Short answer: PDRN (polydeoxyribonucleotide) is a mixture of DNA fragments, purified from salmon-family fish, that has been used in medicine for tissue repair and is now a popular ingredient in Korean serums. In skincare it is best understood as a promising, still-emerging active: interesting science, with thinner evidence for serums than for the clinical uses it came from.
By the LAVOÙE team · Last updated 2026-09-22. General information, not medical or dermatological advice.
Where PDRN comes from
PDRN is a mixture of deoxyribonucleotides, the building blocks of DNA. The material used in medicine and cosmetics is extracted from the sperm DNA of salmon-family fish (rainbow trout and chum salmon are the sources named in the research), then purified to remove proteins and peptides. The fragments in the mixture range widely in size, roughly 50 to 1,500 kilodaltons, per the clinical review cited below.
That fish origin matters for two reasons: it is why PDRN is sometimes called "salmon DNA", and it is why it is not a vegan ingredient.
Why it ended up in skincare
PDRN was developed as a medicine, not a cosmetic. In tissue studies it has been linked to two mechanisms:
- Adenosine A2A receptor signalling. Activating this receptor is involved in how tissue manages inflammation and repair.
- The "salvage pathway". Damaged cells can reuse ready-made DNA building blocks instead of building them from scratch, which is useful when tissue is stressed.
Its clinical use has centred on wound healing and tissue repair, where it has been studied in conditions such as diabetic foot ulcers and burns. Those results come from medical uses, mostly injected, and they are the reason interest spread to skincare. Korean beauty adopted it early, and search interest has climbed quickly: one trend analysis shows "PDRN serum" rising from 18 to 99 on Google's 0–100 interest scale between March 2025 and March 2026.
Injectable vs. topical: the honest part
This is the piece most PDRN marketing skips.
| Injected PDRN (clinical) | Topical PDRN serum | |
|---|---|---|
| Who uses it | A clinician, as a medical procedure | You, at home |
| Evidence | Longest track record, strongest data | Thinner; more independent studies are needed |
| Reaches the skin's deeper layers? | Delivered directly | Limited: the molecules are large and carry a negative charge, which makes crossing the skin harder |
| What to expect | Clinical outcomes | Subtler, comfort- and barrier-focused effects |
What this does not prove: results from injected PDRN do not tell us that a serum will do the same. Independent reviews describe the strongest topical signals as supporting a stressed or freshly treated skin barrier, not as a stand-alone anti-ageing treatment. Anyone promising "injection results from a serum" is overselling.
What a PDRN serum can reasonably do
A well-made topical PDRN serum is best judged like any other supporting active: does it feel comfortable, absorb well, and fit into a routine you will actually keep up? The reasonable expectation is a calmer, more comfortable-feeling skin over weeks of consistent use, not a transformation. If your skin is already healthy, you may notice little; if it is easily stressed, you may notice more.
Concentration matters (and should be printed)
A label that says "contains PDRN" tells you almost nothing. The percentage tells you what you are buying. At LAVOÙE, every formula prints its actives:
- Ultra Light PDRN Peptide Serum uses 1% PDRN with a five-part peptide complex in a fast-absorbing, water-light base, built for daily use.
- PDRN Intensive Concentrate is our richest daytime-safe PDRN dose, designed for skin that has already settled into Ultra Light.
Both are made in Korea and come in a single 30ml size. If you are new to PDRN, start with the lighter formula and give it a few weeks before stepping up.
How to read a PDRN label
Because "salmon DNA" has become a marketing phrase, it helps to know what a trustworthy label looks like:
- A stated percentage. "1% PDRN" is information. "Contains PDRN" is not.
- The rest of the formula. PDRN is only one part of a serum. A thoughtful base (hydrators, peptides, barrier-supporting ingredients) is what makes it comfortable to use daily.
- Honest wording. Be wary of claims like "injection results", "reverses ageing" or "regenerates skin". Cosmetics are not allowed to promise medical outcomes, and a brand that does is telling you how much it trusts its own evidence.
- Where it is made. Country of origin and batch information show a brand is prepared to stand behind the product. Ours are made in Korea.
- The allergen note. A responsible label or product page states that PDRN is fish-derived.
What the trend numbers tell you (and what they don't)
Interest in PDRN has grown fast. One consumer-data analysis reports that combined Google, TikTok and Instagram interactions for PDRN reached tens of millions a month. Popularity is a signal that people are curious; it is not evidence that a serum works. That is why we keep the science section above separate from the shopping section below, and why we recommend judging any new active on how your own skin responds over several weeks.
How to use it and how to layer it
Follow the product's directions. As a general layering rule across the line, thinner, water-based serums go on first, and richer formulas after:
- Cleanse.
- On clean, slightly damp skin, apply your PDRN serum.
- Add other actives, for example Niacinamide Barrier Drops on days your skin feels reactive.
- Finish with a moisturiser, and SPF in the morning.
Vitamin C is a morning step used before SPF. Our guide to layering your routine has the full order. Patch test any new active on a small area for a couple of days first.
Who should be careful
- Fish or salmon allergy: PDRN is fish-derived. Avoid it or ask a clinician first.
- Pregnant or breastfeeding: check with your clinician before adding new actives.
- Broken, sunburnt or very irritated skin: wait until it has settled.
Stop using a product and see a professional if you get persistent redness, swelling or itching.
Frequently asked questions
Is PDRN vegan? No. It is derived from salmon-family fish. Plant-based alternatives exist, but they are different ingredients.
Is a PDRN serum the same as "salmon DNA injections" or Korean PN treatments? No. Injectable treatments are performed by clinicians and are medical procedures. A serum is a cosmetic product with a different delivery route and, as above, less evidence behind it.
Can I use PDRN with niacinamide, peptides or vitamin C? They are commonly layered. Put lighter serums first, use vitamin C in the morning before SPF, and introduce one new product at a time so you can tell what your skin likes.
How long until I notice anything? Give any new active several weeks of consistent use, and judge by how your skin feels, not by day-one results.
Sources
- Squadrito F. et al., "Pharmacological Activity and Clinical Use of PDRN," Frontiers in Pharmacology (PMC5405115): source, mechanism, molecular weight range, and clinical uses.
- "Plasma-Engineered PDRN: Surface Charge Neutralization and Nanosizing Enhance Uptake and Regeneration Potential" (PMC12473307): delivery limits of large, negatively charged PDRN.
- SkinCareful, "PDRN Skincare Topical Efficacy: The 2026 Evidence Audit": independent overview of the topical evidence.
- Spate, "PDRN in Skincare: What the Consumer Data Tells Beauty Brands": search-interest data.
Products mentioned: Ultra Light PDRN Peptide Serum, PDRN Intensive Concentrate, Niacinamide Barrier Drops.