If you've browsed Korean skincare lately, you've almost certainly seen four letters on serums, creams and sheet masks: PDRN. It started in Korean dermatology clinics and has quickly become one of the biggest ingredient trends in K-beauty. Here's what it actually is and why so many brands are building whole lines around it.
What does PDRN stand for?
PDRN is short for polydeoxyribonucleotide — small fragments of DNA. In skincare it's most often sourced from salmon, which is why you'll see "Salmon PDRN" on some packaging. Plant-based versions also exist, such as the white rose PDRN used in Mediheal's Rose PDRN mask.
On ingredient lists you may see it written as sodium DNA.
What does PDRN do for skin?
PDRN is valued as a skin-supporting ingredient. In cosmetic formulas it's used to help:
- Support the skin's natural renewal, so skin looks smoother and more even over time
- Boost hydration and bounce — the plump, springy look Korean skincare calls "chok-chok"
- Calm stressed or tired-looking skin, which makes it popular after a long winter or a busy week
It's usually paired with other hard-working ingredients like peptides, collagen, niacinamide or centella, so each product has its own focus.
Who is PDRN for?
Because it's gentle and focused on recovery and hydration, PDRN suits most skin types — including dry, dull and sensitive skin. It's a particularly good pick if your skin looks tired, has lost some of its bounce, or feels stressed by cold weather and indoor heating. As with any new product, patch-test first if your skin is very reactive.
How to add PDRN to your routine
You don't need a whole new routine. Swap PDRN into one or two steps you already do:
- Toner or toner pads — a quick, easy first layer. Try the Medicube PDRN Pink Collagen Toning Gel Toner Pad or the VT Cosmetics PDRN Toner.
- Serum or ampoule — the most concentrated step. Our picks: Medicube PDRN Pink Peptide Serum, VT Cosmetics PDRN Glow Ampoule and Haruharu Wonder Rose PDRN Firming Serum.
- Moisturiser — to lock it all in. The Medicube PDRN Pink Collagen Capsule Cream and Dr. Althea PDRN Reju 2000 Cream are both favourites.
- Weekly treat — a Mediheal Rose PDRN Essential Mask or the overnight Medicube PDRN Pink Caffeine Night Wrapping Mask.
Always finish your morning routine with sunscreen — any skin-renewal routine works best when skin is protected from UV.
The bottom line
PDRN is a gentle, hydrating, skin-supporting ingredient that helps skin look smoother, bouncier and more rested. Start with one product — a serum is the easiest place to begin — and give it a few weeks of daily use.
