If you have seen "salmon DNA" on your feed and wondered whether it is genius or gimmick — here is the plain-English version of 2026's two defining K-beauty ingredients.
PDRN: the repair signal
PDRN (polydeoxyribonucleotide) is a DNA fragment originally derived from salmon, used for years in Korean dermatology clinics for skin recovery. In topical serums and creams, it is prized for supporting the skin's own renewal processes — users reach for it after retinoid irritation, sun exposure or micro-needling, and for general bounce and glow.
Exosomes: the messengers
Exosomes are microscopic vesicles that carry signals between cells. In skincare they act like a delivery service for regenerative messages — the logical next step beyond single peptides. You will often see them paired with PDRN in "repair" lines.
How to use them
- Order: after cleansing and toner, before moisturizer — like any serum.
- Frequency: both are gentle enough for daily use, morning and night.
- Pairings: they layer well with hyaluronic acid, ceramides and niacinamide. Use with (not instead of) sunscreen.
- Who benefits most: anyone chasing plumper, calmer, better-recovering skin — especially alongside actives like retinol that stress the barrier.
What to look for on the label
PDRN concentration or position on the ingredient list, a stable airless pump (DNA fragments degrade), and complementary barrier ingredients. Korean-manufactured lines tend to lead the category they invented.
Explore our PDRN and salmon-DNA collection (149 products) and exosome serums — free US shipping on every order. New to barrier care? Start with ceramides.
FAQ
Is PDRN vegan?
Traditional PDRN is salmon-derived; some newer lines use plant-biotech alternatives labeled "vegan PDRN" or "phyto-PDRN". Check the label if this matters to you.
Can I use PDRN with retinol?
Yes — they complement each other. Many users apply retinol at night and PDRN in the morning, or layer PDRN after retinol to support recovery.