PDRN, short for polydeoxyribonucleotide, is made of DNA fragments; newer versions come from plants or bacteria. Clinics inject it to support skin repair, and it has moved into serums and creams. Injection and wound studies look promising, but evidence for PDRN applied on skin is still early and small.
- Helps with
- fine lines, skin recovery after procedures, loss of firmness, dullness
- Evidence
- Limited. A 2026 review found 7 small randomized trials, mostly injections and wounds; topical data come from early studies.
- Typical strength
- 0.1% in the one controlled topical trial cited here
- Works well with
- moisturizer, daily sunscreen
What does PDRN do for skin?
PDRN became known as an injection offered in skin clinics, used to help skin recover and look fresher. Serums and creams now borrow the name for the same promise: smoother fine lines, better bounce, and faster calming after a laser or peel.
A 2026 review of randomized trials found 7 studies with 183 people in total, covering rejuvenation, scars and wounds. PDRN and related polynucleotides improved wrinkle measures, scar quality and healing, with the clearest benefit in wound healing. No serious side effects were reported. The reviewers were frank about the limits: “the evidence base remains limited by small sample sizes, heterogeneous treatment protocols, and variable outcome measures.”
Does PDRN work in a cream or serum?
That is the newer, less proven part. DNA fragments are large, and skin generally keeps out molecules above 500 daltons, a unit of molecular size. A 2026 study tested a medium-length PDRN made to get in: imaging showed it reached the living layer of skin in lab models and in a small human test. In a 28-day split-face trial, a 0.1% PDRN eye cream improved crow’s feet, skin thickness and under-eye bags about twice as much as a 0.1% retinol cream. That is one study of one specific PDRN, so it does not prove that every PDRN product works the same way.
Is PDRN used after facial treatments?
Some clinics use it that way. A 2026 report described 8 women, aged 28 to 68, who used a plant-derived PDRN serum after lasers, microneedling and peels as part of their aftercare. It is a case series without a comparison group, so it shows how the serum is used rather than how well it works.
How long until you notice a difference?
The topical trial measured results at 28 days. Give a PDRN product at least four weeks.
How do you use PDRN?
As a serum or cream after cleansing, morning or night, then moisturizer, with sunscreen during the day. Products vary a lot in the type and length of PDRN they contain, which matters for whether it gets into skin.
Who should be careful with PDRN?
Injected PDRN is a medical procedure and belongs with a doctor. For topical products, the studies above reported good tolerance; patch test if your skin reacts easily, and check the label for the PDRN source if you avoid animal-derived ingredients.
- Alhussain AM, et al. Polynucleotides and polydeoxyribonucleotides for skin rejuvenation, postoperative scar prevention, and wound healing: a systematic review of randomized clinical trials. Cureus. 2026.
- Ye R, et al. Topical medium-length PDRN enhances dermal extracellular matrix repair in photodamaged skin via PI3K-Akt/TGF-β-regulated pathways. PLoS One. 2026;21(7):e0350905.
- Wu Y, et al. Real-world cases using phyto polydeoxyribonucleotide (PDRN) serum. J Drugs Dermatol. 2026.
- Bos JD, Meinardi MM. The 500 Dalton rule for the skin penetration of chemical compounds and drugs. Exp Dermatol. 2000;9(3):165-9.
Editorial content, not medical advice.