In short. Tissue regeneration, DNA repair and lasting change are asserted rather than demonstrated here, and each of those claims fails for a different reason.
Key points
- These are different statements and they are routinely collapsed into one.
- A study too small to establish an effect does not show that there is none, and a mechanism demonstrated in a laboratory does not show that there is one.
- Where the evidence cannot settle a question, the accurate answer is that it is open.
This is the counterpart to the guide that lists what the evidence supports, and it exists because the claims made in the other direction are just as confident and mostly unsupported. Three of them are worth naming precisely, because each is a sentence a reader is likely to meet and each fails for a different reason: the study that could test it has not been done in living skin, or it has been done only in a laboratory dish, or not enough time has passed for anyone to know.
Tissue regeneration
Regeneration is a word from biology that has been adopted here as a category name. Nothing published in living human skin shows that an injected polynucleotide causes new tissue to form in a way that could be measured against a control. What exists is a laboratory mechanism and a set of surface measurements. A product that changes how skin looks may be doing something useful, and calling it regeneration asserts a process that nobody has shown. The same caution applies to the word repair, which is examined in its own guide.
Lasting change
The material is intended to be broken down and cleared by the body over time, which is presented as an advantage. It is also the reason lasting change cannot be claimed: if the material clears, whatever it does is bounded by the period during which it is present, and nobody has published what happens at five years. No long-term data exists in the sense of a cohort followed for long enough to describe it, and the asset states that absence as no long-term data rather than as a reassurance.
An unproven claim is not a disproven one
These are different statements and they are routinely collapsed into one. A study too small to establish an effect does not show that there is none, and a mechanism demonstrated in a laboratory does not show that there is one. Where the evidence cannot settle a question, the accurate answer is that it is open.
Replacing a filler or an operation
Where the goal is volume, or where an under-eye shadow is cast by a fat pad, a treatment that changes skin quality does not do the job a filler or an operation does, and the reason is anatomical rather than commercial. A product that cannot occupy a space cannot restore a contour. A claim that a course of polynucleotide injections removes the need for an operation in that situation is not supported by the anatomy, let alone by a study.
Three claims to hold at arm’s length
- That the treatment regenerates tissue, stated as a finding rather than as a category.
- That long-term safety or long-term benefit has been established.
- That it removes the need for a filler or an operation where the cause is structural.
Where this page says a claim is not supported, it means the evidence does not carry it, and it does not mean the treatment does nothing at all.
Frequently asked questions
Has tissue regeneration been demonstrated?
No. Nothing published in living human skin shows that an injected polynucleotide causes new tissue to form in a way that could be measured against a control. Regeneration is a word from biology that has been adopted here as a category name, and a category name is not a finding.
Is long-term safety or long-term benefit established?
No. The material is intended to be broken down and cleared over time, which is presented as an advantage, and that is also why no long-term data exists: the class has not been in aesthetic use long enough for a cohort to have been followed. Unmeasured is not the same as reassuring.
Can polynucleotides replace a filler or an operation?
Not where the goal is volume, or where an under-eye shadow is cast by a fat pad. A product that cannot occupy a space cannot restore a contour, and the anatomical reason is straightforward. A claim that a course of injections avoids an operation in that situation is not supported by the anatomy, let alone by a study.
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.