COSRX Niacinamide 15% Serum: a Guru Score of 78% from 2 experts

What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

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✓Yay

"If you want more niacinamide, COSRX has a niacinamide serum at fifteen percent, the texture is even lighter, so for oily skin it's no problem, this one can be the better pick."

All 2 takes from CYoung

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"Niacinamide is a very popular ingredient nowadays, it makes redness a lot better and controls oil, good if you're oily or acne prone. Some people say they're not satisfied because the niacinamide percentage is low, but careful, more isn't always better, higher niacinamide concentrations can cause breakouts and inflammation, so start with a low percentage and work up. This one is just so so, ninety percent of the cosmetics I grab have niacinamide in them anyway, so it's not a C, but for anyone who wants it, this is a B."

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"If you want more niacinamide, COSRX has a niacinamide serum at fifteen percent, the texture is even lighter, so for oily skin it's no problem, this one can be the better pick."

Nipun Kapur

408k subs

✓Yay

"The cost Rex one is a lot more gentle"

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Frequently asked.

Is COSRX Niacinamide 15% Serum worth it?

Yes. All 2 gurus who reviewed it give it their stamp of approval, for a Guru Score of 78%.

What is COSRX Niacinamide 15% Serum's Guru Score?

COSRX Niacinamide 15% Serum holds a Guru Score of 78%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.