COSRX The Niacinamide 15 Serum Reviews

Name: The Niacinamide 15 Serum
Brand: COSRX
Rating: 4.59 (744 reviews)

4.59

521

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44 Reviews

달콤한청거북977082
Apr 24, 2025
수부지Sensitive Skin
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Pros
It's not sticky, doesn't leave an oily residue, and works great for those with oily skin.
Cons
The black bottle makes it hard to see how much product is left. I tried it because it's so popular, but one bottle didn't live up to the hype.

감쟈옥수슈
Mar 1, 2025
Combination SkinAcne Skinproduct.Atopy Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
After using it, I felt like the oiliness of my skin was reduced.
Cons
It stung a lot when it touched the wounds from my skin blemishes. The blemishes didn't decrease, so it doesn't seem to be effective for treating them.

삐삐림
Jan 22, 2025
Combination SkinAcne Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
It really helped control my skin's oiliness! But it didn't leave my skin feeling dry! I didn't experience any breakouts or side effects either.
Cons
I had expected good results from millet for controlling oiliness, but it didn't help with my acne or blemishes at all. ㅠㅠ

신선한쿠프레들소9183
Nov 27, 2024
Oily SkinAcne Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
This product is great to use in the summer as it regulates oil well. It has good absorbency and functionality, so I would recommend it. It's not sticky, which is nice.
Cons
I think it would be nice if there was a larger version since the capacity is small.

퇴라는나물
Nov 27, 2024
수부지Sensitive Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
I definitely feel that my skin becomes more taut and my sebum production decreases when I use it. It's been a while since I've seen the expected effects from a serum. The formula is not too sticky or too watery, so I think I used just the right amount.
Cons
While I was satisfied with the discounted price I got from the promotion, if I had paid the full price, the value-to-price ratio would have been a bit on the high side. I might hesitate a bit to buy it with my own money...

곤파파니
Nov 5, 2024
수부지
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
It absorbs quickly, and while it's hard to tell, the oiliness has decreased.
Cons
It becomes hard and white, with a small amount of powder forming. The aroma is not very good.

장식적인자바코뿔소288
Oct 30, 2024
수부지Acne Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
Niacinamide is said to be good for acne-prone skin, so I tried it and noticed that my oiliness has decreased and my breakouts seem to be less frequent than before.
Cons
At first, it felt a bit stinging, so it's best to start with a small amount and gradually increase the quantity.

누누베
Oct 22, 2024
Combination SkinAcne Skin
Review under verification
The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.
Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
I have very dry skin and tend to get breakouts. After using the product, there were no breakouts, and it provided good hydration. It seemed to control the oiliness well after use, which I liked.
Cons
I'm not sure about the effectiveness. The texture felt a bit sticky, so I wish it was a bit more lightweight.

너구리보스
Oct 20, 2024
Oily SkinAcne Skin
Review under verification
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
Niacinamide also has whitening properties, so I tried using the same brand's vitamin product instead, and it's gentler and better. It has less irritation and seems to help with scar care as well. It's very suitable for oily skin. It's a thin ampoule formula and absorbs quickly without feeling greasy.
Cons
The amount is very small, extremely small. I wish they would come out with a larger size.

니난논33
Oct 15, 2024
Combination SkinSensitive Skin
Review under verification
The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.
Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The pores do contract. It is also satisfactory that it is absorbed immediately without being greasy.
Cons
Is it irritating? Does it cause trouble... Even when I mix it with a drop of moisturizer and use it, it still causes trouble...
Tip
Try applying it to your neck if you have sensitive skin. When doing a modeling pack, you can use it by adding 6 drops and it can be used without any trouble.