In short. PDRN (polydeoxyribonucleotide) is a set of purified DNA fragments, usually obtained from salmon: that is why it is an ingredient of marine origin. On the label, in the INCI list, it appears as Sodium DNA. It comes from the medical field, where it is also used in injectable form, and it has moved into cosmetics in serums and creams applied to the skin. In a cosmetic it works on the appearance of the skin, and its value lies in consistent use: applied regularly, it helps the skin look firmer, more elastic and more even. It is not a medical procedure and does not replace its effects.
There is an ingredient people talk about more and more in skincare. You find it in beauty salons, aesthetic medicine clinics and dermatologists' offices. It is called PDRN — and until recently it was reserved for professionals.
Today it has entered cosmetics. But not every product that mentions it really knows what to do with it.
If you landed here after considering a treatment at a doctor's office, two numbers matter before you decide: what a course of skin biorevitalization really costs and which side effects it can involve.
This guide is for anyone who wants to understand — really — before choosing.
What is PDRN: the definition, unfiltered
PDRN stands for polydeoxyribonucleotide: purified DNA fragments, usually from salmon. In cosmetics it appears in the INCI list as Sodium DNA. It is an active ingredient studied in dermatology and gradually adopted by advanced cosmetics. If you are wondering how it relates to the polynucleotides aesthetic doctors talk about, the difference is subtler than it seems.
One distinction right away: in a cosmetic, PDRN is applied to the surface of the skin. It is not a medical procedure, and its value lies in consistent use, not in an immediate effect.
How PDRN works on the skin
With age, skin looks thinner and less firm, and it finds it harder to recover after a day of stress, sun or cold. Wrinkles are not only expression lines: they are also the visible sign of skin that is changing.
Applied consistently in a cosmetic formula, PDRN helps the skin look firmer, more elastic and more even. It works on the appearance of the skin, day after day.
The result is not immediate: it is gradual and depends on consistency.
What it helps with, with consistent use:
- Skin that looks visibly firmer and more elastic
- A smoother, more even texture
- Better-hydrated skin
- Support for a renewed-looking complexion
Who PDRN is for
PDRN is particularly suited to anyone starting to notice signs of ageing on their skin: loss of firmness, deeper expression lines, a duller complexion, a less even texture.
It works well on:
- Mature skin (ages 35–65) looking for a science-backed approach
- Tired skin or skin that has lost its vitality
- Sensitive skin that does not tolerate retinol — PDRN does not bring photosensitivity issues
- Anyone who wants to prevent before the signs become visible
PDRN in cosmetics: what to expect (and what not to)
What to expect:
- With regular use, morning and/or evening, skin that becomes progressively more even and better hydrated, with a smoother texture. Timing depends on your skin and on consistency: the point of the ritual is continuity, not a result on a deadline
- The effects build up over time, and the formula matters: PDRN works better together with complementary actives such as exosomes and peptides
What not to expect:
- Effects within 24 hours
- The equivalent of an in-clinic treatment after the first application
How to choose a PDRN product that really works
When you assess a serum or cream with PDRN, look at these points:
- Is it really in the INCI? Look for Sodium DNA in the ingredient list, and check its position.
- Which other actives is it paired with? PDRN works better in synergy with exosomes, peptides or other renewing actives.
- Where is it made? A laboratory that follows good manufacturing practice for cosmetics (GMP, ISO 22716) offers verifiable production standards.
- Is the positioning honest? Be wary of anyone promising immediate results or results comparable to injections.
The full criteria are in our guide to choosing a PDRN serum.
PDRN at ELAXO: our choice
At ELAXO we chose PDRN as the hero ingredient of our line for a precise reason: it is an active designed for consistency, working on the appearance of the skin over time rather than on an immediate effect. Ours is of marine origin, so the products are not suitable for vegans.
In the N°1 PDRN Face Serum, Sodium DNA is in eighth position in the INCI list and works together with Centella asiatica exosomes and Hexapeptide-12. In the N°2 PDRN Face Cream it is in tenth position, paired with watermelon and grapefruit exosomes, smoothing Pentapeptide-17 and helichrysum extract.
No ingredient is there just to make up the numbers: every active has a precise reason to be there. Serum and cream are used one after the other, also together in the Ritual.
Want to know every active in detail? Visit the Active Ingredients page.
