Letters from a Dermatologist · Ingredients
Rose PDRN: The Plant‑Based Take on a Korean Skincare Ingredient
Have you spotted "rose PDRN" on a serum label? PDRN is purified DNA, cut into short strands, and in the rose version those strands come from plants (roses) instead of animals. If you'd rather skip animal-derived ingredients, it makes a great alternative.
First, the Salmon
The classic PDRN comes from fish, specifically rainbow trout and chum salmon, and the DNA is taken from their sperm cells. It's carefully purified to remove the proteins, leaving mostly DNA strands.
In Korea, PDRN first became known through "skin booster" treatments at dermatology clinics, where people nicknamed the injections "salmon shots." From there, the name moved onto skincare labels.
Why Plants Joined In
Here's a simple fact: every living thing carries DNA, including plants. So researchers started asking a simple question: could you get PDRN-like DNA strands without using fish at all?
The answer turned out to be yes. Plant-based PDRN is now made from sources like roots and plant cells grown in culture. In lab studies using skin cells, plant versions have also shown activity patterns similar to the classic fish-derived kind.
Enter the Rose
Rose DNA has joined the list too. In one set of lab experiments, researchers extracted PDRN from a garden-rose hybrid, using its stems, leaves, and flower heads. Then they exposed skin cells treated with this PDRN to UV-A light and a common air-pollution chemical. Cells given this rose PDRN kept their mitochondria (the tiny power plants inside each cell) working better and showed less oxidative stress, the kind of wear that sun and smog can cause. The team saw similar signs in skin samples studied in the lab.
Roses were part of skincare long before anyone studied PDRN, of course. The Damask rose, for one, has been prized for centuries for its essential oil.
Try This
- Try new serums on a small patch first. A few days on one spot is an easy way to see how your skin reacts.
- Give it two weeks. If it feels comfortable on your skin, with no irritation, use it consistently for at least two weeks.
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