Permanent filler: what it is and the debate
Quick facts
- Definition
- Injectable material that the body does not break down and that stays in the tissue indefinitely.
- Contrast
- Resorbable fillers (such as hyaluronic acid) are broken down over time.
- Debate
- The inability to easily reverse the product and the possibility of late complications.
- Point of attention
- Patients with an old, unidentified filler call for caution and investigation before new injections.
A permanent filler is an injectable material that the body does not break down, and that therefore stays in the tissue indefinitely. It is the opposite of resorbable fillers, such as hyaluronic acid, which break down gradually and can, if needed, be dissolved with hyaluronidase. The topic is debated because permanence is at once its promise and its main risk.
What are the practical differences?
| Feature | Resorbable | Permanent |
|---|---|---|
| Fate in the body | Broken down over time (biodegradability) | Stays |
| Reversal | Possible, in the case of hyaluronic acid, with hyaluronidase | Generally no antidote |
| Maintenance | Periodic repeat sessions | Fewer planned repeats |
| Late complication | Less frequent, still possible | Described, starting months to years later |
| Correction | Simpler | May require medical or surgical management |
Permanence has an important consequence: the face keeps changing with aging while the material stays in the same place. Over time, this relationship can change the result.
Which risks are described?
For non-resorbable materials, the literature describes complications that can appear late: nodules, granulomas, chronic inflammation, material migration, deformities and asymmetry. Vascular complications, such as necrosis, can occur with any injectable. The material's biocompatibility influences the reaction but does not eliminate the risk.
Because it is hard to reverse, a complication with a permanent filler tends to be slower and more complex to treat. This is the central argument of those who prefer not to use them.
What are the arguments in favor?
Supporters cite durability and fewer sessions in selected cases. This, however, requires careful indication, knowledge of the product, specific training and very clear consent. The decision to use one or not, and the applicable rules, depend on the standards of the professional council and on health regulation, and should be checked carefully.
What to do when the patient already has a permanent filler?
The most common problem in the clinic is the patient who received, in the past, a product they cannot identify. Before injecting the same area again:
Also called: definitive filler, non-resorbable material.
Frequently asked questions
Can a permanent filler be undone?
Generally not in a simple way. Unlike hyaluronic acid, which can be dissolved with hyaluronidase, permanent fillers have no antidote. Complications may require medical or surgical treatment.
How do you know if a patient already has a permanent filler?
Through a detailed history, previous records, palpation and, when necessary, imaging. When in doubt, it is prudent to refer before injecting again.