PDRN for the skin: what it is, how it works and what it does

What PDRN is

PDRN stands for polydeoxyribonucleotide: a mixture of low-molecular-weight DNA fragments. In most products it is obtained from purified salmon DNA —hence searches such as "salmon DNA"—, because its structure is very similar to human DNA and allows high-purity fragments to be obtained.

Before reaching aesthetic medicine, PDRN was studied in the field of wound healing and tissue repair. That background explains today's interest: aged skin, sun-damaged skin or skin undergoing procedures also needs to repair, and PDRN is associated with supporting that process.

How PDRN works

The literature describes two main pathways of action:

1. Activation of the adenosine A2A receptor

PDRN acts as an agonist of the adenosine A2A receptor, present in various cells. Activation of this receptor is associated with:

• Inflammation control, reducing pro-inflammatory mediators.
• Stimulation of angiogenesis, supporting the formation of small vessels that nourish tissue under repair.
• Support for fibroblast proliferation and matrix synthesis.

2. The nucleotide salvage pathway

The DNA fragments provide nucleotides and nucleosides that cells can reuse to synthesize their own DNA through the so-called salvage pathway, instead of making them from scratch. This is associated with support for cell renewal in tissues that need repair.

Overall, PDRN does not add volume or "fill": it acts as a regenerative active that supports the skin's own repair processes.

How it is used in aesthetic medicine

• Improving skin quality: hydration, texture, elasticity and radiance.
• Devitalized skin or skin with signs of photoaging.
• Recovery after procedures such as laser, peels or microneedling.
• Skin barrier care in sensitized skin.
• Complementing rejuvenation and revitalization protocols.
• Marks and uneven texture, in a non-inflammatory phase.

PDRN versus polynucleotides

Both belong to the same family and share an interest in regeneration. The choice depends on the formulation and the goal.

PDRN alone versus PDRN in multi-active formulas

PDRN can be used as the main active, but its effect is enhanced when it is part of a formula that works on several levels of the skin. In Ginseng + Centella Exosome, PDRN is part of a regenerating complex contained in the diluent:

• PDRN (60,000 ppm): 6 mg.
• Atelocollagen: 18 mg, collagen with lower allergenic potential that supports the matrix.
• Acetyl hexapeptide-8: 0.5 mg, a signal peptide associated with the appearance of expression lines.
• Palmitoyl tripeptide-1: 0.3 mg, a peptide associated with matrix synthesis.

That complex is joined by a brightening and antioxidant complex —tranexamic acid 10 mg, glutathione 8 mg, niacinamide 4 mg and carnosine 3.2 mg— and, in the freeze-dried powder, 15 mg of ginseng and centella asiatica exosomes that provide the cellular signal. The result is a skin booster that combines signal, regeneration and radiance in a single application.

How it is applied

• Intradermal micro-injections for precise distribution.
• Mesotherapy gun over larger areas.
• Microneedling or dermapen, with the product applied during the procedure.
• Skin infusion after compatible procedures, per assessment.

In Ginseng + Centella Exosome, the box contains 1 vial of 100 mg freeze-dried powder and 1 vial of 6 ml diluent, reconstituted at the time of use: the diluent is added slowly toward the inner wall of the vial, swirled gently without shaking, inspected and used immediately. The vial is single-use.

What results to expect

• First applications: more hydrated skin with a better overall look.
• Over the protocol: finer texture, greater elasticity and a more even tone.
• After procedures: a more comfortable recovery.

Like any regenerative active, PDRN builds results progressively; frequency and number of sessions are set by the practitioner based on the skin assessment.

Precautions and contraindications

• For use only by trained professionals.
• Do not use in people with known hypersensitivity to any component; it is prudent to ask about fish or marine-product allergies.
• Do not use if the container is damaged, the seal broken or the product expired.
• Avoid contact with eyes and mucous membranes.
• Do not apply to skin with active infection, intense inflammation or open lesions unless the product and protocol are expressly validated for it.
• Do not mix with other products or use solvents other than the one specified.
• Stop and assess in case of any unexpected or persistent reaction.

How to assess a PDRN product

Because PDRN has become so popular, it is worth checking a few points before choosing a product:

• Stated concentration: a serious product states how much PDRN it contains, not just that it includes it.
• Purity and origin: the DNA must be purified; the technical data sheet should identify the source.
• Accompanying actives: PDRN on its own supports repair; combined with peptides, atelocollagen, exosomes and antioxidants, it works on more goals at once.
• Presentation and stability: if it is freeze-dried, how it is reconstituted and how long it can be used afterwards.
• Traceability: lot, expiry, sealed packaging and authorized distribution.

PDRN in combined protocols

PDRN fits into several points of a treatment plan:

• With microneedling: as part of the product applied during the procedure, adding regeneration to the mechanical stimulus.
• After laser or a peel: during the recovery phase, to support barrier repair.
• Before a biostimulator: to improve skin quality and prepare the tissue, in the same way a repair protocol is used before biostimulation in the combined protocol.
• As maintenance: spaced sessions to sustain the skin quality achieved.

The key is to define in each case what role it plays: repair, preparation or maintenance. That definition guides frequency, technique and the combination with other actives, and it helps explain to the patient why it is being applied at that point in the plan. Recording that role in the clinical file also makes it easier to review, at the next visit, whether the booster did what it was meant to do.

When PDRN is used for preparation, a short cycle before the main treatment is usually enough; when it is used for maintenance, the priority is consistency over time rather than intensity. Keeping those two logics separate prevents over-treating the skin and helps control the overall cost of the plan for the patient.

Common myths about PDRN

• "It's DNA that changes your DNA." No. The DNA fragments are used as a source of nucleotides and as a signal through receptors; they do not modify the patient's genetic material.
• "It's a filler." It adds no volume; it works on skin quality.
• "It works in a single application." Some hydration changes are noticed early, but improvement in skin quality is progressive.
• "All PDRN is the same." Purity, concentration and the actives that accompany it make important differences between products.

How to explain it to the patient

"PDRN is a repair active: it gives your skin materials and signals to regenerate better. It does not change your features; it improves the quality of your skin from within."

If the product also combines exosomes and brightening actives, it helps to explain that several goals are being worked on at once: repair, texture and tone.

Summary

PDRN is a set of purified DNA fragments, usually from salmon, associated with tissue repair through the adenosine A2A receptor and the nucleotide salvage pathway. In aesthetic medicine it is used to improve skin quality and support recovery after procedures, and its effect is enhanced in multi-active formulas that add exosomes, peptides, atelocollagen and antioxidants.

Discover Ginseng + Centella Exosome, review what a skin booster is or contact our authorized distributors.

Frequently asked questions