Woooow very nice … thanks aloot

Amazing product it soothes my skin very well

It’s really a great product i can see the results in a week

The serum is good very easy to blend and fast absorbed

Wont repurchase because I haven’t noticed a big difference yet

I like the texture but still haven’t seen any difference I’ll keep using it until i finish it but probably won’t repurchase it

nothing special in terms of instant results of any kind. been using for about 12days now. Absorbs into skin well

My skin fell in love with this this.. It cleared up my dark marks within 2 weeks of using once per day (night)

Excited to use it but arrived having spilled and unsure of how much of the content is left.

Doesn’t see any difference much after using for 2 months. Give a little bit hydration. No smell and irritation.

It makes my skin glowy from the first use the next morning, I strongly recommend it, strong concentration will irritate sensitive skins, brightened my skin and good for hyperpigmintation and oil controlling.

I use this product every other day and it leaves my oily skin less oily throughout the day while giving me a nice glow! I have noticed a difference in how less oily my skin is after using this. I would re purchase. I use this during the day time.

First time for me that use but make me feel love so much.

[TMRM]So I have been on and off with this niacinamide serum. I haven’t seen much difference it could be because I am not on the oilier side and my pores are mainly around my nose area. This serum is water weight so skin should absorb this quite easily. 15% for niacinamide is still on a higher side, but I haven’t had any irritation while using this.

Haven’t tried it but Cosrx great brand I love

I have oily sensitive acne prone skin. The texture is amazing, lightweight perfect for humid environments, it is non irritating as well. Even after the first few applicatiodns my skin was noticeably smoother and less red. After the first night I didn’t even get new pimples. Over all amazing product, 10/10 would recommend

It was good and made my skin really smooth especially in the morning

It's really amazing how such highly concentration niacinamide serum 15% but yet so nice on skin doesn't irritating skin at all لطيف جدا على البشرة ولا يسبب اى التهاب تهيج

I love the serum. It helps a lot on my uneven skin. I normally use it at day timeN The COSRX Niacinamide Serum has contributed to a smoother complexion, refining the texture of my skin over time.

15 is pretty high for sensitive skin, it irritated my skin

great for sensitive skin! makes the skin so supple :)

didn’t really like it it’s a little harsh for my sensitive skin

Discovering The Niacinamide 15 Serum has been a revelation for my skincare routine. This serum is a game-changer for anyone dealing with oily or acne-prone skin. With its high concentration of niacinamide, it has significantly reduced the appearance of my pores and controlled excess oil production without causing any dryness. I’ve noticed a visible improvement in my skin’s texture, making it smoother and more balanced. The lightweight formula absorbs quickly and layers well under other products. If you’re searching for an effective niacinamide serum that tackles oily skin concerns, this one deserves a spot in your routine!

The Niacinamide 15 serum Acetyl Glucosamine + Zinc PCA This 15% niacinamide facial product is great for minimizing enlarged pores, it provides quick relief from acne redness, I recommend it for skin with acne breakout problems because it improves very quickly, causing acne to reduce.

I noticed that my pores have shrunk and the spots have changed texture. It absorbs quickly. for about 1 week,At night, it's good to be able to try niacinamide. The best way to apply it is after cleansing. It reduces discoloration and hyperpigmentation.  

This is my holy grail product for brightening and lightening dark spots and hyperpigmentation. I used it every night after the 6 Peptide Booster for 2 weeks now and my acne spots are slowly going away.

COSRX's Niacinamide 15 Serum has proven to be a game-changer in my skincare routine. Its 15% concentration of niacinamide works wonders in controlling oiliness and minimizing pores. This serum's calming effect has significantly reduced breakouts, contributing to a more balanced complexion. The lightweight formula effortlessly integrates into my routine, allowing for easy layering with other products. Over time, I've observed a visible improvement in overall skin texture. If you're on the hunt for an effective niacinamide serum that tackles various concerns, COSRX has crafted a winner with this product. Highly recommended for a clearer and more refined complexion.

It's awesome for smoothing skin and minimizing pores, and it helps with excess sebum. The serum has a wholesome effect on improving skin condition, keeping the skin barrier happy. This serum helps to improve overall skin clarity, especially targeting acne-prone skin. Also, Niacinamide can help fade hyperpigmentation on the skin. The serum feels light, not sticky, and works well for daily use.

I really enjoyed using this product as a part of my daily beauty routine. When I use this before applying makeup or without makeup, this serum gives my skin q beautiful flushing glow. I also noticed an improvement and reduction of fine lines and dullness to my skin over time. After a week of use, my skin appeared more even and bright. This is a great targeted skin serum, I love this.

Usually niacinamide breaks me out like crazy, but this one is different. It actually keeps my nose from getting too oily, and tbh that’s all I use it for. So I believe it’s doing its job!