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Topical cosmetics and devices only — not for injection

Cellular Sequence

Peptide Encyclopaedia

TGA approvedCosmetic

PDRN (polydeoxyribonucleotide)

Also known as Salmon DNA fragment mixtures.

Cosmetic peptide / protein ingredient for education. Cellular Sequence does not sell this as an injectable. Finished topical products, if any, are labelled as cosmetics.

At-a-glance profile

Classification
DNA fragment mixture (not a peptide)
Approval status
Cosmetic
Research status
Investigational / reference listing.
Molecular formula
Insufficient reliable evidence identified.
Molecular weight
Insufficient reliable evidence identified.
Sequence
Depolymerised DNA used in some skin procedures and cosmetics.
Primary biological target
Insufficient reliable evidence identified.
Half-life
Insufficient reliable evidence identified.
Routes investigated
Insufficient reliable evidence identified.
Human evidence level
C — Limited or early human evidence

What is it?

A polynucleotide skin ingredient/procedure class, often listed next to peptides. Not sold as an injectable kit here.

Mechanism of action

Proposed A2A receptor / wound-healing narratives in aesthetic literature.

Device/clinic context in some countries; mail-order vials are not that setting.

What is it being studied for?

  • Aesthetic dermatology literature of mixed quality

Investigational findings are not proven clinical benefits unless an authority has labelled that indication.

Evidence level

Overall human evidence grade: C · Limited or early human evidence

Human research

Mostly aesthetic series, not TGA-standard drug approval for anonymous vials.

Preclinical research

Animal, cell and in-vitro findings are listed separately from human effects.

Nucleic-acid fragment biology.

Doses reported in published research

This section does not provide personalised medical dosing. Values are those reported in papers or protocols. Animal mg/kg doses are not converted to human doses.

Doses reported in human studies

Insufficient reliable evidence identified.

Preclinical / animal study dosing

Insufficient reliable evidence identified.

Pharmacokinetics

Reliable human pharmacokinetic data were not identified for this encyclopaedia entry, or are limited to product information for approved presentations.

Safety

Injection-site reactions.

Unknowns. Absence of a published harm signal is not evidence of safety.

Contraindications. Not a home injectable.

Regulatory status

Device/cosmetic/medicine status varies; research vials are not sold.

Cellular Sequence does not sell this as a vial, tablet, oil, or injectable. Educational encyclopaedia listing only.

Citations

  1. [1] Encyclopaedia note

    Encyclopaedia note

For educational and research reference only. This page summarises published scientific literature and does not constitute medical advice, prescribing information or a recommendation to use an investigational compound. Research doses shown describe doses reported in published studies and are not personalised dosing instructions.

Last reviewed 2026-09-13. Research areas: Skin & Hair · Compare peptides