Published 20 October 2026 · Reviewed by Dr Sin Yong
Injectables in Singapore are five different things sold under one word: dermal fillers that restore volume, botulinum toxin that quietens muscle, collagen biostimulators that prompt the skin to build its own support, skin boosters aimed at skin quality, and prescription injections with a narrow job such as fat dissolving. This page gathers every guide on the subject, grouped by what is injected and what it is for.
Short answerStart with the problem rather than the product. Lines that appear on movement point to botulinum toxin; a contour or a hollow points to a filler; a face that has thinned all over, with good skin, points to a biostimulator; skin that is crepey, dull or dehydrated points to Profhilo, Rejuran or another booster. The decision block below sorts these, and every page in the cluster is listed after it. Every injection here is performed by Dr Sin Yong after an in-person assessment.
Dermal fillers (HA, CaHA, PCL), botulinum toxin, collagen biostimulators (PLLA, PCL, CaHA, PDLLA), skin boosters (HA, polynucleotide) and prescription fat-dissolving injections (deoxycholic acid) each act on a different layer or problem
Reversibility
Hyaluronic acid filler can be dissolved with hyaluronidase; biostimulators cannot, which is why their placement and dose are decided more conservatively
Assessment first
Ultrasound mapping distinguishes fat from filler before any correction work, and the layer that has changed decides whether an injectable is the answer at all
Technique facts on this site
Profhilo by a modified BAP pattern; nose filler with CaHA or PCL placed by fine needle on the bone; bone-support areas usually CaHA or PCL
Not confirmed as offered
Fat dissolving, micro-toxin, shoulder and calf slimming injections are written up as explainers; availability is confirmed at consultation
Doctor-led
Every injection is performed by Dr Sin Yong, an aesthetic physician, with no treatment delegated; WhatsApp enquiries are answered in English and Chinese
These guides are for three kinds of reader. The first has a specific wish, a sharper chin, a higher nose bridge, fuller lips, a softer frown, and wants to know which product does that, what it cannot do, and what the risks are. The second has noticed that their whole face looks thinner, tired or crepey rather than any one feature being wrong, and is trying to work out whether the answer is volume, collagen or skin quality, because those are three different injections. The third has already had injectables, here or abroad, and something is not right: a lump, a heaviness, a blue tint under the eye, a face that looks fuller than it should.
Illustrative image — not a patient.
Injectables are prescription medicines or registered medical devices, and in Singapore they are used under HSA registration and MOH licensing by a doctor. They are deferred in pregnancy and usually while breastfeeding, over active infection or inflamed acne at the site, and in anyone with an unmanaged bleeding tendency; biostimulators are avoided in keloid-prone skin and, on this site, under the eye. A consultation can end with advice to wait, to treat a different layer first with a lift or a laser, or to do nothing. The method page explains the order things are done in: treat the layer that changed, reposition before filling, stage the plan.
What the guides have in common is that each says what the product is, who it suits and does not, how it is done here, what decides the plan, and what recovery looks like, without session counts, figures or outcome promises. Fees are quoted in writing after assessment, as the how we quote page sets out, and WhatsApp enquiries are answered in English and Chinese.
Start here: which injectable for which problem
The table sorts the common reasons people ask about injectables into the class that usually answers them, with the limit of each class and the page to read. It is a reading guide, not a prescription; the layer that has actually changed is confirmed in person, often with ultrasound, before anything is planned.
What you notice
Usual class
What it cannot do
Read
Frown, forehead or crow's feet lines that appear when you move
Volume or position. A fold that has deepened because the cheek above it has dropped is not a filler problem but a lifting one; filling it adds weight to a face that needs repositioning. The thread lift vs fillers page sets this out, and the sagging face guide covers the lifting routes.
Movement or rest. A line that appears only when you frown is muscle, and botulinum toxin is the tool; a line present at rest is skin or volume, and toxin alone will not remove it. The toxin vs fillers comparison has a table by concern.
“I do not choose a product and then look for somewhere to put it. I find the layer that changed, and if that layer does not want an injection, I say so.”
Dr Sin YongOn injectables
Every injectable guide on this site
Dermal fillers
Dermal fillers in Singapore: HA, CaHA, PCL and PLLA compared by material, what each does, which can be dissolved, and the risks
Botulinum toxin in Singapore: how wrinkle injections relax the muscles behind frown, forehead and crow's feet lines, the areas and how dosing is thought about
Shoulder slimming injections: trapezius bulk versus posture, written as an explainer; availability is confirmed at consultation
Calf slimming injections: gastrocnemius bulk versus fat, and the tiptoe test; availability is confirmed at consultation
Micro-toxin skin injections: dilute intradermal toxin for oil, pores and fine lines, written as an explainer; availability is confirmed at consultation
1. MessageWhatsApp +65 8023 7170 with what is bothering you. A reply comes from the clinic, not a bot.
2. AssessmentDr Sin Yong examines you himself on Orchard Road, with ultrasound where earlier filler is involved.
3. A plan in writingWhat he would do, what he would not, the fee factors, and the option of no treatment.
Every treatment is performed by Dr Sin Yong personally. Singapore Medical Council registered · invited to share his clinical expertise internationally for CLASSYS, DEKA, Fotona, Hironic and Ilooda.
Book an assessment with Dr Sin Yong on Orchard Road; the layer that has changed is examined, with ultrasound where it matters, before any injectable is discussed. How consultations work.
The page for the problem, not the product. If a line shows only when you move, read the botulinum toxin page; if a feature is flat or hollow, read the dermal fillers page and then the area guide; if the whole face has thinned, read the collagen biostimulators page; if the skin itself is dull or crepey, read Profhilo or the skin booster comparison. The table on this page sorts the common cases.
A filler occupies space as soon as it is placed, which is why it is used to shape a chin or a nose bridge. A biostimulator such as Sculptra or Ellansé prompts the skin to build its own collagen over time, so the change is gradual and cannot be dissolved. A skin booster such as Profhilo or Rejuran is aimed at the quality of the skin, hydration, texture and fine lines, without adding volume or lifting.
Only hyaluronic acid can be dissolved, with hyaluronidase, and on this site that is done under ultrasound guidance so the enzyme goes where the filler sits. Biostimulators, CaHA, PCL and PLLA have no dissolving enzyme and are remodelled instead, which is what the Time Freeze Laser LCLR® is used for. Botulinum toxin is not reversed; its effect wears off as the muscle recovers. This is why reversibility is weighed before the product is chosen.
The fat dissolving page is written as an explainer: what deoxycholic acid does, who the approved use suits, and what it cannot do, which is tighten skin or move a gland. Whether it is offered is confirmed at consultation, where the pocket under the chin is examined and the alternatives on this site, including cold and energy-based options, are set out against it.
References
Consensus Recommendations for Combined Aesthetic Interventions in the Face Using Botulinum Toxin, Fillers, and Energy-Based Devices. Dermatologic Surgery, 2016. source
Global Aesthetics Consensus: Avoidance and Management of Complications from Hyaluronic Acid Fillers — Evidence- and Opinion-Based Review and Consensus Recommendations. Plastic and Reconstructive Surgery 137(6), 2016. source
Spontaneous and induced degradation of dermal fillers: A review. Journal of Cutaneous and Aesthetic Surgery 17(4) (Wollina U, Goldman A), 2024. source
About this page: written and medically reviewed by Dr Sin Yong, MBBS (NUS), MRCS (Edinburgh) · Last reviewed 20 October 2026 · Illustrative images only, not patients · Editorial policy
