PDRN Serum from Salmon DNA: Does it really contain salmon sperm?

Written by: Eva Juric, founder of @myskinisgettingbetter and MYSK Online Beauty Store

More about me and my journey with acne: About me

Briefly Explained

Yes, classic PDRN is often derived from the DNA of salmon or trout – specifically from purified DNA fragments originally sourced from the milt (sperm cells) of these fish.

No, you're not just applying "raw salmon sperm" to your face. The raw material is processed, purified, and prepared for use in cosmetics.

Not all PDRN is of animal origin. There are now plant-based and biotechnologically produced alternatives.

Important: An at-home PDRN serum is not the same as a PDRN or polynucleotide injection performed in a clinic.

If you have a fish allergy, very reactive skin, or are unsure about the origin, you should check the manufacturer's information and start with extra caution.

I had to read "salmon DNA" twice too

When I first saw PDRN everywhere on TikTok and in Korean skincare routines, I initially thought: Okay, a new regenerating active ingredient. Sounds interesting.

And then came the phrase: "That's that salmon sperm serum."

Of course, I had questions.

Is there really salmon sperm in it?
Is it hygienic?
Can it change my DNA?
Is PDRN even vegan?
And does a serum really work the same way as the treatments known from Korean beauty clinics?

In the past, I probably would have just ordered the next hyped product and read up on it later. Today, it's the other way around for me.

Before I put anything new on my skin, I want to understand:

What is really in it?
Where does the active ingredient come from?
What effects are realistic?
And which statements are mainly marketing?

That's why today we're going to look at PDRN without the hype, but also without unnecessary panic.

What exactly is PDRN?

PDRN stands for Polydeoxyribonucleotide.

Simply put, these are short DNA fragments. PDRN has been studied for some time in medical and dermatological fields, especially in connection with tissue repair, wound healing, and regenerative processes.

Only later did the active ingredient become a major skincare trend.

In cosmetic products, you can find PDRN today, for example, in:

Serums, Essences, Toners, Creams, Hydrogel Masks, Eye care

On the ingredient list, PDRN can appear as "Sodium DNA", among other things. However, the exact origin is not always clearly identifiable from this name alone.

If it is important to you whether the product is of animal or plant origin, you should therefore also check the product description or the brand's information.

Is PDRN really salmon sperm?

The honest answer is: classical PDRN is often derived from the DNA of salmon or trout sperm cells.

At first glance, this naturally sounds less glamorous than "regenerative DNA technology."

But it's important to distinguish between the raw material and the finished cosmetic ingredient.

A PDRN serum does not contain untreated fish material. The DNA is extracted, purified, filtered, and processed into a cosmetically usable ingredient.

What ends up in the formulation are purified DNA fragments – not the raw source material.

It's similar with many other cosmetic ingredients: the original source sometimes sounds unusual, while the finished ingredient has been technically processed and purified.

Why is salmon DNA used specifically?

Salmon and trout DNA is traditionally used because it can be obtained and processed in a relatively pure form.

PDRN from fish has also been researched for longer in regenerative medicine than many newer plant-based alternatives.

However, this does not automatically mean that every product with salmon PDRN is perfectly formulated.

And it also doesn't mean that a product works better just because "Salmon DNA" or a high PPM number is prominently displayed on the front of the packaging.

The entire formulation is decisive.

A good PDRN product should not only contain a trending active ingredient but also substances that suit the respective skin, for example:

Glycerin and hyaluronic acid for moisture

Panthenol and Cica for soothing

Ceramides to support the skin barrier

Peptides for a smoother skin feel

a suitable cream that keeps moisture in the skin

Can PDRN change my DNA?

No. A cosmetic PDRN serum does not rewrite your human DNA.

The term "DNA" sounds very technical and therefore understandably causes uncertainty. However, the DNA fragments in a cosmetic product do not simply become part of your genetic material.

