06.20.24
Love this
My skin fell in love with this this.. It cleared up my dark marks within 2 weeks of using once per day (night)
05.17.24
Cosrx niacinamide
Excited to use it but arrived having spilled and unsure of how much of the content is left.

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05.06.24
COSRX Niaciamide serum
Doesn’t see any difference much after using for 2 months. Give a little bit hydration. No smell and irritation.
04.22.24
LOOOVE it Soo MUCH!
It makes my skin glowy from the first use the next morning, I strongly recommend it, strong concentration will irritate sensitive skins, brightened my skin and good for hyperpigmintation and oil controlling.
04.21.24
Good product
I use this product every other day and it leaves my oily skin less oily throughout the day while giving me a nice glow! I have noticed a difference in how less oily my skin is after using this. I would re purchase. I use this during the day time.

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