Tag: cosrx
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COSRX Niacinamide 15: When More Stops Helping
The COSRX Niacinamide 15 serum puts three to five times the studied concentration on your face. Here is what that buys you, what it costs you, and who should start lower.
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COSRX Acne Pimple Patch Review: What It Can’t Fix
The COSRX Acne Pimple Patch works — on exactly one type of spot. Here’s which blemishes it flattens overnight, which it does nothing for, and how to use it right.