Rather, PDRN is being studied for potential signaling and repair mechanisms.

So you don't have to worry that a PDRN serum will change your genes or permanently incorporate "fish DNA" into your skin.

Is vegan PDRN available?

Yes, there are now products that use plant-based, fermented, or microbially derived PDRN or PDRN-like DNA fragments.

You often find terms like:

Phyto PDRN

Vegan PDRN

Plant-derived PDRN

Ginseng PDRN

Rose PDRN

Peony PDRN

Microbial PDRN

Here, however, I would look closely.

"Vegan PDRN" does not automatically mean that the ingredient is chemically and biologically completely identical to classic salmon PDRN.

Plant-based variants are exciting, and there are initial interesting studies. However, the data situation and the manufacturing processes used can differ significantly from product to product.

My simple rule:

If vegan cosmetics are important to you, don't just rely on the big word "PDRN" on the front of the packaging.

Check:

1. Does the brand state the exact source?

2. Is the complete product certified as vegan?

3. Is it real PDRN or a proprietary "PDRN-like" complex?

4. What other ingredients are in the formulation?

PDRN serum or PDRN injection: They are not the same

This difference is often completely overlooked online.

PDRN and related polynucleotides are sometimes injected or used after professional treatments in aesthetic and medical applications.

In this case, the active ingredient is delivered to deeper skin layers.

A serum, on the other hand, is applied to the skin's surface. The skin barrier's job is precisely to prevent larger molecules from simply passing through uncontrollably.

Therefore, one should not automatically expect the same results from a PDRN serum as from a professional treatment.

This doesn't mean that topical PDRN "does nothing."

It just means:

Serum and injection are two different applications with different prerequisites.

A serum can be part of a soothing, hydrating, and barrier-friendly routine. Whether and how much PDRN itself penetrates deeper skin layers depends, among other things, on the size of the DNA fragments, the formulation, and the delivery system used.

What can a PDRN serum realistically achieve?

When it comes to skincare, I'm now cautious about big promises.

If a product claims it will make wrinkles disappear, remove scars, and completely renew the skin after three applications, I automatically become skeptical.

What I find more realistic for a well-formulated PDRN serum:

a more hydrated skin feeling

more visible "plumpness"

less tightness

a calmer, more nourished look

Support for a barrier-friendly routine

with regular use, possibly smoother and more elastic-looking skin

However, it is important to note: these effects are almost never caused by a single ingredient alone.

If a PDRN serum also contains hyaluronic acid, niacinamide, peptides, glycerin, or soothing plant extracts, these also contribute to the visible effect.

This is not a disadvantage. On the contrary: a good overall formulation is more important to me than a single hyped active ingredient.

Why a serum can give "plumpness" instantly

If your skin looks plumper immediately after application, it doesn't necessarily mean new collagen has formed overnight.

The faster effect usually comes from:

additional moisture

film-forming ingredients

humectants like glycerin or hyaluronic acid

a cream that reduces moisture loss

This is still a real cosmetic effect.

We just need to distinguish between:

Immediate effect: moisture, glow, and a smoother skin feel

Long-term effect: changes that require several weeks of consistent use and are much more difficult to attribute to a single ingredient

Who might find PDRN interesting?

A PDRN product can be particularly interesting if your skin:

is dry or dehydrated

appears stressed easily

tends to feel tight

needs a calmer routine after too many actives

shows first signs of loss of elasticity

wants anti-aging benefits without immediately building a very aggressive routine

Nevertheless, not every PDRN product is automatically suitable for sensitive skin.

The complete INCI list matters.

A product can contain PDRN and also contain fragrances, acids, or other ingredients that your skin personally doesn't like.

PDRN for acne: yes or no?

PDRN is not a classic active ingredient for treating acne.

It replaces neither a dermatological acne therapy nor proven active ingredients that are specifically used against clogged pores, excessive keratinization, or certain forms of inflammation.

