Quick Answer
- What dissolves filler: An enzyme called hyaluronidase
- Works on: Hyaluronic acid fillers only
- Onset: Within minutes to hours. Full effect within 24 to 48 hours.
- Sessions: Often 1. Some cases need 2 or 3.
- Common uses: Lumps, overfilling, uneven shape, migration and urgent complications
- Main risk: Allergic reaction, which is uncommon
- Refill: Usually after about 2 weeks
What Is Hyaluronidase?
Hyaluronidase is an enzyme. Your body makes a natural form of the enzyme to recycle hyaluronic acid in your skin. The injectable form speeds up the breakdown of hyaluronic acid filler.
Doctors have used hyaluronidase in medicine for decades, for example to help other injected medicines spread through tissue. Dissolving filler is an off-label use in many countries and is standard practice in aesthetic medicine.
How Does Hyaluronidase Dissolve Filler?
Filler gel consists of long hyaluronic acid chains linked together. The enzyme cuts the chains into small fragments. Your body then absorbs the fragments.
- Soft gels: Fewer links between chains. These dissolve faster.
- Firm gels: More links between chains. These need a higher dose or a second session.
When Do Doctors Dissolve Filler?
| Reason | How the Problem Looks | Urgency |
|---|---|---|
| Overfilling | An area looks too full or heavy | Planned |
| Lumps or nodules | Firm bumps under the skin | Planned, after review |
| Uneven shape | One side looks fuller | Planned |
| Migration | Filler sits outside the intended area, such as above the lip border | Planned |
| Blue-grey tint | Gel placed too close to the surface under thin skin | Planned |
| Under-eye puffiness | Filler holding water in the tear trough | Planned |
| Starting fresh | Old filler from several past treatments | Planned |
| Blocked blood vessel | Severe pain with pale or dusky skin | Emergency |
Filler also fades on its own. See how long dermal fillers last for timelines by area.
What Happens During a Dissolving Appointment?
- Assessment: Your doctor examines the area and reviews your filler history and allergies.
- Allergy check: Some doctors perform a small skin test on the forearm first. In an emergency, treatment goes ahead without delay.
- Injection: Your doctor injects small amounts of the enzyme into the filler.
- Massage: Gentle massage spreads the enzyme through the gel.
- Review: Your doctor reviews the result after 1 to 2 weeks and repeats the treatment where needed.
The appointment takes around 15 to 30 minutes. Most people feel a brief sting.
How Do You Prepare for a Dissolving Appointment?
- Bring records of your past filler: the product type, the amount and the date
- Tell your doctor about every allergy, including bee and wasp stings
- List your medication, including blood thinners
- Arrive with clean skin and no makeup on the area
- Plan a quiet day afterwards, since swelling is common
How Fast Does Filler Dissolve?
| Time After Treatment | What to Expect |
|---|---|
| First hours | The area softens. Swelling from the injection hides the change. |
| 24 to 48 hours | Most of the effect shows |
| Day 3 to 7 | Swelling and bruising settle |
| Week 2 | Final result. Review and plan any refill. |
Does Hyaluronidase Dissolve Your Natural Hyaluronic Acid?
The enzyme acts on all hyaluronic acid in the injected area, including your own. Your body replaces natural hyaluronic acid within days. Some people notice a temporary hollow or slightly loose look, which improves as the skin recovers. Careful dosing limits the effect on surrounding tissue.
What Are the Side Effects and Risks?
- Swelling, redness and tenderness for 1 to 3 days
- Small bruises
- A temporary hollow look in the treated area
- More filler dissolved than planned, corrected with a refill
- Allergic reaction. Mild reactions cause itching and swelling. Severe reactions are rare and need emergency care.
Tell your doctor about any allergy to bee or wasp stings. Insect venom contains a similar enzyme, and a history of reactions raises your risk.
Which Fillers Does Hyaluronidase Not Dissolve?
| Filler Type | Dissolves With Hyaluronidase |
|---|---|
| Hyaluronic acid fillers | Yes |
| Calcium hydroxylapatite | No |
| Poly-L-lactic acid | No |
| Polycaprolactone | No |
| Long-lasting fillers and silicone | No |
| Fat transfer | No |
Unsure which filler you had? Bring any records to your consultation. Some doctors use ultrasound to identify and locate filler.
When Is a Refill Safe After Dissolving?
Most doctors wait about 2 weeks. Swelling settles, and the enzyme has finished working. Your doctor then assesses your natural shape and plans a smaller, staged volume.
What Aftercare Follows Filler Dissolving?
- Apply a cool compress for swelling, 10 minutes at a time
- Skip makeup on the area for 12 hours
- Skip alcohol, intense exercise and heat for 24 hours
- Watch for itching, hives or swelling of the lips or face in the first hours, and contact your clinic if these appear
- Attend your review appointment
Planning new filler afterwards? Read the dermal filler aftercare guide.
Frequently Asked Questions
Does dissolving filler hurt?
Most people feel a sting for a few seconds. Numbing cream helps.
How many sessions does filler dissolving take?
Often one. Firm gels, large volumes or old filler sometimes need two or three sessions, spaced 1 to 2 weeks apart.
Does filler dissolve fully?
Hyaluronic acid filler usually dissolves fully with the right dose. Other filler types do not respond to the enzyme.
Do lips go back to normal after dissolving?
Yes, for most people. Lips return close to their shape before filler once swelling settles.
Does filler dissolve on its own?
Yes. Your body breaks hyaluronic acid filler down over 6 to 18 months, by area. Dissolving speeds up the process.
Is dissolving filler safe?
Doctors use hyaluronidase routinely. The main risk is an allergic reaction, which is uncommon. A licensed doctor and a full allergy history lower the risk.
Do doctors dissolve part of the filler only?
Yes. A low dose softens or reduces one part of an area. Partial dissolving is less predictable than full dissolving, so your doctor reviews the result at 2 weeks.
Related Guides
- Anti-Wrinkle Injections vs Dermal Fillers
- How Long Do Dermal Fillers Last?
- How Long Do Lip Fillers Last?
- Dermal Filler Aftercare
- Are Anti-Wrinkle Injections Safe?
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This article is for general educational purposes and does not replace a personalised consultation with a licensed medical aesthetics provider. Individual results vary.