Polynucleotides vs dermal filler
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These two treatments are often discussed together but they are trying to do different things. Dermal filler adds volume and changes shape. Polynucleotides aim to change the quality of the skin itself and add essentially no volume. Choosing between them starts with being clear about which problem you are trying to solve.
Different purposes, different products
Dermal filler is usually a cross-linked hyaluronic acid gel, manufactured to hold its shape. It is used to restore or create volume: cheeks, chin, jawline, lips, deep folds. The change is immediate and structural.
Polynucleotides are a fluid preparation of purified DNA fragments used to improve hydration, texture and firmness of the skin. The change is gradual, subtle, and does not alter facial proportions.
Put simply: filler changes the shape under the skin, polynucleotides target the condition of the skin itself.
How each is administered
Filler is placed in larger boluses, often deep against bone or in the mid-face fat compartments, by needle or cannula. Precision matters enormously because the product stays where it is put and because deeper injection near major vessels carries real risk.
Polynucleotides are placed superficially in many small amounts across an area, or fanned just under the skin with a cannula. A session usually leaves a pattern of tiny blebs that settle within hours.
Filler is often a single appointment with a review; polynucleotides are a course of two to three sessions. See how many sessions.
Longevity and upkeep
Hyaluronic acid filler typically lasts somewhere between six and eighteen months depending on the product, the site and the individual, with some firmer products lasting longer.
Polynucleotide results are usually described as building over one to three months after a course and gradually fading over six to twelve months, at which point maintenance is offered. The product itself is broken down within weeks; what persists is whatever change it prompted in the skin.
On safety, both have local side effects such as swelling, bruising and tenderness. Filler carries a higher risk of the serious complications associated with deeper, higher-volume injection, including vascular occlusion, and it can be dissolved with hyaluronidase if needed. Polynucleotides cannot be dissolved, but the very small volumes and superficial placement make serious problems less likely. See side effects.
Can they be combined?
Yes, and they often are, because they address different things. A common approach is to treat structure with filler and skin quality with polynucleotides, usually in separate appointments spaced a couple of weeks apart so that swelling from one does not obscure assessment of the other.
Order and spacing are a matter of clinical judgement rather than a fixed rule. If a practitioner proposes several injectable treatments in one sitting, it is reasonable to ask why, how they will tell which treatment caused any reaction, and what the total cost is.
In England, Scotland, Wales and Northern Ireland it is illegal to give dermal fillers or botulinum toxin to under-18s for cosmetic purposes. See who can administer polynucleotides for the wider regulatory picture.