Nevertheless, a PDRN product can be interesting in an acne routine if the rest of the formulation is light, not too rich, and soothing.

Especially if the skin has become dry and sensitive due to retinoids, acids, or other treatments, a hydrating recovery routine can be useful.

However, with active, severe, or painful acne, I would not rely solely on a trending serum.

What about fish allergy?

If you have a known fish allergy, you should be cautious with animal-derived PDRN.

Although PDRN is purified and proteins are largely removed during processing, I would not simply experiment on my own with a severe or medically relevant allergy.

Check the origin with the manufacturer and clarify its use with a doctor if in doubt.

Even without a known allergy:

Test a new product on a small area of skin first and don't introduce five new products at once.

This way, you can better assess what your skin reacts to.

Is PDRN suitable during pregnancy and breastfeeding?

For many cosmetic PDRN products, there is insufficient specific safety data for pregnancy and breastfeeding.

This does not automatically mean they are dangerous. It means that no general recommendation can be given for every product and every formulation.

Since a serum can also contain many other ingredients, I would discuss the complete INCI list with the treating doctor.

Especially during this time, I find "better to ask once too often" preferable to a general statement from a TikTok video.

How do I recognize a good PDRN product?

I look at five things.

1. The source

Is it clearly stated whether the PDRN comes from salmon, a plant, or a microbial process?

2. The overall formulation

Does the product also contain sensible hydrating and barrier-supporting ingredients?

3. The concentration

A percentage or PPM value can be helpful. But it alone does not tell you how effective a product is.

Molecular size, processing, stability, and the overall formulation system also play a role.

4. The skin goal

Do you want more moisture, soothing, glow, or a richer anti-aging treatment?

A light serum suits a different skin need than a rich PDRN cream.

5. The routine around it

Even the best serum cannot save a chaotic routine with too many acids, retinol evenings, and constantly changing products.

Why I started with Medicube

I first tested PDRN within the Medicube line.

Not because you're fundamentally not allowed to combine products from different brands. But because I wanted as few variables as possible at the beginning.

The Medicube PDRN Pink Peptide Serum combines PDRN from salmon DNA with peptides and other nourishing ingredients.

For me, it was a sensible start because I didn't just look at the PDRN content, but at the overall skin feel:

How does the serum absorb?
Does my skin tolerate it morning and evening?
Does it work under cream and SPF?
Does my skin feel calmer and more hydrated after several weeks?

Exactly this observation is more important to me than a dramatic before-and-after promise after three days.

If you want to check out the PDRN products: MEDICUBE PDRN

My simple PDRN routine

Evenings:

1. Gently cleanse

2. Apply a thin layer of PDRN serum

3. Cream

Mornings:

1. Cleanse according to skin feel or just use water

2. PDRN or a simple moisturizer

3. SPF

No unnecessary chaos.

If you want to know how to combine PDRN with retinol, vitamin C, or AHA/BHA, you'll find my complete guide here: COMBINING PDRN

Four PDRN Myths We Can Forget

Myth 1: PDRN serum changes your DNA

No. Cosmetic DNA fragments do not rewrite your genetic code.

Myth 2: PDRN serum works just like an injection

No. The method of application and the depth to which the active ingredient penetrates are different.

Myth 3: The higher the PPM, the better the product

Not necessarily. The number says nothing about all other components, molecular size, or the quality of the formulation.

Myth 4: Every PDRN is automatically vegan

No. Classic PDRN is often derived from fish DNA. For vegan variants, the source must be explicitly stated.

My Conclusion

Yes, the term "salmon DNA" sounds unusual at first.

But behind a cosmetic PDRN product is not simply raw fish material, but a purified and processed ingredient.

At the same time, we should not make PDRN bigger than it is.

A serum is not an injection.
A high PPM count is not a guarantee of efficacy.
And a viral ingredient does not replace a stable routine.

