log 005_

What Is PDRN? Salmon DNA Skincare, Decoded

The salmon-DNA ingredient all over your FYP, explained in two minutes: what it is, where it came from and what it actually does in a skincare product.

Oct 25, 2026
2 min read
by Pretty Coded

PDRN = DNA fragments, usually purified from salmon.

On the ingredient list it's called Sodium DNA.

In skincare it helps skin hold water and look smoother. The viral clinic results come from injections, not jars.

PDRN is all over your FYP right now: serums, sheet masks, "salmon DNA" facials, balm sticks. Most of it comes with a big font and very little explanation. Here's the two-minute version.

So what is PDRN?

PDRN stands for polydeoxyribonucleotide. Long word, simple idea: chains of DNA fragments, most often purified from salmon milt. It's a refined ingredient, not fish oil and not an extract, and no, it doesn't smell like anything.

Why it's suddenly everywhere

PDRN started out in medicine, then became a staple of South Korean aesthetic clinics, where it's injected by professionals. That's the "salmon DNA facial" you've seen on TikTok. K-beauty brands brought it into topical skincare, and now it's on everything from ampoules to twist-up sticks.

If a jar promises clinic results, it's selling you the injection story at a cosmetic price.

The catch: the dramatic before-and-afters come from injections. A product you put on your face works on the surface of the skin, and it should be judged like skincare.

What it actually does in a skincare product

In a cream, serum or balm, sodium DNA works as a skin-conditioning ingredient. It helps skin hold on to water and leaves a thin, smooth film on top. What you can realistically expect:

skin that feels moisturized, not tight
a smoother, plumper, more even-looking surface
a soft, dewy finish, especially in an anhydrous balm

Woman in a pink teddy hoodie holding the Pretty Coded PDRN balm stick on a rainy city street — // field test: one swipe, no mirror

Woman in a pink teddy hoodie holding up the pink PDRN balm stick on a city street — // field test: one swipe, no mirror

How to spot PDRN on a label

You'll rarely see the word "PDRN" in the ingredient list. The names to look for:

Sodium DNA: the most common INCI name for salmon PDRN
Hydrolyzed DNA: a related, more broken-down form
Polynucleotides (PN): a close cousin, mostly seen in clinics

Seeing algae or plant extracts sold as "PDRN"? That's a different ingredient. We break it down in Salmon PDRN vs. plant PDRN.

The number nobody prints

PDRN is measured in parts per million (ppm), and most brands leave the number off the box. That makes two "PDRN" products impossible to compare. Here's why that matters: PDRN ppm, explained.

Pink Pretty Coded PDRN balm stick held out toward the camera — // ours is printed on the stick: 2,000

Quick answers

Does it smell like fish?

No. The DNA is purified before it ever reaches a formula.

Is salmon PDRN vegan?

No. It's derived from salmon. If you avoid animal-derived ingredients, skip it.

Who should be careful?

If you have a fish allergy or very reactive skin, check with your doctor and patch test first.

Our take

We built our first product around one rule: print the dose on the box. The PDRN Collagen Multi Balm has 2,000 ppm of salmon-derived sodium DNA, taken from the manufacturer's documented composition sheet, with the salmon origin confirmed in writing by the raw-material supplier. Ask us and we'll send you the sheet.

keep reading

all logs →