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!

I haven't ever used a dedicated niacinamide serum prior to this one although I've used other skincare products containing niacinamide and admittedly, until I did a little research I didn't realize what a workhorse it is. It helps control sebum production for those with oily skin but it also manages to regulate hydration and provide barrier support for those (like myself) with dry skin. With consistent use it's also known for reducing redness and rough skin texture. I've only been using it a short time but so far it's agreeing with my skin and I appreciate that niacinamide is an ingredient that "plays well" with other skincare and can be layered with other serums of my choice without interfering with their efficacy. I definitely can see how this is a serum that can literally suit almost everyone.

Cosrx's Niacinamide 15 Serum is a game-changer. With 15% niacinamide, it's awesome for smoothing skin and minimizing pores. The serum feels light, not sticky, and works well for daily use. It's great at controlling oil and evening out skin tone. Just a heads up, if you have sensitive skin, maybe do a patch test.

This is a lightweight niacinamide serum that has a viscous like texture. It absorbs instantly into the skin. I like to use this combo when my skin is irritated. Great for soothing redness! My skin feels smooth after using this

It’s my first time trying put cosrx serums and I love it! This has worked wonders on my dry/oily skin. I also appreciate that it doesn’t leave such a sticky feeling.

I received this serum as a gift for my honest review. I have been using this product daily in the morning and I noticed a significant improvement in the of my skin. I love how lightweight the formula. It’s absorbs easily into the skin. My skin became clear , glassy feeling , and looking good. I am really glad to have this and recommended!

it has 15 percent of niacinamide so i wouldn’t recommend it for sensitive skin type but it does a great job for fading acne scars

Helps improve dark spots and overall tone. The zinc also helps with breakouts. The allantoin helps with irritation and the acetylglucosamine helps exfoliate and smooth the skin. What a product that packs so much benefits!

I’ve used several products from this line and they are all fabulous!

Niacinamide it's great for oil control and to minimize pores and sebum. This Serum has an oily silky texture I love it it leaves your skin with an amazing glow and even the next day you wake up and your face is glowy I super love it this ingredient is a must if you want to minimize the pores on your skin. You can also combine this ingredient with retinol so I love it.

This serum is suitable for people having concers with pigmentation. It is good for your acne and can be used daily.

Highly recommended, This is the third times I buy this product. It made my skin look healthier and my pore getting better.

وصف نياسينمايد منCOSRX مصل عالي التركيز يجمع بين الحد الأقصى لتركيز النياسيناميد والنسب المثالية للمكونات التآزرية للتحكم الكامل في حب الشباب. حل مخصص يحتوي على المكونات الضرورية للعناية الكاملة بحب الشباب نياسيناميد عالي التركيز بنسبة 15% ملمس خفيف ومنعش سريع الامتصاص الاستخدام المقترح بعد التنظيف، خلال مرحلة المصل، ضعي بضع قطرات على الجلد. استخدمي أطراف الأصابع لتدليك المصل بلطف وامتصاصه، بدءًا من داخل الوجه وحتى الحواف. * يمكن استخدامه صباحاً و/أو مساءً

Can’t go wrong with any Cosrx products. They really work and great on the price.

I absolutely love the product, it works amazing

My first time to try this hopefully it will be good.

It’s okay runs out quite quick haven’t seen much a difference

Awesome. Love everything. Will order more

very nice, u can see results after like a week and a half

hey bugged me a lot, but once I started using this stuff, my wrinkles went away! I was shocked! Not to mention a lot of the dull texture in my skin is gone. Now my skin looks so plump and soft. I also really love the packaging.

It has a light as water liquid formulation that absorbs quickly to leave the skin feeling refreshed and calmed. This highlyconcentrated 15% Niacinamide serum cares all about acne and effectively controls excess sebum and tightens pores. This serum brightens my skin tone and improves my skin texture.

Great combo for my extremely oily skin controls sebum production through the day really well. My must have for summer

I love love love love

i've been tried this serum for about 1 weeks day and night. i didnt get any negative experiences when i used the product. after a week used i can see my pores got smaller, my skin texture became smoother and firm than before, i'll continue the usage to make sure another claim. for you all who've been obsessed with niacinamide absolutely should try this product. you can get this product in their official online or offline store to make sure you get the original.

One of my fave products. Love it so much

I ordered this serum along with their vitamin c serum because niacinamide and vitamin c is a match made in heaven, so I have my hopes high, cosrx never disappoints..will update