Hyaluronic acid fillers are one of the most requested treatments for face contouring, but the results are not always pleasing. In some cases, asymmetry, excessive swelling, or simply regret occur after treatment. Fortunately, there is a safe and effective solution in these cases, hyaluronidase enzyme, which dissolves hyaluronic acid within a few hours. 

In this article, we will explain how this enzyme works, when it is used, the risks, and why it is considered an important part of safety in modern aesthetic medicine.

What Is Hyaluronidase?

Hyaluronidase is an enzyme that dissolves hyaluronic acid, including the one naturally located in the body and what is injected for aesthetic reasons, such as fillers. This substance is used in the cosmetic medication field as a corrective tooth, when the results of the fillers are not pleasing or when complications happen, such as extensive filling, asymmetry, or blockage of blood vessels.

This enzyme works by breaking the molecular bonds of hyaluronic acid, turning it into a shape that the body quickly digests and eliminates., Usually, the effect will be visible within 24 hours of injection and sometimes even earlier, depending on the filler amount and the body’s response. 

Hyaluronidase is only used for fillers that contain Hyaluronic acid, as most well-known fillers do. It doesn’t work for permanent fillers or those that contain other substances such as calcium hydroxylapatite or polycaprolactone.

How Does This Treatment Work In The Body?

Hyaluronidase works as a biologic catalyst, directly affecting the chemical structure of the hyaluronic acid that is located in the filler. When this enzyme is injected into the area where filler is applied, it will start to break the molecular bonds of the hyaluronic acid. 

This will turn the substance into an easier form to be absorbed and eliminated from the organism naturally, different from the fillers that stay for months or even years. Acid dissolved by hyaluronidase will be eliminated within a few hours to days.

After the injection, the body will react quickly to the enzyme. The effects are visible within 6–24 hours, but the biological process will continue even longer, secretly. 

In some cases, especially when there has been excessive use of the filler or when it has been placed in several deep layers of the skin, a second or third session may be necessary to achieve complete dissolution.

It is important to note that hyaluronidase does not only destroy the injected filler, but can also affect the hyaluronic acid that is naturally present in the body, albeit at minimal levels.

Therefore, it is important that the procedure is performed by an experienced professional who knows the exact structure of the face and the location of the product in order to minimize the loss of natural substances and maintain the balance of the skin.

This procedure is very precise and is usually performed with thin needles in the area where the unwanted product is located. During application, the patient may feel a slight stinging or temporary burning sensation.

However, this discomfort passes quickly and is replaced by a gradual improvement in appearance in the following days. The speed and efficiency of hyaluronidase make it one of the most important tools in the hands of any aesthetic doctor to guarantee safety and correction of results.

When Is The Use Of Hyaluronidase Recommended?

Hyaluronidase is not a standard part of every filler treatment, but it is a helpful tool that is essential when the results do not match the patient’s expectations or complications happen. 

The most common case is aesthetic dissatisfaction, such as when the added volume appears excessive, asymmetrical, or placed in a way that is not harmonious with the rest of the face. In these cases, the use of hyaluronidase helps to resolve the situation quickly and without surgical intervention.

Another situation when this enzyme is recommended is when the filler has migrated, so it has shifted from its original position when it was first injected. This can happen due to facial muscle movement, incorrect massaging technique after the treatment, or an improper injection technique.

Migration creates an unnatural swelling or deformed shape, and dissolving the filler with hyaluronidase is the quickest way to correct it. 

The most critical use of hyaluronidase happens when the filler blocks a blood vessel, hindering the supply of oxygen to the tissue. This is a rare but serious complication that can lead to necrosis (tissue death) if not treated at the right time. 

In these cases, hyaluronidase acts as an emergency treatment, immediately dissolving the hyaluronic acid and restoring blood circulation. 

Additionally, the enzyme might also be used to correct older treatments that are not fully dissolved, even after many months, or have created bumps under the skin. This happens frequently when low-quality filler is used, or when the filler is placed in deeper layers of the skin and has not properly spread.

In conclusion, hyaluronidase is recommended in cases of:

• Not feeling pleased with the results (visible asymmetry, extensive volume)
• Migrated or shifted filler.
• Serious complications such as blockage of the blood vessels. 
• The desire to remove the filler and return to the natural appearance.
• Removing old remaining filler or undissolved bumps under the skin.

In the right hands, this is a very safe and effective solution to reverse a treatment that has not turned out as expected.

Is Dissolving Fillers Safe?

Yes, dissolving fillers with hyaluronidase is considered a safe procedure when performed by trained medical professionals in the field. Hyaluronidase has been used in the field of medicine for decades, firstly for therapeutic reasons such as accelerating the absorption of drugs into the body, and today as one of the most trustworthy tools for correcting unpleasant cosmetic injections results. 

The most common risk of this substance is related to allergic reaction, which happens rarely and in patients who have a special sensitivity to this enzyme. For this reason, many clinics make a patch test by injecting  a very small amount of the substance in the skin to see how the body reacts. If there is no redness, swelling or unusual itching, the procedure will continue safely. 

