COSRXThe Niacinamide 15 Serum

Great serum, I've bought it again. My skin looks fresher and more well-groomed, my pores are smaller. I use it every day, both in the morning and in the evening.

I have been using the serum for a month. The oiliness of the skin has noticeably decreased, the pores have become less pronounced, and the subcutaneous rashes have decreased. The serum has a light texture, is quickly absorbed, and is not sticky. It can be a little drying, so it is important to apply a moisturizer.

This serum with a slightly viscous consistency beautifully nourishes and hydrates the skin, evens out skin tone, and reduces the appearance of hyperpigmentation. It absorbs very quickly into the skin, leaving it hydrated and plump to the touch.

Great serum❤️ it has a nice consistency and is not sticky at all. I just finished using it all and will definitely order more

For me, the consistency is excellent..it's not just water...but also not gel...something in between..it spreads well on the face and leaves a sticky texture on the face, but I definitely don't mind it..the skin looks tight, when you put on cream then it absorbs and the stickiness disappears...awesome product, the Ksisters are a very fast seller and give free samples, very pleased

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.