COSRX The Niacinamide 15 Serum Reviews

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

4.59

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7 Reviews

zbd0506
Aug 9, 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
- Has a cleansing oil-like texture - Feels slightly oily when applied - Contains a high concentration of niacinamide, which is good for those seeking high-dose niacinamide - Not irritating despite the high concentration - Didn't notice any significant improvements
Cons
- Small, white, crystalline particles can form on the serum's nozzle over time - Can cause sunscreen to peel off when used together - Has a distinct scent, but not unbearable - Didn't feel like it controlled oil production or significantly improved large pores
Tip
- Worth trying it out if you're curious - Can be used both day and night, but sunscreen is a must when using it during the day

이연째
Jul 8, 2024
Dry 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
This serum is a true solution for trouble, containing 15% niacinamide to address the root causes and traces of blemishes. As the weather gets warmer in the summer, I was looking for a serum that can control excess oil. This one absorbs without stickiness, leaving a moisturized and smooth finish that effectively manages oiliness. I highly recommend this summer serum, especially for those with combination/oily skin types.
Cons
But I'm not sure if it's just me, the serum seems to leave a film-like residue... even though I didn't apply a heavy toner.

편안한물까치804823
Jan 28, 2024
Dry 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 price is affordable, making it easy to use without burden.
Cons
After use, there is a tendency to smear, and the texture does not match the tip. It is too runny, often dripping and falling off the face.

Rrnv
Jan 13, 2024
Combination SkinSensitive 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
After absorption, there is no stickiness. A little oiliness was visible after some time of use.
Cons
It often feels like it's sliding off when applying. While applying, something like residue comes out on the hands and face.

lijisu
Dec 12, 2023
수부지Acne 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 product is thin and runny, applies well, and absorbs nicely. It's gentle and non-irritating.
Cons
The downside is that after applying this product in the morning and then sunscreen a few hours later, it can leave a residue.
Tip
Applying this product in the morning and then vitamin C serum in the evening has been effective.

최상여자
Aug 2, 2023
Oily 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
It flows like water, making it easy to control the amount and it doesn't feel sticky even when using a lot. It seems to help with pore management. Compared to vitamin C, there are fewer concerns and the formulation is not burdensome, making it a good antioxidant ampoule.
Cons
There is sometimes a feeling of it being pushed out like a pimple. There doesn't seem to be a noticeable efficacy.
Tip
For night care, I recommend: hyaluronic acid toner - niacinamide ampoule - retinol For a light routine, I recommend: Baha - niacinamide ampoule - moisturizer For summer daytime antioxidant routine, I recommend: toner - niacinamide ampoule - vitamin C (sunscreen is a must)

OOYOON
Jul 30, 2023
Combination SkinSensitive 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
These days, my skin condition has been getting worse, with excessive sebum and more pronounced peeling. No matter what product I use, it doesn't seem to have any effect, so even though it may be a bit irritating, I wanted to use a product that would actually be effective. After using it, my skin definitely became smoother and my sebum production decreased!! When I apply it after extraction, there is a stinging sensation, but I think this is what's providing the real effectiveness! I prefer products that give me some kind of sensation over ones that don't, because I want to see results.
Cons
If you fail to control the amount, it can spread like a rash, so I recommend not applying more than one dropper's worth.
Tip
To get even better results, apply it as the very first step in your skincare routine, after cleansing and removing excess water from your face. Gently press it into your skin to help it absorb fully, and finish up your routine.