Every so often an in-clinic treatment becomes popular enough that a topical version arrives shortly after. Spicules followed microneedling. PDRN is following polynucleotides, and it's moving fast: from a Korean specialism to a fixture on Western shelves inside a couple of years.
It is also one of the ingredients shoppers are now asking about by name, which makes it worth understanding properly. Here is what PDRN is, what it does, where the open question sits, and what the trend means if you sell skincare.
What are polynucleotides?
Polynucleotides are fragments of DNA, typically derived from salmon. In clinic they are injected into the skin to stimulate its own regeneration mechanisms.
That mechanism is the reason for their popularity. Unlike filler, which is designed to remain in the skin and produce its effect by physically staying there, polynucleotides work by prompting the skin to trigger natural mechanisms that decline with age. For a consumer base that has become noticeably more cautious about injectables, "works with your skin" is a compelling proposition, and the visible results have done the rest.
So what is PDRN?
PDRN stands for polydeoxyribonucleotide. It is the topical expression of the same idea: the ingredient applied to the skin rather than injected into it.
It originated in Korean skincare, where the category has grown quickly, and has since been adopted firmly by brands across the globe. If you have noticed PDRN appearing on several launch calendars at once, that is why.
How PDRN works in skincare
In a topical formulation, PDRN is used to support hydration, overall skin health, and the skin's regeneration mechanisms. The positioning is closer to barrier and recovery ingredients than to an active that produces a rapid, visible change.
There is a genuine technical challenge, and it is worth being straightforward about it. PDRN is a large molecule, and large molecules do not penetrate the skin easily. Whether it reaches beyond the surface in a meaningful way depends heavily on the formulation around it. This is why brands working with PDRN are investing in delivery systems rather than simply adding it to an existing base, and why two products with the same ingredient on the label are not necessarily comparable.
For anyone advising customers on it, that is the honest framing: promising ingredient, real mechanism in clinic, and a formulation-dependent question mark over topical delivery that the category is actively working on.
Where PDRN is showing up
Three launches give a fair picture of how differently brands are approaching it.
Medik8 Exo-Prismatic PDRN Serum
Medik8's formulation uses a prismatic delivery system designed to change the shape of the PDRN molecule so it can penetrate more effectively, which tackles the absorption problem head-on. The claims focus on skin luminosity and overall barrier health, supported by some striking before and after imagery.
Anua PDRN Hyaluronic Acid Capsule 100 Serum
Anua is one of the K-beauty names driving the current wave of interest, and its PDRN range includes both a serum and a cream. Both hold reviews of 4.6 stars and above across major UK retailers including Boots, Sephora and Lookfantastic, which is a reasonable signal that the formulations are pleasant to use as well as well marketed.
Rodial Salmon DNA Water Oil
Rodial has taken its characteristically direct approach to naming and launched PDRN under a Salmon DNA range, combining the ingredient with its top-selling water oil formula, alongside sheet mask and eye mask formats.
The bigger picture for beauty brands
PDRN is a good illustration of a wider pattern. An ingredient arrives from clinic or from Korea, gains momentum through social, and starts appearing in search and in consultations well before most brands have anything to say about it. Shoppers then ask the obvious questions: what is it, does it work, is it right for my skin, how does it compare to what I already own.
Those questions get asked somewhere. If your product pages and your on-site advisor cannot answer them, they get asked of a general-purpose AI or a competitor who can. Ingredient literacy in your own content is not an editorial nicety; it is increasingly how a brand stays in the consideration set.
It also cuts the other way. The ingredients shoppers ask about in consultations are an early read on demand, and they tend to surface before the sales data confirms them.
Frequently asked questions
What is PDRN in skincare?
PDRN stands for polydeoxyribonucleotide, a topical ingredient derived from DNA fragments, usually from salmon. It is the at-home counterpart to polynucleotides, which are injected in clinic.
What does PDRN do for skin?
It is used to support hydration, overall skin health and the skin's own regeneration mechanisms, positioning it closer to barrier support than to a fast-acting active.
Is PDRN the same as polynucleotides?
They are closely related. Polynucleotides are the injectable treatment performed in clinic. PDRN is the topical ingredient inspired by it, applied to the skin rather than injected.
Does topical PDRN actually penetrate the skin?
This is the open question. PDRN is a large molecule and may not penetrate efficiently on its own, so brands are combining it with delivery systems to improve absorption. Results depend on the formulation, not just the presence of the ingredient.
Who is PDRN suitable for?
It is generally positioned for people focused on hydration, barrier health and skin recovery. As with any newer ingredient, suitability depends on the rest of the routine and on individual sensitivity, which is exactly the kind of question worth answering at the point of purchase.
Answer the ingredient questions before they leave
Our full ingredient spotlight, along with this quarter's data and contributor pieces, is in the September 2026 Renude Insights report. You can read the September 2026 Renude Insights report here. To see how an expert-built advisor answers ingredient questions across your range, book a demo.
