What is PDRN? The Complete Australian Guide to Salmon DNA Skincare

Updated April 2026 · about a 9 minute read

PDRN is the quiet, cumulative ingredient behind that calm, hydrated glow.

If you have spent any time in the Korean skincare rabbit hole lately, you have probably bumped into three letters that sound more like a chemistry exam than a beauty ingredient: PDRN. And then, somewhere nearby, the phrase “salmon DNA” which, if we are being honest, sounds like something you would find on a sushi menu rather than in a serum.

So let us clear it up. This is the complete, plain English guide to what PDRN actually is, where it comes from, what it does, and how Australians can use it at home. No hype, no jargon, no lofty medical claims, just the facts, the context, and a bit of honesty about what you should and should not expect. If you would rather skip straight to trying it, browse our PDRN serum collection.

First things first: what does PDRN stand for?

PDRN is short for polydeoxyribonucleotide. It is a mouthful, so everyone just says “PDRN”. In the simplest terms, it is a fragment of DNA, specifically short chains of the building blocks that make up the genetic material inside living cells.

The version used in skincare is extracted and purified from salmon DNA. That is why you will often see the terms “PDRN” and “salmon DNA skincare” used almost interchangeably. They are pointing at the same thing from different angles: one is the technical name, the other is the shorthand.

Why salmon?

This is the question everyone asks first, and it is a fair one. The answer is surprisingly simple: salmon DNA is structurally very similar to human DNA, similar enough that when researchers were looking for a biocompatible source of DNA fragments, salmon turned out to be a remarkably clean match. It is abundant, sustainable (usually sourced as a byproduct of the food industry), and the extraction process is well established.

It is worth saying: no salmon is harmed specifically for skincare. The raw material comes from the same fisheries that supply food, and PDRN skincare uses what would otherwise be discarded.

What does PDRN actually do in a skincare product?

Here is where we need to be careful, because this is where the internet gets very excited and the regulators get very nervous. In Australia, cosmetics are not allowed to claim they heal, repair or regenerate anything; those are therapeutic claims that require a completely different category of registration.

What we can say, based on how PDRN is formulated into skincare, is that it is valued for:

• Helping support the look of hydrated, plump skin. PDRN is a water loving molecule, and when it is layered into a serum it holds moisture at the surface of the skin beautifully.
• Supporting the appearance of a calm, even complexion. It is a quiet ingredient: no tingle, no sting, no flush. That is why it has become popular with people whose skin does not get along with retinoids or strong acids.
• Playing well with others. PDRN layers easily underneath other actives, sunscreens and moisturisers without pilling or reacting.

If you are looking for dramatic, overnight transformations, that is not what PDRN is. It is a slow, cumulative, gentle ingredient. The people who love it are usually people who have been burnt (sometimes literally) by harsher routines and want something that just gets on with the job.

The people who love PDRN are the ones who got tired of drama and just wanted their skin to feel calm.

Injectable vs at home: a very important distinction

This trips a lot of people up, so it is worth spelling out clearly. In Korea and Australia, you will hear about PDRN in two completely different contexts:

1. Injectable PDRN treatments (the most famous brand being Rejuran). These are administered by trained clinicians in clinics. They are not cosmetics; they fall under therapeutic goods and are regulated accordingly. We do not stock Rejuran or any other injectable, and nothing on this site is intended to be injected. Ever. Please.
2. At home PDRN skincare: serums, ampoules, masks and capsules that you apply to your skin at home or during facial treatments. This is the category we work in, and this is what the rest of this guide is about.

If you want a side by side breakdown of how Rejuran (injectable) compares to two of the products we do stock, we have written a full post on it: Rejuran vs CureNex vs VITARAN salmon DNA skincare compared.

How do you actually use PDRN at home?

There are really only two scenarios, and most Australians will use one or the other (or both, depending on whether they see an aesthetician).

