What is filler dissolving, and which fillers can it treat?
Filler dissolving uses hyaluronidase, an enzyme that breaks down hyaluronic acid (HA). A doctor may use it to reduce unwanted HA filler or treat certain filler complications. It does not guarantee complete removal, an exact return to your previous appearance or a result in one session.
- HA fillers: can respond to hyaluronidase, although products and individual results vary.
- Non-HA materials: calcium hydroxylapatite (CaHA), PLLA, PDLLA, PMMA and silicone do not dissolve with hyaluronidase in the same way. Non-HA does not automatically mean counterfeit or permanent.
- Combination products: dissolving their HA component does not remove the other ingredients.
If you do not know what was injected, request the product name and treatment record. Assessment, sometimes supported by ultrasound, can help clarify the problem. For non-HA filler, options may include monitoring, treating a complication or surgery in selected cases. Surgery also carries risks and may not remove all the material.
Which symptoms need urgent medical attention?
Do not wait for a routine dissolving appointment if symptoms suggest a serious complication.
- Severe or unusual pain, pale skin, a dusky or mottled colour, or unusually cool skin after filler: seek immediate medical assessment for possible loss of blood supply. If the treating doctor cannot assess you immediately, go to an emergency department.
- Blurred, double or lost vision, eye pain, facial drooping, weakness or difficulty speaking: seek emergency hospital care immediately and explain that you have had filler. Treatment at a clinic must not delay transfer.
- Breathing difficulty, tongue or throat swelling, faintness or collapse: get emergency help immediately. A severe allergic reaction requires emergency treatment, not filler dissolving alone.
Prompt care matters, but there is no guaranteed rescue window or treatment that reliably restores lost vision. Hyaluronidase may be part of treatment for an HA-related blood-vessel blockage; hospital care may still be necessary.
Does every lump or uneven result need dissolving?
No. A lump can reflect filler placement, swelling, inflammation or infection. The cause determines the treatment. Increasing redness, warmth, pain, fever or discharge needs prompt assessment rather than another cosmetic injection.
For an otherwise stable cosmetic concern, such as overfilling, asymmetry or migration, discuss whether to wait, dissolve part of the filler or pursue another plan. A targeted correction cannot promise to leave all nearby filler untouched.
Is dissolving filler safe?
Hyaluronidase has risks, even when a trained doctor gives it. Pain, stinging, swelling, redness, itching and bruising can occur. Allergic reactions, including severe reactions, are possible. The clinic should explain its observation, emergency-response and referral arrangements.
The cosmetic outcome can also disappoint: filler may remain, or the area may look more hollow or uneven than expected. Hyaluronidase acts on the body’s own HA as well as HA filler. This does not establish permanent tissue damage, but neither does normal HA turnover guarantee that your appearance will return to baseline within a few days.
Who needs extra caution, and is an allergy test required?
- Previous allergy to hyaluronidase or its ingredients: tell the doctor before treatment. A negative skin test does not override a known allergy.
- A serious reaction to bee or wasp stings: disclose this because cross-reactivity is possible. Specialist allergy assessment may be needed.
- Pregnancy or breastfeeding: discuss postponing non-essential cosmetic dissolving because safety information is limited. An emergency needs immediate medical assessment.
- Infection or acute inflammation at the site: the cause needs assessment first; hyaluronidase can spread a local infection.
Skin testing is not a universal requirement or a guarantee against allergy. The doctor should consider your history and the specific medicine’s instructions. Testing must not delay emergency treatment for suspected vascular occlusion.
What happens at the appointment, and will it hurt?
The doctor assesses the area, previous filler and your goals, then explains the options, risks and follow-up. Bring the filler details or packaging if available, and mention previous reactions and recent procedures in the same area.
Injections can sting or burn. Pain relief depends on the case. Allow time for consultation and observation as well as treatment; a short injection time does not mean everyone can leave immediately. Do not buy dissolving injections to use yourself.
How quickly does filler dissolve?
Visible change and the final cosmetic result are different. Swelling can initially hide a reduction in filler. Product, amount, location and tissue response affect the result, and further treatment may be necessary.
For elective correction, CMAC guidance suggests an initial reassessment after about 48 hours. This is not a deadline for complete dissolution or settled swelling. A persistent lump should be reassessed before repeating treatment. Fully broken-down filler does not grow back, but residual filler or swelling can look like a return.
Will my face look the same, and when can I have filler again?
An exact return to your pre-filler appearance cannot be promised. Removing volume reveals the tissues underneath, which may have changed with time. Discuss the possibility of hollowing, loose-looking skin or further correction before elective treatment.
After uncomplicated elective dissolving, CMAC recommends waiting at least two weeks and until swelling has settled before planning new HA filler, longer if swelling persists. This supports assessment of the result; it does not mean the enzyme remains active for two weeks. Infection, impaired blood supply or another complication requires recovery and a separate reassessment.
How should I care for the area afterwards?
Keep the injection area clean and avoid pressing, rubbing or massaging it to fix a lump yourself. Follow the treating doctor’s instructions about compresses, makeup, exercise and heat; care after an emergency may differ from care after elective correction.
Attend the agreed review and know whom to contact if symptoms worsen. Use the urgent-care advice above rather than waiting for your follow-up appointment when warning signs develop.
How much does filler dissolving cost in Thailand?
Ask for a case-specific quote. Cost depends on the material injected, treatment area, medicine required, complexity and number of visits. Check whether the quote includes assessment, ultrasound if needed, medication and follow-up, and how repeat treatment is charged.
Choose a licensed doctor and clinic. Ask to see the medicine’s name, Thai registration details, packaging, batch number and expiry date, and ask about emergency referral arrangements. Approval of a medicine in another country does not establish its Thai status or approval for every use.
For a non-urgent concern, contact Smooth Clinic about an assessment and current costs. Confirm whether the clinic can assess your particular filler problem before booking.
References
- DailyMed. HYLENEX recombinant prescribing information, revised November 2024. U.S. product information; it does not verify Thai authorization.
- Murray G, et al. Guideline for the Safe Use of Hyaluronidase in Aesthetic Medicine. Journal of Clinical and Aesthetic Dermatology. 2021;14(8):E69–E75. Expert guidance, not a guarantee of individual outcomes.
- RANZCO. Guideline for Filler Blindness, 2024.
- Sansome S, et al. Consensus Guidelines for the Management of Tissue Filler–Induced Vision Loss in the United Kingdom, 2026.
- U.S. FDA. Dermal fillers advisory-panel executive summary, August 2025, pages 16–17: removal options, limitations and reported adverse events.
- Alam M, et al. Randomized trial of hyaluronidase for small HA filler nodules. JAMA Dermatology. 2018;154(7):765–772. A small arm-injection study; it cannot predict every facial correction or emergency outcome.