What Is PDRN (Salmon DNA)?
PDRN, short for polydeoxyribonucleotide, is a soothing skin-conditioning ingredient made from fragments of DNA, typically sourced from salmon. In skincare it is used to calm the skin, support the barrier and give a plumper, glowier look, which is exactly the "pink glow" Medicube's PDRN Pink range is built around.
PDRN stands for polydeoxyribonucleotide: short fragments of DNA, usually taken from salmon. In a serum it behaves as a soothing, water-holding ingredient, and it does leave skin looking calmer and plumper. What a cream does not do is what the clinical papers describe, because those use injections that place it inside the skin. Judge a topical PDRN product on comfort and glow, not on the research headlines.
How PDRN is meant to work
PDRN is a mix of short DNA fragments. In medical and aesthetic settings, injectable PDRN has been studied for wound healing and skin recovery, where it is delivered into the skin. In a topical product it stays on the surface, so the realistic benefit is soothing, hydration and a temporary boost in radiance and bounce rather than a deep, clinical change. Medicube typically pairs it with pink peptides and niacinamide, which do a lot of the visible "glow and even tone" work alongside it.
What the evidence really shows (honestly)
This is where an independent guide can be more useful than brand copy. The strongest PDRN evidence is for injectable and clinical uses, not for creams. That does not mean topical PDRN is useless: it is a pleasant, well-tolerated, hydrating ingredient that many people find genuinely soothing and glow-giving. It does mean you should read claims of dramatic "regeneration" from a serum with healthy skepticism. Treat PDRN skincare as a comfortable, barrier-friendly glow step, and keep your heavy lifting to the basics that carry the most evidence: sunscreen, and a retinoid or vitamin C if your skin tolerates them.
Who PDRN suits
PDRN is a good match if your skin is dull, dehydrated or feels a bit compromised, and you want a gentle step that adds glow without irritation. It is one of the more sensitive-skin-friendly actives, and it layers easily under moisturizer. If your priority is firmness, look at collagen; if it is dark spots, look at vitamin C and kojic acid.
Best Medicube PDRN products
- medicube Capsule Cream with Salmon DNA PDRN Pink Collagen - 4.6/5
- medicube PDRN Pink Peptide Serum with Salmon DNA - 4.6/5
- medicube Jelly Gel Mask with Salmon DNA PDRN Pink - 4.6/5
- medicube Eye Serum with Salmon DNA PDRN & Pink - 4.5/5
See the full best PDRN roundup → or compare PDRN with the Collagen range →
Frequently asked questions
What is PDRN in skincare?
PDRN (polydeoxyribonucleotide) is a soothing, skin-conditioning ingredient made from fragments of DNA, usually sourced from salmon or trout. In topical skincare like Medicube PDRN Pink, it is used to calm the skin, support the barrier and give a plumper, more radiant look.
Is topical PDRN the same as PDRN injections?
No. Most clinical evidence for PDRN comes from injectable and medical uses, where it is delivered into the skin. A topical serum sits on the surface and cannot replicate that, so treat the glow and comfort from a PDRN cream as a nice cosmetic effect, not a clinical treatment.
Is Medicube PDRN vegan?
Most of it is not: Medicube's PDRN is mainly salmon DNA. The exception is its Rose PDRN line, which the brand describes as offering the same benefits as salmon PDRN with vegan ingredients. Both appear on the label as Sodium DNA, so check the product name: "Rose PDRN" is the plant version, "Salmon DNA PDRN" is not. "Pink Peptide" is a range name used on both, not a source.
Rose PDRN or salmon PDRN: what is the difference?
The source. Salmon PDRN is DNA fragments from salmon; Rose PDRN is the plant-derived version Medicube markets as vegan. The brand claims the same benefits for both. We cannot confirm that independently, and the published research on PDRN is on the salmon-derived kind, mostly injected rather than applied to the skin.
Is PDRN safe for sensitive skin?
Topical PDRN is generally well tolerated and is often paired with soothing ingredients, which makes it one of the gentler actives. As always, patch test first, especially if your skin is reactive.
Is PDRN a peptide?
No. PDRN is built from nucleotides, the units that make up DNA, while peptides are short chains of amino acids. They are different classes of ingredient. The mix-up is easy to make because Medicube sells its PDRN products under the name Pink Peptide, and those formulas do contain peptides alongside the PDRN. That is a range name, not a description of what PDRN is.
Is Sodium DNA the same as PDRN?
On an ingredient list, yes. PDRN is the name used in marketing and in the clinical literature; Sodium DNA is the INCI name that has to appear on the label. If you want to check that a product really contains PDRN rather than just advertising it, look for Sodium DNA in the ingredient list and note how far down it sits.
When should you use a PDRN serum?
After cleansing and any toner, before your moisturizer. It is a watery, low-irritation step that layers well, so it suits either a morning or an evening routine. If you also use a retinoid or an exfoliating acid, keep those to their own nights and use PDRN on the nights in between, or apply it afterwards as the soothing step.
Does salmon PDRN actually work?
It works as a hydrating, soothing ingredient, and that is the honest ceiling for a topical. Expect skin to look calmer and plumper while you are using it, largely from water held in the upper layers, and expect that to ease off if you stop. The dramatic repair and regeneration figures you may have read come from PDRN injected in a clinical setting, not from a serum.
We have not tested these products. This page explains what the ingredient is understood to do and where it sits in the Medicube range; the science links below are the evidence we relied on, and product ratings come from Amazon customers, not from us.
The science we relied on
Written by the Medicube Picks editorial team. Independent, not affiliated with Medicube. General information, not medical advice.