Dissolving Filler: The Complete Guide

Dermal fillers are one of the most popular aesthetic treatments in the UK. But not every filler treatment goes to plan. Whether it's overfilling, migration, asymmetry, or simply a result you're not happy with, the good news is that hyaluronic acid fillers can be reversed. The process is called filler dissolving, and it's one of the most important safety nets in non-surgical aesthetics.

If you're considering having filler dissolved, or you're researching it because something doesn't look right after a previous treatment, this guide covers everything you need to know.

What Is Filler Dissolving?

Filler dissolving is a non-surgical procedure that uses an enzyme called hyaluronidase to break down hyaluronic acid based dermal fillers. Hyaluronidase occurs naturally in the body, where it plays a role in the normal turnover of hyaluronic acid in your tissues. When injected into an area where filler has been placed, it accelerates the breakdown of the product, allowing the treated area to return to its natural state.

It is most commonly used to correct overfilled lips, restore natural proportions to cheeks that have been treated too aggressively, address filler that has migrated away from where it was originally placed, resolve lumps or unevenness caused by poor technique, treat complications such as vascular occlusion where filler compresses or blocks a blood vessel, and remove old filler before starting fresh with a new treatment plan.

Why Would You Need Filler Dissolved?

There are several reasons patients seek filler dissolving, and they don't always involve a bad result. Some of the most common include:

Overfilling. This is the most frequent reason. Too much product in one area, whether the lips, cheeks, or jawline, creates an unnatural appearance that can be difficult to live with. The problem often builds gradually over multiple top up appointments, where small amounts are added each time until the cumulative effect becomes too much.

Filler migration. Over time, filler can move away from where it was originally placed. This is particularly common in the lips, where product can drift above the lip border creating a shelf like appearance, and around the eyes, where displaced filler can cause puffiness or shadows.

Asymmetry. Uneven placement or uneven absorption can leave one side looking different from the other. Sometimes this is subtle and sometimes it's significant enough to warrant dissolving and starting again.

Previous work you're unhappy with. Many patients come to us after having treatment at another clinic and wanting a reset. Rather than layering new filler on top of old product (which rarely produces a good result), dissolving first gives us a clean foundation to work from.

Complications. In rare but serious cases, filler can compress or block a blood vessel. Hyaluronidase is the emergency treatment for vascular occlusion and can prevent tissue damage when administered quickly. This is one of the reasons every clinic offering filler should have hyaluronidase on hand at all times.

How Does Filler Dissolving Work?

The procedure is straightforward. The area is numbed using a topical or local anaesthetic, and then hyaluronidase is injected directly into the area where the filler is sitting. The enzyme begins breaking down the hyaluronic acid almost immediately.

Most patients notice a visible change within hours, though it can take 24 to 48 hours for the full effect to become apparent. In some cases, particularly where large volumes of filler are present or the product has been in place for a long time, more than one session may be needed to dissolve everything completely.

The treatment itself takes around 15 to 30 minutes depending on how many areas are being treated. Most patients describe a mild stinging or burning sensation during the injection, which subsides quickly.

The Role of Ultrasound in Filler Dissolving

One of the biggest challenges with filler dissolving is knowing exactly where the filler is sitting beneath the skin. In many cases, particularly when filler has been in place for months or years, or when it has migrated, the product is not where you'd expect it to be. Dissolving blind, which is still the standard approach at most clinics, means the practitioner is estimating where to inject the hyaluronidase based on what they can see and feel from the surface.

At Karwal Aesthetics, we use ultrasound imaging to visualise the filler beneath the skin before and during the dissolving process. This allows us to see exactly where the product is, how much is there, and whether it has migrated. The result is a more precise, more thorough dissolution with less guesswork and less waste of hyaluronidase.

Ultrasound guided dissolving is particularly valuable for patients who have had filler in the under eye area (where the anatomy is delicate and the margin for error is small), patients who have had multiple rounds of filler over several years and aren't sure what's still there, and patients who have experienced migration and need targeted removal without affecting the surrounding tissue.

What to Expect After Filler Dissolving

Recovery is generally quick and uncomplicated. You may experience some swelling, redness, and bruising in the treated area, which typically settles within a few days. The area may also feel tender or slightly lumpy initially as the dissolved filler is reabsorbed by the body.

You should avoid touching or massaging the area for the first 24 hours and hold off on makeup or active skincare products over the treated area during this time. Exercise and alcohol are best avoided for 24 to 48 hours to minimise swelling and bruising.

The final result is usually visible within one to two weeks once all swelling has resolved. If further dissolving is needed, a follow up session can be arranged at that point.

Can You Have Filler Again After Dissolving?

Yes. Most practitioners recommend waiting at least two weeks after dissolving before having new filler placed. This allows the hyaluronidase to fully do its work and the tissue to settle, giving you and your practitioner a clear picture of the baseline anatomy before planning a new treatment.

This two step approach (dissolve first, then re-treat) is something we recommend regularly at Karwal Aesthetics, particularly for patients coming to us from other clinics. Starting from a clean canvas almost always produces a better result than trying to build on top of existing product, especially when the existing product has migrated, been placed unevenly, or accumulated over multiple sessions.

Is Filler Dissolving Safe?

Filler dissolving is considered a safe procedure when performed by a qualified practitioner. Hyaluronidase is a naturally occurring enzyme and has been used in medicine for decades, not just in aesthetics but across a range of clinical applications.

That said, no procedure is entirely without risk. Possible side effects include temporary swelling, redness, bruising, and itching at the injection site. Allergic reactions to hyaluronidase are rare but possible, which is why a patch test or careful medical history review is carried out beforehand.

There is also a common concern about whether hyaluronidase dissolves your body's own natural hyaluronic acid along with the filler. The short answer is that it can temporarily affect the surrounding natural hyaluronic acid, but your body replenishes this quickly. The effect is not permanent and does not cause lasting damage to the skin.

How Much Does Filler Dissolving Cost?

At Karwal Aesthetics, filler dissolving starts at £200. The total cost depends on how many areas are being treated and whether ultrasound guidance is used. We provide a clear breakdown of costs during your consultation so there are no surprises.

How to Choose a Practitioner for Filler Dissolving

This is not a treatment to take lightly, and not every practitioner who offers filler is equipped to dissolve it properly. When choosing someone to dissolve your filler, look for a practitioner who has experience correcting other people's work, not just their own. Ask whether they use ultrasound to locate filler before dissolving. Make sure they carry out a thorough assessment rather than simply injecting hyaluronidase where you point. And confirm they have a clear plan, including whether you'll need one session or multiple, and what the next steps are once the filler has been removed.

Dissolving filler properly is a skill in its own right. It requires an understanding of anatomy, product behaviour, and how filler interacts with tissue over time. It's not just the reverse of putting filler in.

The Bottom Line

Filler dissolving is a safe, effective, and relatively quick way to reverse dermal filler results that haven't gone to plan. Whether you're dealing with overfilling, migration, asymmetry, or simply a result you've grown tired of, hyaluronidase can return the treated area to its natural state and give you the option to start fresh.

If you're unhappy with filler from a previous treatment, or you want to reset before having new filler placed, book a consultation with Dr Arun Karwal at our Mayfair clinic. We'll assess what's there, explain your options honestly, and put together a plan that gets you to the result you should have had in the first place.