12 Mar Dissolving Fillers in Singapore: Hyaluronidase and Risks
Dissolving Fillers with Hyaluronidase: Results, Risks and Recovery
Hyaluronidase is an enzyme that breaks down hyaluronic acid, or HA, which is used in many dermal fillers¹. Doctors use it to reduce unwanted HA filler and manage selected complications, although removing the material does not guarantee reversal of every complication².
An unwanted contour or persistent swelling can make another injection feel like a difficult decision. Before considering filler dissolving, the assessment should establish what is causing the concern and whether removing HA is likely to help².
What hyaluronidase dissolves. Hyaluronidase is used for hyaluronic acid filler, while other filler materials need a different assessment and cannot be dissolved in the same way
What does hyaluronidase dissolve?
Hyaluronidase breaks the chemical bonds within HA chains, allowing the gel to degrade¹. It acts on HA filler rather than every injectable material, so calcium hydroxylapatite, poly L lactic acid and polymethylmethacrylate fillers cannot be dissolved with the same enzyme².
Bring the filler name and treatment records when available, especially when injections were performed elsewhere. The Skin Longevity Clinic’s overview of dermal fillers explains the differences between materials and why identifying the preparation matters.
When filler needs review. Unwanted fullness, asymmetry, persistent swelling and blue grey discolouration are common reasons to seek assessment after filler
Why might someone consider dissolving filler?
Reasons include unwanted fullness, asymmetry, misplaced HA and visible or palpable deposits². Superficial HA can also cause a blue grey appearance, commonly called the Tyndall effect, particularly beneath the eyes².
A painful, red or warm lump requires assessment for infection or inflammation before deciding on treatment³. Management may involve additional medicines or procedures rather than hyaluronidase alone³.
My article on excessive filler and unwanted changes in facial proportions discusses appearance concerns in more detail. Explain the particular feature that bothers you and whether your preference is a smaller adjustment or removal of as much HA as reasonably possible.
Seek urgent help if you notice these symptoms. Worsening pain, pale or dusky skin, mottled colour changes and visual symptoms require urgent medical attention
When is a filler injection an emergency complication?
Increasing pain or skin that becomes unusually pale, dusky or mottled requires immediate medical assessment, because these changes can indicate interrupted blood supply⁴. Significant pain may be absent initially, so a concerning colour change deserves attention even when the area feels relatively comfortable⁴.
Sudden blurred vision, loss of vision or new neurological symptoms after facial filler require emergency care⁵. In Singapore, call 995 for emergency assistance rather than waiting for a routine appointment⁵,⁶.
Hyaluronidase is an important treatment for suspected vascular occlusion involving HA filler⁴. Treatment cannot guarantee recovery of damaged tissue or vision, and urgent care follows a different approach from an elective appointment to adjust appearance⁴,⁵.
Why assessment matters. Lip filler and under eye filler concerns need careful review because placement, swelling and tissue characteristics influence whether dissolving may help
Can lip filler be dissolved?
HA lip filler may be reduced when assessment identifies unwanted volume or a misplaced deposit⁷. The doctor should examine the lip and surrounding area to distinguish a contour concern from swelling, an inflammatory nodule or another complication⁷.
Ultrasound can help locate filler and guide treatment in selected cases, including when the distribution of previous material is difficult to establish⁷. It provides additional information rather than a guarantee that every irregularity will disappear⁷.
Can tear trough filler be dissolved?
Hyaluronidase may be considered for HA related under eye fullness, visible deposits or persistent swelling⁸. Filler can interfere with fluid drainage around the lower eyelid and upper cheek, which helps explain why puffiness sometimes persists beyond the early recovery period⁸.
Removing filler can also remove some of the correction it provided to the original hollow⁸. The assessment should distinguish filler related swelling from eye bags, loose skin and other causes of an under eye concern⁸.
Read The Skin Longevity Clinic’s guide to tear trough filler in Singapore for the treatment’s intended effects and limitations. A review should consider previous cheek injections as well as direct tear trough treatment⁸.
How filler dissolving is done. A typical appointment involves assessment, treatment planning, careful injection of hyaluronidase and review of the response
How are filler dissolving injections performed?
The appointment begins with a treatment history, examination and discussion of the intended change, alternatives and risks³. The skin is cleansed, and measures to reduce injection discomfort may be discussed before proceeding³.
The doctor injects hyaluronidase into the area containing the HA deposit². The amount and placement depend on the material being treated, its location and the reason for dissolving².
Ask which preparation will be used, particularly when its source is relevant to your medical history or personal preferences. Published literature describes both animal sourced and recombinant human hyaluronidase preparations².
After filler dissolving. Recovery can include early swelling or bruising, followed by reassessment as the treated area settles over the next one to two weeks
How quickly does hyaluronidase work?
Hyaluronidase can begin acting promptly, but the visible response depends on the filler’s properties and the enzyme reaching the material¹. The time needed to assess the result also differs from the time taken for the enzyme to act, because the injections can cause swelling⁹.
Guidance for elective dissolving allows reassessment after approximately forty eight hours, while acknowledging that swelling may take longer to subside⁹. Some treatments require further injections, so an immediate change should not be interpreted as proof that all the filler has been removed².
Can only part of the filler be dissolved?
Partial reduction is possible, but the exact amount removed is not completely predictable². Discuss whether the aim is to soften a small irregularity or remove a larger amount, including the possibility of losing some volume you would prefer to retain².
A randomised trial involving nine women found that small doses of hyaluronidase reduced experimentally placed HA deposits more than saline¹⁰. The deposits were placed in the upper arms, so the findings do not establish a precise method for selectively removing a particular amount from the lips or tear troughs¹⁰.