For me, the biggest advantage of PDRN products is that they can fit well into a hydrating, soothing, and barrier-friendly routine.

If your skin is currently stressed and you don't want to associate anti-aging with maximum irritation, PDRN can be an interesting step.

But as always:

Check the source.
Look at the overall formulation.
Start slowly.
And give your skin time.

FAQ: PDRN, Salmon DNA, and Vegan Alternatives

Is PDRN really from salmon sperm?

Classic PDRN is often derived from purified DNA fragments whose raw material is salmon or trout milt. However, the finished product does not simply contain raw fish material.

What does Sodium DNA mean in the INCI list?

Sodium DNA is a possible name for processed DNA fragments. The name alone does not always clearly indicate whether the source is fish, plant, or a biotechnological process.

Is Medicube PDRN vegan?

The Medicube PDRN products that are explicitly described as containing PDRN from salmon DNA are not vegan due to this source.

Is vegan PDRN available?

Yes. There are plant-based and microbially derived alternatives. Check whether the entire product is certified as vegan and what specific source the brand names.

Is vegan PDRN as effective?

This cannot be generally stated. Plant-based variants are scientifically interesting, but not every variant is identical to classic PDRN from fish, and the same data is not available for every formulation.

Does PDRN serum work like a PDRN injection?

No. A serum primarily remains on or near the skin's surface, whereas a professional treatment can deliver the active ingredient targeted into deeper skin layers.

Can PDRN alter my DNA?

No. PDRN in cosmetics does not alter your human genome.

Can I use PDRN if I have a fish allergy?

If you have a severe or known fish allergy, you should clarify the exact source with the manufacturer and discuss its use with a doctor.

Can PDRN cause breakouts?

PDRN itself is not inherently comedogenic. The entire formulation is crucial. A very rich cream may lead to impurities in some individuals more than a light serum.

How long does it take to see results?

Increased hydration and a plumper skin feel can be visible relatively quickly. More long-term changes require several weeks of regular use and depend on the overall routine.

Do I still need to use SPF with PDRN?

Yes. Sun protection remains the most important daily step when it comes to premature skin aging, hyperpigmentation, and skin protection.

Note: This article does not replace medical advice. For severe skin problems, known allergies, or uncertainty during pregnancy and breastfeeding, please consult a doctor or dermatologist.

Scientific Basis and Honest Classification

PDRN is not a completely new TikTok active ingredient. Polydeoxyribonucleotides have been studied for a longer time in regenerative medicine and wound healing research.

Nevertheless, it is important to correctly classify the existing studies: The scientific findings on medically applied or injected PDRN cannot automatically be transferred one-to-one to a cosmetic serum for home use.

What is well-researched scientifically?

Classic PDRN consists of DNA fragments of varying lengths and is traditionally obtained from purified DNA from salmon or trout. The raw material is processed, purified, and sterilized.

In preclinical investigations and medical studies, PDRN has been associated with the following processes, among others:

• Support of tissue repair

• Promotion of cell migration and cell proliferation

• Stimulation of new blood vessel formation

• Modulation of inflammatory processes

• Support of wound healing

Possible mechanisms of action include the activation of the adenosine A2A receptor and the provision of nucleotide building blocks via the so-called salvage pathway.

In a clinical study with patients with chronic diabetic foot ulcers, medically applied PDRN showed better healing results than the comparison treatment.

Important: This was not an over-the-counter facial serum, but a controlled medical application.

Why a serum is not comparable to an injection

PDRN molecules can have a relatively high molecular weight and are negatively charged. Both can make penetration through an intact skin barrier difficult.

Precisely for this reason, newer studies are focusing on special transport systems, smaller PDRN fragments, nanoliposomes, or other technological methods that are intended to improve absorption and stability.

This means:

A classic PDRN serum should not automatically promise the same results as an injection or a professional dermatological treatment.

