation of where the filler sits. Using ultrasound to dissolve filler adds real-time visualisation of the deposit and surrounding anatomy. Dr Sin Yong uses ultrasound guidance as part of the assessment and dissolution process for pillow face correction.
Mild overfilling may resolve with a single session. Heavy filler loads accumulated over many sessions typically require 2–3 rounds of hyaluronidase, and repeat rounds can be performed 5–14 days apart rather than weeks apart.
You will look like your natural self — which may feel unfamiliar if you have had filler for a long time. Some patients experience a brief period of apparent hollowing before natural tissue rehydrates. Dr Sin Yong prepares you for this at consultation.
Dr Sin Yong recommends waiting at least 1 week after dissolution before placing any new filler. This allows the hyaluronidase to clear and the tissue to settle so that natural proportions can be reassessed before any new product is placed.
Yes. Working with an experienced injector who uses restraint, anatomical knowledge and a philosophy of less-is-more prevents overfilling. Dr Sin Yong's approach emphasises natural results and conservative volume placement.
Ellanse and Sculptra are collagen-stimulating fillers (polycaprolactone and poly-L-lactic acid) and are not dissolved by hyaluronidase, which only reverses hyaluronic acid. Where these have been overfilled or have led to excess collagen stimulation, Dr Sin Yong assesses the affected areas with ultrasound and manages them using techniques appropriate to the material, working to restore more natural, balanced proportions. Because correcting non-HA fillers is more involved than reversing HA, each case is assessed individually at consultation.
Hyaluronic acid filler does degrade over months to years, but migrated or layered product — including lip filler migration and under eye filler migration — can persist far longer than patients expect, holding water and adding bulk. Waiting it out is rarely a plan; targeted dissolving removes the specific deposits that are causing the look.
Patients who have experienced pillow face frequently discover that structural lifting — rather than additional volume — is what their face actually needs. Dr Sin Yong's two proprietary lifting protocols deliver structural rejuvenation that reduces reliance on filler over time.
Pillow face treatment in Singapore involves careful, ultrasound-guided filler dissolving to reduce over-volumised areas and restore natural facial proportions. Dr Sin Yong uses ultrasound imaging to locate hyaluronic acid filler before hyaluronidase is placed, so that filler can be dissolved with ultrasound guidance in a targeted way at his aesthetic practice on Orchard Road — within convenient reach of Somerset, City Hall and the wider Central and town areas of Singapore.
“A real part of my week is dissolving filler someone else put in.”Dr Sin Yong
Why I Spend My Week Dissolving Other Clinics' Filler
Dissolving Filler Is Not an Undo Button
What To Do If You Already Regret Your Filler
Expert filler assessment, reversal and refinement. Restoring natural facial proportions at .
WhatsApp Dr Sin YongRead the full guide: correcting a pillow face — what dissolving involves and when to stage it
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