Medically reviewed by Dr Sin Yong · Last reviewed · 4 min read
Published 13 October 2026 · Reviewed by Dr Sin Yong

This hub lists every page on drsinyong.com about filler that has gone wrong or simply gone too far: pillow face, under-eye lumps, puffiness, nodules after Ellansé or Sculptra, migration and the Tyndall effect. Dr Sin Yong images earlier filler with ultrasound before anything is dissolved or added; hyaluronic acid is treated with ultrasound-guided hyaluronidase, and non-dissolvable material with the Time Freeze Laser LCLR®.
No. Hyaluronidase only dissolves hyaluronic acid. Ellansé, Sculptra, Radiesse, collagen gels and silicone need a different approach; Dr Sin Yong uses the Time Freeze Laser LCLR® for over-stimulated tissue after biostimulators and refers discrete lumps for excision where appropriate.
It helps but is not essential. Ultrasound usually shows whether the material behaves like hyaluronic acid or a collagen stimulator, its depth and whether it is one deposit or several.
King M, Convery C, Davies E. The use of hyaluronidase in aesthetic practice (v2.4). J Clin Aesthet Dermatol. 2018;11(6):E61-E68. PMID 29942426. source
Murray G, Convery C, Walker L, Davies E. Guideline for the safe use of hyaluronidase in aesthetic medicine, including modified high-dose protocol. J Clin Aesthet Dermatol. 2021;14(8):E69-E75. PMID 34840662. source
Master M, Azizeddin A, Master V. Hyaluronic acid filler longevity in the mid-face: a review of 33 magnetic resonance imaging studies. Plast Reconstr Surg Glob Open. 2024;12(7):e5934. doi:10.1097/GOX.0000000000005934. source
Signorini M, Liew S, Sundaram H, et al. Global Aesthetics Consensus: avoidance and management of complications from hyaluronic acid fillers. Plast Reconstr Surg. 2016;137(6):961e-971e. doi:10.1097/PRS.0000000000002184. source
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