Polynucleotides (PDRN/PN)

PDRN · PN · polidesossiribonucleotide

Skin biostimulation and regeneration: hydration, skin quality, support to healing.

TypeInjectable / aesthetic procedure

The grade answers: What does the human evidence support for: Skin biostimulation?

Representative monomer (dAMP)

Grade

Insufficient

The grade rates evidence quality — it is not advice to take or buy.

Class: Regenerative
Primary use: Skin biostimulation
Evidence strength: low
Last reviewed: 2026-06-01

Professional use

Administered in a clinical or professional setting, not sold at retail. No commercial offers on this page.

Failed to deliver

Attention

Evidence

How it's sold: Skin biostimulation that regenerates tissue from within.
What the studies show: Heavily marketed in aesthetic clinics. Independent human evidence is far thinner than the promotion implies, which is why this entry is graded F rather than left ungraded.

The attention level is our editorial estimate of public interest, not a measurement. Evidence is derived from the A–F grade. These two diverge sharply here: it is talked about considerably more than it has been shown to do.

Bottom line

Everywhere in aesthetic clinics, thin in independent evidence. Most studies are small, short and industry-linked with surrogate endpoints — so today it earns an F, and the grade can rise the day solid independent RCTs land.

Review in progress: the grade will be assigned once the source analysis is complete.

What the evidence says

Heavily marketed in aesthetics, but the independent evidence is thin: most studies are small, short, heterogeneous in protocol and often industry-sponsored, with surrogate endpoints. No solid independent RCTs support the strongest claims — hence grade F until better data exist.

Key studies

[1]
Literature on polynucleotides and skin (PubMed search) · review
Starting point for the ongoing review; the grade will be assigned at closure.
Open on PubMed ↗

See all studies on PubMed ↗

Scoped PubMed search, not a curated bibliography: the individual PMIDs for this entry have not yet been verified one by one. For that reason it is not used to support a high grade and is awaiting review.

Mechanism

DNA fragments thought to act as adenosine A2A receptor agonists, stimulating fibroblasts, collagen synthesis and angiogenesis; a local nucleotide 'salvage' effect.

Safety

Generally favourable profile in aesthetic use; transient local events (erythema, swelling). Medical procedure: professionals only.

Dosage context

Injectable protocols vary by concentration and number of sessions; no universally validated standard in independent literature.

Examples of application

Delivered as in-clinic injectable treatments by professionals.
Marketed for skin biostimulation; independent evidence is thin.
A medical/aesthetic procedure, not an at-home product.

From the field

It's one of the most aggressively marketed molecules in aesthetics right now. Knowing how it's sold, the gap between the hype and the independent evidence is wide — that's exactly why it gets an F today, not a pass. The grade can rise the day solid independent RCTs land.

Follow this entry

We'll tell you if the grade for Polynucleotides (PDRN/PN) changes.

One review a week: new evidence, grade changes and what was updated. No hype, no promotions disguised as news.

How we assign grades → Method