1. At home, in your daily routine

This is the most common. A PDRN serum or capsule goes on cleansed skin, before your moisturiser, once or twice a day. That is it. It is the apply and forget kind of product. It works beautifully on its own or with your at home skin tool (a roller, stamp or pen). Our at home hero is VITARAN, a Korean formulated formula that pairs PDRN with exosomes and NMN in single use capsules. If you have never used PDRN before, this is the gentle, low commitment way in.

2. During a treatment or facial

The other use case is professional. Aestheticians and trained skin therapists apply PDRN serums onto freshly treated skin, which can help the product sit where it needs to. This is the category CureNex sits in; it is designed specifically for professional treatments. A quick but important note: an at home skin tool should be used at a gentle depth on clean skin, and a deeper professional treatment should only be done by a trained therapist in a clean, regulated setting.

Who is PDRN actually for?

Honestly? Most skin types. PDRN’s whole reputation rests on being the opposite of harsh; it is the ingredient people reach for when they want results without the drama. It tends to suit:

• People with dry, dehydrated or dull looking skin
• People whose skin has become reactive or sensitised from overusing actives
• People in their late 20s and beyond who are thinking about early preventive care
• People who have just had a facial treatment and want something gentle to layer on afterwards
• People who live in climates that swing between humid and dry (hi, Australia) and want a reliable hydration layer

It is probably not the first thing you reach for if you are dealing with active, severe acne; that is a different conversation and usually a medical one. But as a supporting ingredient in a calm, consistent routine? Hard to beat.

How soon will you see results?

This is the question nobody wants to hear the honest answer to, but here it is: PDRN is a slow ingredient. Most people start to notice a difference in the look and feel of their skin (softer, plumper, more even in tone) after about 3 to 6 weeks of consistent daily use. Before that, it just feels nice, like a really good hydrator. If anyone is promising you overnight miracles from a serum, be sceptical.

Is it safe? Is it regulated?

The PDRN products we stock are cosmetic products formulated and manufactured in Korea under that country’s cosmetic regulations, and imported into Australia in compliance with Australian cosmetic standards. They are not therapeutic goods, and they are not making therapeutic claims. If you have a specific medical condition, are pregnant or breastfeeding, or are on prescription skincare, please check with your GP or dermatologist before starting anything new, as you would with any new skincare.

Where to start

If you want to try PDRN, the easiest entry point is a serum or capsule. Browse the PDRN serum collection, or start with the VITARAN range for an everyday capsule routine. Not sure which brand? Compare them in our PDRN serum showdown.

CureNex Salmon DNA Skin Booster

Gentle Korean PDRN and peptides. Works on its own or with your at home skin tool. In stock, Gold Coast.

from $79 AUDAfterpay available · free shipping over $150
Shop PDRN serums →

Go deeper: the rest of the cluster

This page is the overview. If you want to dive into a specific question, these are the other pieces we have written:

• PDRN vs hyaluronic acid: which hydrator actually belongs in your routine?
• Can you use PDRN at home without a treatment?
• PDRN and sensitive skin: a gentle guide for reactive complexions
• The science of salmon DNA: why fish, and what your skin actually does with it
• How often should you use PDRN? An Australian routine guide
• Treatment aftercare: what to do in the 48 hours after your appointment
• Rejuran vs CureNex vs VITARAN: the full comparison
• What are exosomes in skincare? An Australian guide
• Exosome treatment vs exosome therapy explained
• Derma stamp: the complete Australian guide
• PDRN serum showdown: Vitaran vs Medicube vs Dr. Drawing vs Rejuran

Frequently asked questions

Disclaimer: the products discussed here are cosmetics, not therapeutic goods. They are not intended to diagnose, treat, cure or prevent any disease or condition. Rejuran is referenced for educational context only; it is an injectable administered by trained clinicians and is not stocked by Salmon DNA Australia. Individual results vary. Not suitable for those with a fish allergy.