In short. A purified DNA-fragment gel of marine origin, injected for skin quality rather than volume: what the material is, and what the name does not say.
Key points
- Polynucleotide is a chemical description.
- It says what the syringe contains.
- It does not say what the skin will do in response, and the two have been allowed to merge in most of the material written about this product class.
The name is the first thing to get straight, because it does more work than the evidence behind it. A polynucleotide injectable is a gel carrying short, purified fragments of DNA, most often prepared from a marine source, which is placed into the skin with a fine needle. That is the material. It is not a filler in the sense that a gel of cross-linked hyaluronic acid is a filler, because its purpose is not to occupy a space and hold a contour. It is sold as a skin-quality injectable: something intended to change how skin behaves rather than how much of it there is.
What is in the syringe
The active material is a mixture of DNA fragments rather than intact DNA, and the fragments are short enough that they cannot carry genetic information in any meaningful sense. They are suspended in a carrier gel, and the preparation is intended to be broken down and cleared by the body over time. That much is a chemistry question and it is reasonably well settled. What is not settled is what the fragments do once they are in the skin. The plausible mechanism is that the material provokes a tissue response in the skin around it, and there is laboratory work that supports a mechanism of that kind. Laboratory work is not living skin, and the step from one to the other is the step that has not been taken.
The name describes the material, not an effect
Polynucleotide is a chemical description. It says what the syringe contains. It does not say what the skin will do in response, and the two have been allowed to merge in most of the material written about this product class.
How it is used
In practice it is injected into the superficial layers of the skin across the face, into the thin skin under the eye, or into the scalp where hair thinning is being treated. A course is usually more than one session, spaced weeks apart, and the effect being looked for is a change in texture, firmness or fine lines rather than a change in shape. Nothing about the technique is unusual. It is the same kind of procedure as any other injectable, with the same category of immediate risks.
Ask what is actually in the syringe
- What is the material, in plain words, and where is it sourced from?
- Is this product a medical device, a medicine, or neither, in the market where you would be treated?
- What is the evidence for the effect being claimed, and how large and how long was the study?
Those three answers are reasonable to ask for and are rarely volunteered. Asking them needs no clinical knowledge, and a clinic that cannot answer them has told you something worth knowing. None of the three is a hostile question, and the answers are short when the person answering has read the material they are selling.
Frequently asked questions
What is a polynucleotide injectable made from?
Short, purified fragments of DNA, usually prepared from a marine source, carried in a gel. The fragments are short enough that they cannot carry genetic information, and the material is intended to be broken down and cleared by the body over time. That much is a chemistry question and is reasonably well settled.
How is it different from a hyaluronic acid filler?
A filler occupies a space and its result is seen as volume or contour, and a hyaluronic acid filler can be dissolved if the outcome is wrong. A polynucleotide injectable is intended to change how skin behaves, leaves no volume, and has no dissolving agent. They are different categories rather than different versions of one treatment.
How many sessions does a course usually involve?
Usually more than one, spaced some weeks apart, and the number differs between protocols and between people. Two things are worth knowing before a course starts: it is a course rather than a single appointment, and the effect being looked for is a change in texture rather than a change in shape. Your own plan may differ.
Risks & Limitations
- The published studies behind this product class are small, short and concentrated in a few centres, and a substantial share are supported by the companies selling the material.
- Long-term behaviour of the material is unmeasured, which is not the same as established and not the same as disproven.
- The material is marine-derived, so an allergy question exists and no straightforward test predicts a reaction.
- A material intended to provoke a tissue response can produce nodules or a granuloma, which are harder to manage than an unwanted filler that can be dissolved.
- A device registration records the safety and performance of a material and is not a finding that the treatment works; an injectable into the face also carries the rare risk of a vascular event.
When to Seek Care
- A firm lump, nodule or area of swelling appearing weeks or months after an injection — have it assessed by a clinician.
- Skin that turns white, dusky or painful during or shortly after an injection, or any change in vision — seek care immediately.
- Spreading redness, warmth or fever, or pain that is worsening rather than settling.
- Contact the service that holds your records, or the hospital’s outpatient channels, rather than relying on a website.
References & Further Reading
- European Medicines Agency (EMA) and national regulators — classification of injectable products and published assessment reports
- U.S. Food and Drug Administration (FDA) — device and drug classification, and approved labelling
- National Medical Products Administration (NMPA, China) — registration of medical devices and medicines
- Cochrane Library — systematic reviews
- Chinese Medical Association Plastic Surgery Branch — clinical guidance
This page is patient education, not medical advice, and it does not cite individual studies. It reviews evidence and regulation; it is not a booking page and does not recommend a treatment. Discuss your own case with a qualified clinician. To ask a question about this review, see Contact & Consultation.