In a cosmetic product, visible immediate effects such as increased moisture, a plumper skin feel, and more glow can also be achieved through other ingredients, for example, by:

• Glycerin

• Hyaluronic acid

• Niacinamide

• Peptides

• Ceramides

• film-forming and moisture-binding substances

PDRN can be part of a meaningful overall formulation. However, the visible effect of a serum should not be attributed exclusively to a single ingredient.

What do we know about plant-based and vegan PDRN?

In addition to PDRN from fish DNA, plant-based and microbial sources are now also being investigated.

A 2023 study investigated PDRN from cultivated ginseng roots. Effects on keratinocytes, fibroblasts, wound healing, and skin barrier were observed in cell and preclinical models.

In 2025, the extraction of PDRN from the bacterium Lactobacillus rhamnosus was also reported. Such procedures could enable a long-term animal-free and better standardizable alternative.

These results are interesting, but they do not yet prove that every cosmetic product marketed as "Phyto PDRN" or "Vegan PDRN" has the same effects as traditional PDRN.

The exact source, molecular size, concentration, preparation, and overall formulation can differ significantly depending on the manufacturer.

Can PDRN alter human DNA?

There is no scientific basis for the claim that cosmetically used PDRN rewrites human DNA or permanently integrates into the human genome.

Although PDRN consists of DNA building blocks or DNA fragments, this does not mean that these fragments automatically become part of human genes.

The effects discussed in research refer to biological signaling pathways, receptors, and the provision of nucleotide building blocks – not to a genetic alteration of the user.

How reliable are the anti-aging promises?

Research into PDRN is promising, particularly in the areas of wound healing, regeneration, and medical application.

However, the data for over-the-counter cosmetic serums is still more limited.

Many existing studies are:

• Cell studies

• Animal models

• Studies with medically applied PDRN

• Studies on special formulation or transport systems

• Small or manufacturer-related cosmetic investigations

Statements such as "removes wrinkles," "heals acne scars," or "acts like a PDRN injection" would therefore be too strongly formulated for a regular serum.

More realistic is:

A well-formulated PDRN product can complement a hydrating, soothing, and barrier-friendly skincare routine. How significant the effect is depends on the specific formulation, regular use, skin condition, and other components of the routine.

Here I differentiate between medical studies, preclinical data, and cosmetic application.

Selected Scientific Sources

1. Squadrito F. et al.
   "The Effect of PDRN, an Adenosine Receptor A2A Agonist, on the Healing of Chronic Diabetic Foot Ulcers: Results of a Clinical Trial."
   The Journal of Clinical Endocrinology & Metabolism, 2014; 99(5): E746–E753.
   DOI: 10.1210/jc.2013-3569

2. Lee K.-S. et al.
   "Analysis of Skin Regeneration and Barrier-Improvement Efficacy of Polydeoxyribonucleotide Isolated from Panax Ginseng (C.A. Mey.) Adventitious Root."
   Molecules, 2023; 28(21): 7240.
   DOI: 10.3390/molecules28217240

3. Chae D. et al.
   "First Report on Microbial-Derived Polydeoxyribonucleotide: A Sustainable and Enhanced Alternative to Salmon-Based Polydeoxyribonucleotide."
   Current Issues in Molecular Biology, 2025; 47(1): 41.
   DOI: 10.3390/cimb47010041

4. Park S. J. et al.
   "Plasma-Engineered PDRN: Surface Charge Neutralization and Nanosizing Enhance Uptake and Regeneration Potential."
   Pharmaceutics, 2025; 17(9): 1136.
   DOI: 10.3390/pharmaceutics17091136

5. He Y. et al.
   "Preparation of Polydeoxyribonucleotide Nanoliposomes and Their Applicability to Cosmetic Formulations."
   Current Pharmaceutical Biotechnology, 2026; 27(6): 728–735.
   DOI: 10.2174/0113892010353418250218064202

Note: Scientific knowledge continues to evolve. This section is for general information and does not replace medical or dermatological advice.