COSRXThe Niacinamide 15 Serum

Very pleasant serum, light consistency, non-sticky. I would buy carefully

I've been using it for a short time so far, but it feels the same as all other niacinamides

Very hydrating and leaves the skin beautifully nourished. Great as a serum under cream and make-up during the day.

This niacinamide serum is HOT. They smoothed out my acne, it helped to narrow my pores. I would definitely recommend and buy again. ❤️

A miracle serum for my skin. Have noticed better oil control and better looking pores. I wish it spread more easily, skin should be hydrated with a mist or something prior to, to help this serum spread evenly. I would rate it closer to 5 starts than 4.

The serum is an excellent product that effectively reduces the visibility of pores and evens out the skin tone thanks to the content of niacinamide. The serum absorbs quickly, leaving the skin refreshed and radiant. After using this serum, my skin became visibly smoother and more uniform. I feel it is better moisturized and less prone to breakouts. I am delighted with the effect of healthy, radiant skin.

Nice serum for dry skin and damaged hydrolipid barrier. Already from the first use, the skin tone is evened out and discolorations are reduced. It is not sticky and does not leave a mask-like feeling. Convenient packaging. There is no smell.