5 ways to accurately distinguish between fillers and silicone

With over a decade of experience in non-surgical aesthetic medicine, HBIO Clinic has treated hundreds of cases involving complications from liquid silicone injections mislabeled as “budget-friendly fillers.” Many women remain unaware of the risks and do not know how to distinguish between these two substances. Drawing on its practical expertise, HBIO Clinic explains how to accurately differentiate between fillers and silicone, helping you safeguard your beauty.

Is it possible to check for fillers or silicone at home?

It is impossible to make an accurate assessment simply by self-examination or visual inspection at home. Sensations of softness or hardness, or the persistence of the injected area, serve only as rough indicators. You should not attempt to massage, squeeze, or inject dissolving agents yourself. If you have concerns, consult a doctor and undergo appropriate diagnostic procedures to ensure a reliable assessment.

5 ways to accurately distinguish between fillers and silicone

The following signs, compiled from clinical practice at HBIO Clinic, will help you self-check or evaluate the product before and after injection.

1. Check for reaction to the dissolving injection

This is considered the most accurate method.

If the injected material is HA filler, the use of the enzyme hyaluronidase causes the filler to gradually dissolve over a period of 24 to 48 hours; the treated area softens and returns to a state nearly identical to its original condition.

Conversely, if silicone was injected, the mass remains unchanged even after repeated attempts to dissolve it. This occurs because silicone does not react with the specialized enzyme. For this reason, doctors often prescribe a dissolving injection when it is necessary to precisely identify the substance present beneath the skin.

Kiểm tra phản ứng với tiêm tan
Check for reaction to the dissolving injection

2. Sensation upon palpation of the injection site

Manual palpation also helps assess the characteristics of the filler material. With genuine HA fillers, the treated area feels soft, retains natural elasticity, and remains stable in the sculpted position; the filler does not shift or deform upon light touch.

In contrast, silicone tends to feel abnormally hard. Over time, small granules or lumps may be palpable beneath the skin. Because it does not bond with the surrounding tissue, silicone tends to migrate due to gravity, leading to a crooked nasal bridge, a sagging chin, or deformity of the treated area.

3. Observe changes over time

Fillers and silicone behave very differently after being introduced into the body.

With HA fillers, mild swelling and bruising last only for the first few days. Afterward, the treated area stabilizes, takes on a pleasing shape, and causes minimal discomfort.

In contrast, silicone often “deceives” users by initially providing an attractive appearance for the first few months. However, persistent inflammation eventually flares up. The treated area frequently becomes red and feels tight or tender whenever the weather changes or the body is fatigued. Over time, the skin thins, revealing purplish veins or developing a rough, “orange-peel” texture.

Quan sát diễn biến theo thời gian
Observe changes over time

4. Diagnostic images on the ultrasound machine

Soft-tissue ultrasound is an effective diagnostic aid that allows doctors to accurately visualize dermal fillers beneath the skin.

On ultrasound imaging, HA fillers typically appear as homogeneous masses located within the intended tissue layer.

In contrast, liquid silicone produces a characteristic appearance known as the “snowstorm artifact,” caused by silicone particles scattering the ultrasound waves. This enables doctors to assess the extent of the material’s spread and fibrosis, as well as the degree of silicone invasion into surrounding tissues.

Hình ảnh chẩn đoán trên máy siêu âm
Diagnostic images on an ultrasound machine

5. Check packaging, pricing, and the implementation process

You can assess the safety of the procedure even before the injection takes place by examining the product and the administration process.
Authentic fillers always come in individually sealed, sterile syringes featuring QR codes, security seals, and clearly marked expiration dates. They typically cost several million VND per cc and must only be administered by licensed medical practitioners.
In contrast, silicone or fillers of unknown origin are often decanted from large, unlabeled containers; they are very inexpensive and are marketed with claims such as “permanent beauty,” “never dissolves,” or “maintenance-free.” These are all major red flags that require extreme caution.

What should you do if you don’t know whether you received dermal fillers or silicone injections?

Many people undergo cosmetic injections but later cannot clearly recall which type of filler was used. If you find yourself in this situation, you should not attempt to guess based solely on touch, nor should you try to massage the area or inject a dissolving agent yourself. Each filler has unique properties, and intervening without a clear diagnosis can lead to further risks.
A safer approach is to visit a facility staffed by qualified medical professionals for an examination. Depending on the condition of the treated area, the doctor may recommend appropriate diagnostic methods—such as soft-tissue ultrasound—to assess the filler material. Once the specific situation is determined, you will receive advice on the safest and most suitable course of action for monitoring or treatment.

Consequences of accidental silicone injection

Liquid silicone not only compromises aesthetics but also carries the risk of serious complications.

Over time, the substance can cause tissue fibrosis, granuloma formation, chronic inflammation, persistent infection, or compression of blood vessels. In severe cases, the silicone may migrate to other areas of the face, further complicating treatment.

A major concern is that removing silicone is not as simple as dissolving dermal fillers; doctors often must perform surgical excision in stages to minimize damage to healthy tissue.

Hậu quả khi tiêm nhầm Silicon
Consequences of accidental silicone injection

What should you do if you suspect you have been injected with silicone?

If the injection site develops hardening, lumps, persistent pain, recurring redness, or signs of migration, do not attempt to dissolve the filler or massage the area yourself. Instead, visit a reputable aesthetic clinic to have a doctor examine the site, perform a soft-tissue ultrasound, and accurately identify the type of filler used, in order to determine a safe course of treatment.

Nên làm gì khi nghi ngờ đã tiêm Silicon?
What should you do if you suspect you have been injected with silicone
With over a decade of experience in non-surgical aesthetic medicine, HBIO Clinic has successfully treated numerous cases of complications arising from the use of low-quality fillers or liquid silicone.
HBIO Clinic’s team of physicians personally conducts examinations and assessments using modern, high-tech diagnostic methods and provides personalized treatment plans, thereby minimizing tissue damage and reducing the risk of long-term deformity.

Frequently Asked Questions: How to Distinguish Between Dermal Fillers and Silicone

Can fillers and silicone be distinguished with the naked eye?

Not entirely. They can only be identified through clinical signs, reactions to dissolving agents, and diagnostic methods such as soft-tissue ultrasound.

Can silicone be dissolved?

No. Silicone does not react with the enzyme hyaluronidase, so it cannot be dissolved like HA fillers.

How long does it take for silicone complications to appear?

In some cases, complications appear after a few weeks, while in others, they may only be detected months or even years after the injection.

Do genuine fillers last forever?

No. HA fillers are gradually broken down by the body over time; they typically last between 6 and 18 months, depending on the specific product and the individual’s physiology.

We hope this article has helped you distinguish between fillers and silicone so you can make safe choices regarding cosmetic procedures. If you have concerns about a filler you have received or notice any unusual symptoms, please contact HBIO Clinic to consult directly with a specialist who can provide a proper assessment and recommend a safe, appropriate course of action.