Red bean has been a Korean skincare staple for centuries — ground adzuki was a traditional clarifying scrub long before anyone wrote an INCI list. Beauty of Joseon has built a whole pore-care line on that heritage, and its Pore Firming Serum pulls off a genuinely clever trick: it takes the PDRN trend currently sweeping K-beauty — those skin-renewal serums built on DNA fragments, almost always derived from salmon — and makes it vegan by sourcing the DNA from red bean instead. That single swap is the serum's reason for existing, and it's a smart one, because it lets plant-based shoppers join a category that had effectively excluded them.
But a gimmick swap would be forgettable, and this serum isn't, because the formula around the red-bean PDRN is legitimately thoughtful. The headline pairs that vegan PDRN (listed as sodium DNA alongside Phaseolus angularis, the adzuki bean) with a peptide — dipeptide diaminobutyroyl benzylamide diacetate, better known as Syn-Ake, a neuropeptide designed to relax and smooth the skin surface. Together they form the 'pore firming' premise: PDRN for renewal and refining, the peptide for firmness. Then comes niacinamide, sitting high in the ingredient list where it can actually work, doing the real heavy lifting of pore care — regulating oil, refining pore appearance, evening tone. This isn't niacinamide as a label flourish; it's a core active, and its prominent placement is part of why the pore claims are credible.
What genuinely impresses me is the supporting cast, because it shows the formula was built by people who understand that active serums fail when they wreck the barrier. Centella asiatica, Coptis japonica root, and fig extract handle soothing. Ceramide NP and beta-glucan reinforce and hydrate the barrier. Squalane adds lightweight moisture, adenosine contributes its own anti-aging signal. The result is a serum that's loaded with actives yet stays fragrance-free, alcohol-free, and gentle enough that the brand pitches it for sensitive skin — and the ingredient list backs that up. For a $17 serum, the density of well-chosen ingredients here is genuinely above its price class.
The experience matches. It's a light, slightly slippery gel-serum that sinks in fast and leaves skin smooth rather than tacky, layering cleanly under moisturizer morning or night. There's nothing to dislike about how it feels, and the frosted glass dropper is a nicer presentation than the price suggests.
Now for The main drawbacks, which are about evidence and expectations more than flaws. The big one: vegan red-bean PDRN is the marketing hook, but it's also the least-proven part of the formula. Salmon-derived PDRN has a real, if still-developing, body of research behind it; plant-derived DNA-fragment ingredients are a newer, much-less-studied proposition. The renewal claims tied specifically to the red-bean PDRN should be read as promising rather than clinically settled — and notably, the parts of this serum with the strongest evidence (niacinamide, ceramides, centella) aren't the parts on the front of the box. Second, it's a small 30ml bottle, so the value, while excellent per milliliter, comes in a modest quantity. And third, as with any pore-and-firming serum, this is a slow burn: hydration and smoothness arrive in days, but the refining and firming benefits need four to eight weeks of consistency, and pores never truly 'shrink' — they look smoother, not gone.
It's worth separating what this serum will reliably do from what the marketing hopes it does, because the gap matters for a satisfied purchase. Reliably, you get a gentle, well-formulated niacinamide serum on a soothing barrier base — that alone, at $17, is a solid buy, and the niacinamide is the part with decades of evidence behind refining pore appearance and regulating oil. Hopefully, the red-bean PDRN and Syn-Ake peptide add renewal and firming on top, and they might — but these are the trendy, less-proven elements, and the firming in particular is the kind of subtle, cumulative effect that's notoriously hard to attribute to any single product. The smart way to buy this is to want the niacinamide-and-barrier foundation for certain, and to treat the PDRN-and-peptide story as an interesting upside you're not paying a premium for. Bought on those terms, it's almost impossible to be disappointed; bought expecting a dramatic pore-erasing or skin-tightening transformation from the buzzy actives, it will underwhelm, as nearly any serum at this concentration and price would. The vegan angle is a real bonus on top of all this: shoppers who avoid animal-derived ingredients have largely been shut out of the PDRN trend, which is overwhelmingly salmon-based, so a plant-derived alternative that performs at least as well as a gentle niacinamide serum gives them a genuine entry point into the category rather than a compromise.
Set against realistic expectations, though, it's an easy serum to recommend. If you have combination, oily, or normal skin, want a gentle, fragrance-free pore-refining serum, and like the idea of a vegan PDRN, you're getting a thoughtfully built, active-dense formula for budget money. Just buy it for the proven niacinamide-and-barrier foundation and treat the trendy red-bean PDRN as a promising bonus rather than the main event, and you won't be disappointed.
