Klairs Vitamin Drop vs. Anua Niacinamide+TXA

Both address brightening, but for different audiences: one explicitly for vitamin C beginners at a mild concentration, the other a more clinically-dosed, targeted treatment.

This is a genuine beginner-versus-targeted-treatment question, mild pure vitamin C at a gentle 5% against a specifically dosed niacinamide-and-TXA pairing, plus a real, checkable fragrance difference.

Klairs runs $0.57 per milliliter ($20.00 for 35mL). Anua runs $0.73 per milliliter (Amazon, checked 17 October 2026). Klairs is somewhat cheaper per mL.

Klairs uses pure ascorbic acid at a mild, entry-level 5%, alongside centella asiatica and sodium hyaluronate, explicitly positioned for first-time users. Anua pairs niacinamide at a meaningful 10% with 4% tranexamic acid, a more clinically-concentrated formula specifically targeted at stubborn hyperpigmentation.

Klairs contains fragrance. Anua is confirmed fragrance-free. For a genuine first-time actives user who's also fragrance-sensitive, that's worth weighing alongside the formula difference.

If you're genuinely new to actives and want the mildest, most established starting point, Klairs' 5% pure vitamin C is the safer entry. If stubborn pigmentation is a specific concern and you want a clinically-dosed, fragrance-free formula, Anua is the more targeted choice even for someone newer to actives.

See our full best Korean serums by concern guide, or browse the rest of our serum coverage.