What Is PDRN? The Viral Salmon DNA Skincare

PDRN stands for polydeoxyribonucleotide — a purified DNA ingredient extracted from salmon DNA that signals your skin cells to repair themselves from the inside out. The DNA is extensively processed to remove all proteins and allergens, leaving only bioactive polynucleotide chains safe for skin use. It started as a medical wound-healing agent, with clinical research showing a 37.3% wound healing rate versus 18.9% in the placebo group, before Korean dermatologists adapted it into the skincare we know and love today.

Scientifically, it’s a mixture of deoxyribonucleotides derived from a controlled purification and sterilization process of Oncorhynchus mykiss (Salmon Trout) or Oncorhynchus keta (Chum Salmon) sperm DNA. The molecular weights range between 50 and 1,500 KDa — a range that closely mirrors human DNA, making it highly biocompatible with our skin. The purification happens at high temperature, producing a substance that is over 95% pure with all proteins and peptides inactivated.

Yes, PDRN is safe for all skin types including sensitive skin, and it is one of the most thoroughly vetted ingredients in both medical and cosmetic skincare. A five-year post-marketing safety study covering over 300,000 prescriptions confirmed an excellent safety profile with zero immune reactions, making it one of the few actives with that level of real-world evidence behind it. Unlike retinol or AHAs that require a gradual introduction period, PDRN is gentle enough for daily use morning and evening without any risk of sensitivity or overuse. 

The only exception worth noting is if you have a confirmed fish allergy, which in that case, check with your dermatologist first, or swap to a plant-based vegan PDRN option like , which works the same way without any salmon-derived ingredients.

Yes. PDRN is one of the few active ingredients in skincare that is safe and beneficial for daily use, morning and evening. Unlike retinol or AHAs, which require gradual introduction to avoid sensitivity, PDRN is non-irritating and has a well-documented safety profile across all skin types including sensitive and reactive skin.

PDRN is extracted from the sperm cells of Oncorhynchus mykiss (Salmon Trout) or Oncorhynchus keta (Chum Salmon). The DNA fragments undergo a controlled purification and sterilization process at high temperature, removing all proteins and peptides until the final substance is over 95% pure. The resulting polydeoxyribonucleotide chains have molecular weights between 50 and 1,500 KDa — a range that closely mirrors human DNA, making it highly biocompatible with skin.

Yes. According to Squadrito et al. (2017), published in Frontiers in Pharmacology, PDRN is defined as “a proprietary and registered drug that possesses several activities: tissue repairing, anti-ischemic, and anti-inflammatory.” It originated in Italian medical research in the 1980s before Korean dermatologists adapted it for aesthetic use.

Most dermatologists say yes, because all fish proteins are completely removed during purification. However, if you have a confirmed fish allergy, check with your dermatologist first — or choose a plant-based vegan PDRN product like

A randomized controlled trial of 216 diabetic patients found PDRN treatment achieved a complete wound healing rate of 37.3% vs 18.9% in the placebo group (p=0.003). A five-year post-marketing safety study covering over 300,000 prescriptions confirmed an excellent safety profile with zero immune reactions.1

1.Squadrito F, Bitto A, Irrera N, Pizzino G, Pallio G, Minutoli L, Altavilla D. Pharmacological Activity and Clinical Use of PDRN. Frontiers in Pharmacology. 2017;8:224. doi:10.3389/fphar.2017.00224. PMCID: PMC5405115.

is delivered directly into the dermis at a clinic — faster, more intensive results. It’s approved in South Korea, Australia, and parts of Europe, but not currently FDA-approved for injection in the US. Cosmetic PDRN (serums, creams, pads) is completely legal in the US, available online, and a genuinely effective alternative at a fraction of the cost.

Improved hydration and skin texture are usually noticeable within 2–4 weeks of consistent daily use. Firmer skin and improved elasticity typically appear after 6–8 weeks.

Yes, but we recommend not using it in the same step. Use PDRN in your morning routine and retinol in your evening routine to avoid potential irritation. PDRN pairs beautifully with hyaluronic acid, peptides, and niacinamide at any time of day.

Yes — plant-derived PDRN from ginseng or oat is available and works similarly. uses 99% pure oat-derived PDRN and is vegan, cruelty-free, and hypoallergenic tested.