PN vs PDRN in Korean skincare: which to buy
PN (polynucleotide) and PDRN are related regenerative actives, both derived from salmon DNA, and the main difference is molecular size: PN chains are longer, while PDRN is a smaller fragment. In practice, both aim to support skin recovery and a plumper, more resilient look, and many Korean cosmetics serums combine them with peptides or niacinamide rather than using them alone.
Which one to buy depends less on the label and more on your goal, so below we match our in-stock serums to firmness, fine lines and general glow.
For those who want a firming, plumping PDRN and peptide serum for the whole face.
For anyone wanting PDRN paired with bakuchiol as a gentler alternative to retinol.
For targeting fine lines and the delicate under-eye area with a peptide eye serum.
For general radiance and even tone with niacinamide and propolis, easy to layer with other actives.
For experienced users who want a retinal-based renewal step rather than a salmon-DNA active.
How to choose between PN and PDRN
Think in terms of outcome rather than the exact ingredient name. If you want a firming, bouncy feel on the face, a PDRN peptide serum is a straightforward pick, while a bakuchiol and PDRN combination suits those who also want a gentler alternative to retinol. For the delicate eye area, choose a serum formulated specifically for it, and for overall radiance a niacinamide-based option can sit alongside these actives.
What to avoid and how to patch test
Avoid layering several strong regenerative or retinoid-type actives at once, especially when starting out, as this can leave skin sensitised. Introduce one new serum at a time and give your skin a couple of weeks to adjust before adding another.
Do a patch test on your inner forearm or behind the ear for a few days before applying to the full face, and stop if you see persistent redness or irritation.
How to use them in your routine
Apply a regenerative serum to clean, slightly damp skin after toner and before moisturiser. Start every other day, then build up to daily use as your skin tolerates it, and always follow with sunscreen in the morning since freshly renewing skin benefits from sun protection.
Fitting it into a full routine
- Cleanse, then tone.
- Apply your chosen PN or PDRN serum, pressing gently until absorbed.
- Use an eye serum for the under-eye area if needed.
- Seal with moisturiser, and add sunscreen in the daytime.