Okay so my friend just asked me about this Anua serum that’s been blowing up on Korean skincare forums, and honestly? I get the hype. It’s not just another serum β it comes with a refill cartridge which is both eco-friendly AND genius for lazy people like me. Let me break down why this is sitting at the top of Olive Young’s bestseller list right now! π
Anua PDRN Hyaluronic Capsule 100 Serum 30ml Refill Set
β¨ Best for: All skin types, especially dehydrated & sensitive skin
β± Longevity: 1-2 months per bottle (you get TWO!)
π Repurchase rate: High
Why Koreans Love This

The refill system is such a Korea thing β they’re all about sustainability without sacrificing convenience. You basically get a full-size serum PLUS a refill cartridge that clicks right in when you’re done with the first one.
People are raving about how it plumps their skin without that sticky feeling some hyaluronic serums leave behind. The texture is this interesting gel-serum hybrid that absorbs really fast, which is perfect for layering in a K-beauty routine.
What Real Buyers Are Saying
“I have super sensitive skin and most serums make me break out, but this one? No irritation at all. My skin feels bouncy in the morning and the refill system means I don’t have to reorder as often!” β verified buyer
“The texture is SO light but it really works. I live in a dry climate and this keeps my skin hydrated without feeling heavy. Plus the dropper dispenser is much better than pump bottles.” β verified buyer

One thing I keep seeing in reviews is how people love using this both morning and night. The lightweight formula works under makeup without pilling, which is honestly harder to find than you’d think!
| Feature | Details |
|---|---|
| Skin Type | All types, especially dehydrated, sensitive, and aging skin |
| Finish | Dewy, non-sticky, absorbs quickly |
| Longevity | 30ml per bottle, most use 2-3 drops twice daily |
| Best For | Hydration, plumping, improving skin texture |
π Mina’s Ingredient Note
The PDRN (polydeoxyribonucleotide) here is actually sourced from salmon DNA, which sounds weird but it’s been used in Korean dermatology clinics for wound healing and skin regeneration. Honestly, the concentration matters more than the ingredient itself β it’s usually effective at 1-3%, though brands rarely disclose exact percentages. Worth checking if you have fish allergies though, even though reactions are pretty rare with topical application.
β Mina, from Seoul β¨
Who Should (and Shouldn’t) Buy This

The refill set is honestly smart if you know you’ll stick with a product. You’re basically getting 60ml total, so it’s better value than buying singles.
π Is This For You?
β People who want serious hydration without the weight β this layers beautifully
β Anyone dealing with dull, tired skin that needs a plumpness boost
β Eco-conscious shoppers who love the refill concept
β If you prefer super minimal routines (this works best layered with other products)
β Those with fish/seafood allergies should patch test or skip
How It Compares to Other Bestsellers
| Product | Best For | Finish | Longevity | Buy |
|---|---|---|---|---|
| Anua PDRN Hyaluronic Capsule Serum | Hydration & plumping | Lightweight, dewy | 60ml total (30ml x2) | View |
| REJURAN Healer Turnover Ampoule | Anti-aging & repair | Concentrated, rich | 30ml total | View |
| numbuzin No.5+ Vitamin Serum | Brightening & glow | Silky, radiant | 60ml total (30ml x2) | View |
If you’re debating between these, think about your main concern. Anua is your hydration hero, REJURAN is more targeted for aging skin, and numbuzin is the brightening pick. Honestly though? The Anua refill set gives you the most product for experimenting! π€
π Shop on Olive Young Global β
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