Our assessment
The sample is positive on the goal this serum is sold for: buyers report dark marks and uneven tone improving, but almost all of them describe that happening slowly and only with consistent use. Where the sample splits is texture, which some call lightweight and others call sticky, and irritation when too much is applied at once, which several buyers describe and work around rather than abandon the product for.
Buy nowEvidence note: we sampled 13 customer comments for this exact product on October 12, 2026. We do not reproduce them here. This sample is not representative of every buyer; the site score instead uses the marketplace-wide average and rating count.
In brief
This is the Anua Niacinamide 10 + TXA 4 Serum, a 1.01 fl.oz facial serum built around niacinamide and tranexamic acid, sold for dark spots, post-blemish marks and uneven tone and positioned as a lightweight daily step. The marketplace average is 4.5 out of 5 across roughly 17,700 ratings: 76 percent at five stars, 10 percent at four, and a one-star tail of about 5 percent, slightly heavier than the other Anua product in this sample. Skin irritation and texture are both among the most-discussed themes in the rating data.
Thirteen comment bodies is a small slice of a rating count that size, so this is a set of detailed accounts rather than a survey. Several come from buyers using it for months or repurchasing repeatedly, which makes them unusually informative about how it behaves over time.
What the sample agrees on, and where it splits
The result buyers are chasing is fading dark marks and evening out tone, and the sample broadly supports it with a consistent caveat. Buyers describe post-acne marks, sun spots and melasma looking lighter after weeks of use, and several say their complexion looks brighter and more even. Almost every positive account adds the same condition: it is not fast, and it only works if you keep going. One buyer who used it daily for a month saw little change in tone yet, which is the honest counterweight inside the sample.
The application experience splits. Some call the texture light, watery and quick-absorbing, layering cleanly under moisturiser and sunscreen. Others call it sticky or gluey and say it becomes uncomfortable when too much is used, one noting the product is often shown applied far more generously than they found workable. That is a disagreement about feel, not about results.
Irritation is the other split, and it follows a pattern the sample is explicit about. Buyers who started gradually, a small amount every other day, describe no trouble; buyers who applied a heavy layer report breakouts, redness or texture, and one describes cystic acne after over-applying that settled once they restarted with a thin layer. The recurring advice is to start low and go slow, especially for sensitive skin, and not to stack it with other high-concentration products.
We have not tested this serum.
Bottom line
Worth considering if your goal is fading dark marks or evening out tone and you will use it consistently for weeks before judging it, introducing it gradually. The reservation is twofold: the feel is sticky for a meaningful minority, and irritation follows over-application closely enough that starting low and slow is not optional. This is not medical or dermatological advice. The score shown for this product comes from the marketplace-wide rating and its rating count, not from these 13 comments. No individual customer review is reproduced here.