Another common issue is that besides the filler, the hyaluronidase can also dissolve the hyaluronic acid that is naturally located in the skin, which will temporarily affect the hydration and elasticity levels of the treated area. However, this is temporary. The body produces hyaluronic acid itself, and the clinical balance will be restored within a week. The use of hydrating creams and serums will support the quick regeneration of the skin after the treatment.

It is also essential for the treatment to be performed in a controlled and corrected way, by injecting the enzyme only in the area where the filler is placed. Incorrect injection can dissolve more than necessary, leading to asymmetry or unnecessary reduction of the volume. 

In conclusion, dissolving fillers is very safe when performed by experienced professionals in the field. With a careful initial assessment and the right technique, the risks are minimal, and the benefits, such as restoring the symmetry and a natural look, are very significant. 

Side Effects And What To Expect After The Injection

Even though the filler dissolving procedure with hyaluronidase is quick and minimal, it remains an aesthetic intervention that can be accompanied by temporary side effects. 

These effects are minimal and will pass within a  few days, but it’s important for the patient to know what to expect after the injection to avoid panic or misunderstandings. 

After the injection, it is normal to experience a pinching or light burning sensation, especially during the procedure. This is a common effect of the substance, which will usually pass within 10–15 minutes. 

During the passing hours, swelling, bruising, or sensitivity in the treated area might occur, especially if a larger amount of the enzyme is used or if the area includes sensitive tissues such as around the eyes or lips. 

During the first or second day, some patients will notice a rapid decrease of the volume which is a sign that the filler has successfully dissolved. Sometimes, this can make the area feel “bare” or looser, but this is temporary.

The body will start to regenerate natural hyaluronic acid, and the appearance will be gradually improved in the passing weeks. During this phase, it is important to avoid new procedures, until the skin is fully stabilized. 

One of the rarest but possible complications includes allergic reaction to hyaluronidase; possible signs are severe itching, spread redness, unusual swelling, or breathing difficulties. 

In these cases, immediate medical intervention is required. For this reason, serious clinics always perform a patch test, especially for patients undergoing this procedure for the first time.

If the procedure is performed for correcting a serious complication such as the blockage of a blood vessel, the effect of hyaluronidase is immediate and will save the tissues from permanent damage. In this case, the patient might experience pain or sensitivity in the treated area for days but they will be managed with anti-inflammatory medications or soothing creams. 

To help the healing process and to improve the appearance of the skin after the treatment, it is recommended to use hydrating products, hyaluronic acid serums, and avoid activities that might irritate the area for the first 24–48 hours ( including sauna, intensive exercise, or facial massages). 

Does Hyaluronidase Dissolve Only The Filler Or Also The Natural Skin Acid?

One of the most common worries that patients have before aspecting to go through the hyaluronidase treatment is exactly this: will only the injected filler be dissolved or also the natural hyaluronic acid that is located in the skin?

The answer is yes, hyaluronidase can dissolve both types of hyaluronic acids, the injected one and the one produced by the body itself. 

However, the effect on natural hyaluronic acid is minimal and temporary. The enzyme mostly aims at the area where the acid concentration is higher, so the injected filler itself. 

When the procedure is performed carefully and the right amount is used, most of the effect will be concentrated there. Experienced medical professionals know how to inject the enzyme into the specific layer of the skin where the filler is placed, avoiding unnecessary intervention on the surrounding structures. 

In cases when a bigger amount of hyaluronidase, for example, when there is a bigger accumulation of the products or in cases of complications, the amount of the natural hyaluronic acid can be temporarily reduced. 

This can lead to a feeling of dryness in the skin, a slight decrease in elasticity, or a “hollowing out” of the area for a few days. But these effects are reversible. The skin is a very active organ and quickly recovers its own acid production, especially if supported with proper post-treatment care.

In some cases, this “temporary hollowness” is required because it allows the professional and the patient to assess the natural appearance of the face without the previous production and to plan the best treatment plan for future procedures. 

Some people choose to dissolve the fillers to start from zero to create a more natural and balanced look based on the anatomy of the face. 

If, after the treatment, the patient experiences a feeling of dryness or a lighter skin tone, the use of hyaluronic acid serums, hydrating creams, and sun protection is recommended.

Within a few weeks, the skin structure will be balanced again, and the treated area will look cleaner and more refreshed. 

So, while it is true that hyaluronidase can also affect the natural skin acid, this is neither dangerous nor permanent, and in the hands of a qualified professional, it is a simple process that can be managed carefully and precisely. 

In Conclusion: When Is This Treatment The Best Choice?

Dissolving fillers with hyaluronidase is one of the quick, safe and very effective solutions when the aesthetic results don’t turn out as suspected. Whether to correct excessive swelling, asymmetry, or complications such as blocked blood vessels, this procedure offers a controlled way to reverse the treatment without the need for surgical intervention.

This treatment is especially effective for those who want a fresh start, to improve the facial balance or feel better with their appearance. With the help of a qualified professional, hyaluronidase becomes a useful tool to restore facial naturalness and balance, safely and risk-free.