COSRX The Niacinamide 15 Serum Reviews
This Korean review was translated by AI and may contain inaccuracies.
743Reviews
- yo*********May 11, 2025Dry Skin
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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 texture is fluid-like and absorbs well! I'm using it in the first stage, even though I have dry skin.
Cons
There were no particular shortcomings, and while the effects have not yet appeared, I will try to use it consistently.
- hy*********May 7, 2025Combination SkinAcne SkinSebum/BlackheadsEnlarged PoresRedness
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
Thanks to the niacinamide ingredient, I feel like my blemishes have faded and my complexion has become clearer.
Cons
The serum is applied to the face not so much to address dryness, but rather to apply the niacinamide ingredient. It had a rather oily feel.
- yy*****May 6, 2025Combination 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
I bought it because I have a lot of pimples, get a lot of sebum, and have concerns about my pores. I have sensitive skin, so products often don't agree with me and cause pimples, but fortunately that hasn't been the case with this one.
Cons
The product feels more oily than expected, and it doesn't seem to absorb well. I'm the type that doesn't really suit products with an oily feel, so I end up not using them. I don't even reach for it anymore. I haven't seen any effects from it yet.
Tip
Used to mix into body lotion and apply to areas that get stained
- jy*****May 5, 2025Combination SkinSensitive SkinSebum/BlackheadsWrinkles/ElasticityEnlarged Pores
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 makes my skin feel so soft and smooth right away ㅜㅜ It also helps control blushing very well.
Cons
There's nothing but a slight sting! I've been using the product consistently since receiving the recommendation.
- ju*****May 4, 2025Dry SkinBrightening/Dark SpotsSebum/BlackheadsDark CirclesInner DrynessWrinkles/Elasticity
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 has good spreadability. I thought the watery formulation wouldn't absorb well, but it actually absorbs very well! And I felt it had a good effect on skin texture.
Cons
Cos RX is said to be famous, so I tried it, but the effects were not dramatically noticeable.
Tip
It would have been better to use it together with the vitamin serum.
- tn*******May 1, 2025Combination SkinSensitive SkinAcne SkinSebum/BlackheadsWrinkles/ElasticityEnlarged Pores
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'm on my second bottle as it's effective for whitening. I'm using it together with the niacinamide serum.
Cons
I'm still using it well and haven't found any unsatisfactory aspects yet
- ra*********May 1, 2025Combination SkinSensitive SkinSebum/BlackheadsDark CirclesEnlarged PoresRedness
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 Ordinary Niacinamide 10% seems like a much better product that I've started using this ingredient. 📌Formulation - It has a slightly sticky texture and a thick consistency. However, the stickiness was not unpleasant for me. 📌Hydration - As it is a functional ampoule rather than a hydrating one, it does not replenish moisture. 📌Effects - The sebum control effect is greater than expected. I haven't found the right cream yet, so there are times when my skin is oily, but using this product visibly helps control the excess oil. I haven't experienced any breakouts or issues, so after trying other ampoules, I plan to repurchase this one.
Cons
It's a bit inconvenient to squeeze out every last drop. The dropper handle is slightly small.
Tip
Niacinamide ingredient helps to provide additional moisture, so I recommend applying a little more serum or cream than usual.
- ap******May 1, 2025Combination SkinSensitive SkinAcne SkinBrightening/Dark SpotsInner DrynessWrinkles/ElasticityEnlarged PoresRedness
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 first applied this product on my bare face in the morning, but there was some makeup transfer during the day, so I've been alternating it with a vitamin C product in the evenings. 🤩 I've been using it for 2 months now. I've been applying it every morning for a week, but there was still some makeup transfer, so I've been using it on mornings when I don't wear makeup or on days when I don't use the vitamin C product. I haven't been using it consistently. 1️⃣ While I don't notice it right away, my skin does look a bit brighter the next day after using this product. It's likely due to the high 15% niacinamide content, which seems to have an effect on my skin. With consistent use, I do feel like my skin becomes more radiant. 2️⃣ This product is moisturizing on its own. It's not as long-lasting as hyaluronic acid products, but as a niacinamide serum, it's still quite hydrating. Those with oily or combination skin may be able to use this alone without a cream and not feel dry. However, I find the texture a bit watery, and over time, it can leave a film-like feeling on the skin. For drier skin types, I'd recommend using this with a hydrating ampoule or cream to prevent emphasizing fine lines and pores as the film-like effect wears off. 3️⃣ When I use this product, I don't experience any emphasizing of flaky skin, and my skin texture appears more refined. 4️⃣ The ingredients are gentle, and I haven't experienced any breakouts, excessive oil production, stinging, or redness.
Cons
1️⃣ The niacinamide ingredient has a viscous texture, causing the makeup to shift and making the skin expression appear slightly messy during application. While the product does not experience severe shifting, the shifting is often observed around the cheekbones and eye area, requiring frequent touch-ups, which can be inconvenient. 2️⃣ Even though I do not use it daily, the small volume compared to the price makes it difficult to purchase regularly, so I tend to wait for sales. 3️⃣ The fragrance is almost odorless, but there is a slight scent of glue and saliva. However, if one is not sensitive to fragrances, it is barely noticeable, and the lack of artificial fragrances that can cause headaches makes it acceptable for me to use. 4️⃣ I am unsure how many bottles I would need to see the full effects, but after using one bottle, I have not noticed significant improvements in skin issues, blemishes, or pores. 4️⃣ The short dropper makes it difficult to apply the product evenly across the entire face in a single application (perhaps due to the size of my face), requiring a second application, which can be inconvenient.
Tip
This product should be applied in the morning. To prevent makeup from sliding, do not apply too much. After applying, gently pat the skin and allow for a certain time interval before applying makeup.
- ma*******Apr 30, 2025Combination SkinAcne SkinBrightening/Dark SpotsSebum/BlackheadsRedness
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
My night routine items are so great. I just have to do them essentially. The next morning feels different.
Cons
Sensitive areas may cause severe irritation if applied. It is advisable to use with caution and allow the area to calm down before application.
- so****Apr 28, 2025Combination SkinSensitive SkinAcne SkinBrightening/Dark SpotsSebum/BlackheadsInner DrynessWrinkles/ElasticityEnlarged PoresDead Skin Cells
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 accidentally purchased the product at a discounted price through an event, and it turned out to be a perfect fit! The absorption was good, and my skin felt comfortable.
Cons
I'm not sure if it has any particular effects, but it's a bit disappointing that it just feels smooth and moisturizing without any real benefits.