Anua Niacinamide 10 + TXA 4 Serum Best Overall
Key details
- Size
- 1.01 fl oz
- Texture
- Watery, lightweight
- Fragrance
- Fragrance-free
- Key Actives
- 10% niacinamide, 4% tranexamic acid, 2% arbutin
Ten percent niacinamide, four percent tranexamic acid, two percent arbutin — Anua prints the numbers on the front of the bottle, and they're the reason this is the first serum we recommend. Each active interrupts a different step in the process that leaves a mark behind after sun, a breakout, or a flare of melasma, so the formula works on pigment from several directions at once instead of asking one ingredient to carry the whole job.
Plenty of serums list those actives at token amounts; here the percentages are stated and high enough to matter. That shows up in what improves. The change is on the spots themselves — post-acne marks and patchy tone — more than on general radiance, and among the dedicated correctors in this guide it has the strongest record on exactly that job, which is the distinction that separates a spot treatment from a brightener.
The texture asks something of you. It goes on watery but dries to a tacky film that doesn't play well with makeup, so most people will want it at night with moisturizer over the top. It's also strong enough to sting, and reactive skin can break out rather than clear: start with one drop every other night, build from there, and stop if you see new bumps instead of pushing through.
The 1.01 fl oz bottle looks small, but one or two drops covers the whole face, so it goes further than the size suggests. And because there's no fragrance in it, nothing else in your routine has to move to accommodate it.
Pros
- Niacinamide, tranexamic acid, and arbutin at stated strengths
- Best dark-spot results of the products here
- Fragrance-free and easy to layer
- A couple of drops covers the face
Cons
- Tacky dry-down that rules out daytime wear under makeup
We recommend it first for dark spots and post-acne marks: it's the most complete pigment formula here, fragrance-free, and it works while you sleep.