Missha's PDRN NAD line has two products and two very different numbers. The cream states its sodium DNA at 50,000 parts per billion, five thousandths of a percent; this serum states it at 10,010,004 parts per billion, a hair over one percent, two hundred times the cream. Both are printed on the brand's own pages, and together they are the most instructive thing anyone has published about topical PDRN this year, because they show, in one line, the gap between a signature dose and a real one. The serum has the real one. Whether a real dose of topical DNA does anything is a separate question, and the honest answer is that nobody has tested it.
Start with what is tested. Panthenol sits fourth and niacinamide seventh, two vitamins with the deepest leave-on evidence in the category for barrier repair, calm and even tone, placed above the headline DNA and doing the serum's durable work; niacinamide is also the molecule the skin uses to make its own NAD+, which makes the vitamin at seventh the only credible route to the coenzyme story on the front. Then a hydration complex that deserves more credit than the name gives it: xylitylglucoside, anhydroxylitol and xylitol, a sugar-alcohol trio with published data for boosting ceramide synthesis and water retention, plus xylose, sodium hyaluronate and hydroxyethyl urea, running from tenth to twentieth. That complex is why skin looks plumper, dewier and more rested within a minute of the serum setting, and why the few dozen early Amazon reviewers averaging close to five stars say glow before they say anything else. A soothing tier follows, gromwell root with its shikonin calming record, centella, beta-glucan, allantoin and a trace of guaiazulene for colour, and three grain ferments for conditioning. There is no fragrance, no alcohol, no silicone. Strip the trend molecules out and this is a well-built calming hydration serum for sensitive skin.
Now the trend molecules. Sodium DNA at eighth and one percent is, for a topical PDRN product, a large and candid dose; the category is full of serums carrying DNA at the cream's trace level and charging more. Polydeoxyribonucleotide's evidence, though, is entirely injectable, salmon-derived fragments placed in the dermis for wound and tissue repair, and no controlled trial has tested DNA on intact skin at any dose. At one percent it may act as a humectant and perhaps a surface signalling molecule; it does not reach the dermis, and repair is a word that belongs to the syringe. Missha's camellia sourcing is a plant story for a fish ingredient and adds antioxidant polyphenols and a name. NAD+, at a stated 30,030 parts per billion in the visible capsules that pop as the serum spreads, is a large, charged coenzyme that does not cross the stratum corneum meaningfully, and NMN and ATP beside it are the same idea; the capsules are a pleasant piece of theatre borrowed from oral longevity supplements, where the molecules are swallowed.
What that leaves is a serum that is better than its label in one direction and weaker in the other. Better, because the base is genuinely good: unscented, calming, plumping, layer-friendly, gentle enough to buffer a retinoid, and priced at twenty-five dollars for 30 millilitres, six to eight weeks of twice-daily use. Weaker, because firming and repair are the words on the bottle and neither the DNA nor the NAD+ can deliver them in a leave-on, and the early reviews saying too soon to tell are, at these doses, likely to stay that way.
One more thing the one percent figure earns the brand, and it is not a small thing. For two years PDRN has been sold on a clinic association with almost no disclosure of dose, and a customer comparing serums had no way to know whether the DNA on the label was a signature or an ingredient. Missha printing ten million parts per billion on one product and fifty thousand on its sibling gives that customer a ruler, and once the ruler exists it can be held against every other PDRN serum on the shelf, most of which will not survive the comparison. The serum may not firm anything; it has done the category a service by saying how much it contains.
The practical notes are few. Spread the serum fully so the capsules burst and no beads remain, give it a minute before moisturizer, and pair it with a richer cream than Missha's own if skin is dry, since the line's cream is an oil-free jelly. The soy-derived ferments are a note for the soy-allergic. The 30 millilitre bottle is small, and the brand's serum-and-cream bundle is the rational way to buy the line if the story is the draw.
Missha, founded in 2000, has made two decades of business out of affordable versions of whatever K-beauty is talking about, and this line is that model applied to 2026's two loudest molecules with more disclosure than most; the brand's evidence is dermatologist testing and nothing more, and the serum is two months old in the US. So read the two numbers together and buy the one that is real. This is a good, gentle, glow-giving hydration serum with an honest one percent of an unproven ingredient and a trace of a famous one, and at this price the honesty is worth more than the fame.
