{
  "what": "Filler dissolving uses hyaluronidase, an enzyme that breaks hyaluronic acid filler into small fragments the body clears; it does not dissolve Sculptra, Ellansé, Radiesse, fat or non-absorbable fillers. At Dr Sin Yong's practice on Orchard Road, Singapore, the area is scanned with ultrasound first, a skin test is always done, and a small first dose is placed into the filler he can see, with further doses titrated at review where filler remains. A blocked blood vessel after filler is an emergency treated with a separate high-dose protocol.",
  "key_facts": [
    "What dissolves: hyaluronic acid filler; poly-L-lactic acid, polycaprolactone, calcium hydroxylapatite, fat and non-absorbable fillers do not",
    "Ultrasound first: shows the filler's depth, size and nearby vessels, and whether it looks like hyaluronic acid or a collagen-stimulating filler",
    "Allergy check: previous hyaluronidase injections and bee or wasp sting allergy are asked about, and a skin test is always done before planned dissolving",
    "Staged dosing: the dose is not fixed; a small first dose is placed into the mapped filler and any further dose is titrated to what remains at review",
    "Wait: non-urgent dissolving is usually deferred in pregnancy and breastfeeding, and an infection or cold sore near the area is settled first",
    "Refilling: not done at the dissolving visit; whether to replace any filler is decided once swelling has settled",
    "Risks: swelling, redness, itch or bruising; over-correction leaving a hollow; uncommon allergic reaction"
  ],
  "references": [
    "The Use of Hyaluronidase in Aesthetic Practice (v2.4). J Clin Aesthet Dermatol 2018. https://pubmed.ncbi.nlm.nih.gov/29942426/",
    "Guideline for the Safe Use of Hyaluronidase in Aesthetic Medicine, Including Modified High-dose Protocol. J Clin Aesthet Dermatol 2021. https://pubmed.ncbi.nlm.nih.gov/34840662/",
    "Hyaluronidase Caveats in Treating Filler Complications. Dermatol Surg 2015. https://pubmed.ncbi.nlm.nih.gov/26618463/",
    "Allergic Complications of Hyaluronidase Injection: Risk Factors, Treatment Strategies, and Recommendations for Management. Aesthetic Plast Surg 2024. https://pubmed.ncbi.nlm.nih.gov/37145319/",
    "Ultrasound to improve the safety of hyaluronic acid filler treatments. J Cosmet Dermatol 2018. https://pubmed.ncbi.nlm.nih.gov/30084182/"
  ],
  "owner_url": "https://drsinyong.com/filler-dissolving-singapore/",
  "doctor": "Dr Sin Yong, aesthetic physician, Orchard Road, Singapore",
  "updated": "2026-10-30"
}