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CosRx

The Niacinamide 15 Serum, 0.67 fl. oz. (20 ml)

4.6 · 1412 reviews
2,363 ₽

Acetyl Glucosamine + Zinc PCA Oil Control Minimize Pores & Sebum Clinically Proven Non-Comedogenic Highly concentrated 15% niacinamide serum that helps control excess sebum and minimizes the appearance of clogged pores.

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Acetyl Glucosamine + Zinc PCA Oil Control Minimize Pores & Sebum Clinically Proven Non-Comedogenic Highly concentrated 15% niacinamide serum that helps control excess sebum and minimizes the appearance of clogged pores.

Customer reviews

5.0
verified purchase

I’ve tried a lot of niacinamide products over the last few years (Paula’s choice, cosrx snail and niacinamide, naturium, etc) and this one is so far my favorite. It’s very potent, the zinc and niacinamide is such a good combo. I like the texture and it absorbs quickly. Highly recommend this especially for acne-prone folks with larger pores or those with hyperpigmentation

1/23/2023
5.0
verified purchase
Great for my oily face !

After a week of using I can see effect in my face I have clogged pores in my cheeks and T-zone. Quality is great no joke! I used toner then apply this serum daily evening and morning to see the effect (coz gosh i have so much sebum secretions in my face )..you can also apply moisturizer after applying serum at night..and in daytime I applied sunscreen. So far I like it and will buy again!

10/9/2024
5.0
verified purchase
Better skin having this once a day

CosRx The Niacinamide 15 Serum delivers high quality in a compact size, making it easy to fit into any routine. The formula is well-balanced, with a composition that targets common skin concerns while being gentle enough for frequent use. It’s effective on various ages and skin types, including sensitive skin, and the lack of a strong scent is a plus for many. The packaging is practical, and the benefits—brighter, smoother skin—are noticeable with consistent use.

8/14/2025
4.0
verified purchase
Awesome

No scent. I use it once a night on a daily basis, so weekly frequency. I would not recommend if you have sensitive skin. It’s a watery essence consistency. I like that it’s light enough for me to pair with other products without it building up too much.

1/6/2025
3.0
verified purchase
Too strong for my skin

Unfortunately, this serum did not work for me. After using it, my face started breaking out with small pimples, so I think the 15% niacinamide concentration may be too strong for my skin. If you have sensitive or reactive skin, I would recommend applying an essence or cream first and then layering a small amount of this serum on top, or choosing a product with a lower percentage of niacinamide.

3/28/2026
5.0
verified purchase
Serum for face

Dont have specific scent cause is dont like smells. Use of product is super easy and easy to apply. Quality i would say good, have been usin other the same vrand products for long time, thats why bought this one, Size super good for travel, Package is glass. My facd locves is cause it is sensitive.

3/9/2026
4.0
verified purchase

A powerful and effective serum for controlling excess oil and minimizing the appearance of pores.The texture is lightweight and absorbs quickly without feeling sticky. Since it’s a high concentration, it’s best to introduce it gradually. Ideal for oily or combination skin dealing with enlarged pores or post-acne marks.

3/1/2026
5.0
verified purchase
Nice

Not sticky, absorbs quickly, moisturizes even. I pair with acids and helped a little bit with my pores appearance

2/14/2026
5.0
verified purchase
I didn’t even think it’ll work

No scent, good packaging as the Cosrx used to have, perfect for sensitive skin, of course if you balance using, gentle and effective way to take care of your skin. If you need a quality Niacinamide serum go for this product, but remember to control frequency not to get irritated skin.

12/1/2025
5.0
verified purchase
Not good for sensitive skin

It’s pretty clean formula but I would say pretty strong for my sensitive skin. I always only use a drop in my cream. And it helps!

11/15/2025