Does hyaluronidase affect natural HA or cause hollowing?
Hyaluronidase can break down naturally occurring HA as well as injected HA filler⁹. Removing filler can also reveal underlying hollowing or skin laxity that the added volume had concealed¹¹.
A 2024 retrospective study examined 157 treated eye regions in 90 patients and recorded adverse appearance changes, including hollowing, after dissolving¹¹. Its design could not establish the cause of every reported change or determine the risk for all patients undergoing hyaluronidase treatment¹¹.
The enzyme’s established action is the breakdown of HA, which is different from demonstrating direct destruction of fat or collagen¹. Equally, that mechanism should not be used to dismiss a patient who reports a persistent change after treatment.
A return to exactly the appearance you had before filler should not be promised¹¹. Persistent concerns deserve examination and comparison with previous photographs, rather than automatic reassurance or an immediate recommendation for more injections.
What are the side effects of hyaluronidase?
Local reactions can include swelling, redness, itching, bruising and discomfort³. Allergic reactions, including serious reactions, have also been reported⁹.
Tell the doctor about previous reactions to hyaluronidase and significant bee or wasp sting allergies, as these may affect the risk assessment⁹. The consultation should address both the medicine and any other substances used during the procedure.
Breathing difficulty, throat or tongue swelling, or collapse after an injection requires emergency assistance⁹. Call 995 in Singapore rather than waiting to see whether the reaction settles⁶.
Does an allergy test guarantee safety?
An allergy assessment may be appropriate before elective treatment, depending on the history and preparation⁹. A negative skin test cannot exclude every allergic reaction, including reactions that develop later¹.
Emergency treatment for suspected HA vascular occlusion should not be delayed solely to perform routine skin testing². That decision belongs to the clinician managing the emergency, with appropriate preparation to treat an allergic reaction.
What should you expect after filler dissolving?
Swelling and bruising can temporarily obscure the contour after treatment³. Follow the clinician’s written instructions and clarify whether any massage is specifically advised, rather than trying to reshape the area yourself.
Ask when the result will be assessed and how to obtain advice if symptoms change. Increasing redness, warmth, pain or a growing lump warrants prompt review rather than being assumed to be normal recovery³.
When can filler be injected again?
Expert guidance recommends waiting at least two weeks after elective dissolving, and longer when swelling persists, before considering another filler treatment⁹. This is a practical recommendation for reassessing the tissues rather than evidence that every patient is ready at two weeks⁹.
The original problem should also inform the decision³. After infection, inflammation or a vascular complication, resolving the medical concern takes priority over a planned cosmetic refill³.
Read my cheek filler guide for a discussion of volume, contour and treatment limits. Further filler remains a choice rather than an automatic next step after dissolving.
What does filler dissolving cost in Singapore?
Request a quotation after assessment that explains the consultation, proposed treatment, any imaging and planned reviews. Clarify how further treatment would be charged if the initial response is incomplete.
The Skin Longevity Clinic’s article on your first aesthetic consultation includes questions about treatment planning and ongoing care. Bring previous injection records and photographs, and ask what the proposed correction is expected to change.
A useful consultation should explain the likely benefit and the limits of dissolving with equal clarity. The aim is to address the concern without treating another injection as the inevitable answer.
References
- Jung H. Hyaluronidase: An overview of its properties, applications, and side effects. Archives of Plastic Surgery. 2020;47(4):297 to 300.
- Kroumpouzos G, Treacy P. Hyaluronidase for Dermal Filler Complications: Review of Applications and Dosage Recommendations. JMIR Dermatology. 2024;7:e50403.
- Urdiales Gálvez F, Escoda Delgado N, Figueiredo V, et al. Treatment of Soft Tissue Filler Complications: Expert Consensus Recommendations. Aesthetic Plastic Surgery. 2018;42:498 to 510.
- Murray G, Convery C, Walker L, Davies E. Guideline for the Management of Hyaluronic Acid Filler Induced Vascular Occlusion. Journal of Clinical and Aesthetic Dermatology. 2021;14(5):E61 to E69.
- Sansome S, Clague M, Convery C, et al. Consensus Guidelines for the Management of Tissue Filler Induced Vision Loss in the United Kingdom. Aesthetic Surgery Journal. 2026;46(5):563 to 568.
- Singapore Civil Defence Force. Emergency Medical Services.
- Kroumpouzos G, Harris S, Bhargava S, Wortsman X. Complications of fillers in the lips and perioral area: Prevention, assessment, and management focusing on ultrasound guidance. Journal of Plastic, Reconstructive & Aesthetic Surgery. 2023;84:656 to 669.
- Woodward J, Cox SE, Kato K, et al. Infraorbital Hollow Rejuvenation: Considerations, Complications, and the Contributions of Midface Volumization. Aesthetic Surgery Journal Open Forum. 2023;5:ojad016.
- Murray G, Convery C, Walker L, Davies E. Guideline for the Safe Use of Hyaluronidase in Aesthetic Medicine, Including Modified High Dose Protocol. Journal of Clinical and Aesthetic Dermatology. 2021;14(8):E69 to E75.
- Alam M, Hughart R, Geisler A, et al. Effectiveness of Low Doses of Hyaluronidase to Remove Hyaluronic Acid Filler Nodules: A Randomized Clinical Trial. JAMA Dermatology. 2018;154(7):765 to 772.
- Wilde CL, Jiang K, Lee S, Ezra DG. The Posthyaluronidase Syndrome: Dosing Strategies for Hyaluronidase in the Dissolving of Facial Filler and Independent Predictors of Poor Outcomes. Plastic and Reconstructive Surgery Global Open. 2024;12(4):e5765.
No Comments