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  5. [COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
4.7
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F**a
·
Verified purchase
US
Hopefully works good Not satisfied with its liquid size,because it's exactly half content of the bottle size 🤔 I'll update!
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2026-01-30
J**l
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Verified purchase
US
I blend this with the Belif Hydration Bomb moisturizer, and it’s remarkably effective in clearing up my dark marks. However, I do have a slight complaint: it’s not as viscous as other Niacinamide serums I’ve used in the past, which were thicker.
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2025-03-22
J**a S**
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Verified purchase
US
It arrived at time. I can’t wait to use it 🤩
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2024-09-18
b**n
·
Verified purchase
US
Esto es parte de mi vida juntos con el acido tranexamico créanme es lo mejor
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2026-02-06
🫧**🫧
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Verified purchase
US
I was so excited for this but the serum got hard and jelly like and is stuck in the dropper. It’s so thick and grainy I think I got an old expired one :( I can’t use it bc it makes my other serums peel.
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2025-12-01
u**8
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Verified purchase
US
have had issues with my eyes snd do not want to put anything new on my face.
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2025-07-04
N**e
·
Verified purchase
US
Para mí la mejor niacinamida me encanta se absorbe súper fácil y mis poros dilatados han disminuido ya voy por el 3 frasco creo que no cambiare de producto mi niacinamida preferida
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2025-06-26
s**5
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Verified purchase
US
Este producto me gusta mucho súper bien para eskincare lo recomiendo se usa antes de usar el protector solar
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2025-06-25
F**z
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Verified purchase
US
This is my 4th refill on this serum. This is the only Niacinamide serum I’ve used that has minimized my pores, texture, and slight discoloration. Will be my favorite for a while!
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2025-06-24
** A**l ** R**e **
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Verified purchase
US
Use the Niacinamide with the Vitamin C 23 and the Peptide 6 w/ snail mucin and my skin is amazing!!
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2025-05-18
J**e B**5
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Verified purchase
US
Using this product for the past year and I have been very satisfied that I keep on going back and buying the same product
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2025-03-19
M**e H**r H**h S**t
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Verified purchase
US
Working very well at controlling oil. Not experiencing burning as certain other niacinamide products do.
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2025-02-20
M**e H**r H**h S**t
·
Verified purchase
US
Has been extremely helpful & gentle in clearing sebum from my very oily skin! Brace for a purge once you start using the product!
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2024-12-06
G**u
·
Verified purchase
US
Me encantan los productos de esta línea tengo aproximadamente un mes de estarlos utilizando y creo que ya no usaré otra marca más 🤩
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2024-11-30
e**e ᥫ**
·
Verified purchase
US
used this before I like how it feels and i notice differences had to re purchase jejejejejeje
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2024-09-30
L**a p**o 5** 🍀**️
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Verified purchase
US
Excellent Thank ⭐️⭐️🎈🎈
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2025-07-10
g**t
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Verified purchase
US
Excelente producto! Lo recomiendo 💯
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2025-06-17
N**❌
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Verified purchase
US
Just got it I love the consistency
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2025-04-05
i**o
·
Verified purchase
US
It helped which my pores alott?
Item:
Default
2024-07-26
o**o
·
Verified purchase
US
Real results,I love it.
Item:
Default
2025-09-24
About this product
Details
BrandCOSRX
Dangerous Goods Or Hazardous MaterialsNo
Flammable LiquidNo
Allergen InformationN/A
Container TypeBottle
BenefitsBrightening
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Product description
[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare[COSRX Official] The Niacinamide 15 Serum 20ml - Reduces Oily Skin, Shrinks Pores & Refines Skin Texture for Korean Glass Skin, Poreless Face, Skincare
1. Redness Relieving Serum: Refine Pores, Smoothen Skin, Relieve Redness. The Niacinamide and Zinc PCA instantly improves skin texture and radiance by reducing excess oil and minimizing pore sizes.
2. Key Benefits: Based on real results from consumers' self-assessments, the Niacinamide 15 Serum minimizes pore size, improves skin texture, and helps fade dark spots.
3. Dermatological Ingredients: 15% Niacinamide helps minimize enlarged pores and refine uneven skin tone. Zinc PCA prevents potential breakouts from occurring.
4. How to Use: Apply 2-3 drops once or twice daily. For daytime wear, follow up with SPF 30+ sunscreen. Can be applied under the eye area; avoid direct eye contact.
COSRX Standards: All COSRX products are formulated with skin-friendly ingredients that alleviate irritated skin. Hypoallergenic, Dermatologist tested, Animal Testing-FREE, Parabens-FREE, Sulfates-FREE, Phthalates-FREE.
5. NOTICE: Please be informed that the expiration date on the product is written in the South Korean format, which goes by Year/ Month/ Date. For instance, if the expiration date on the package is 2024.11.15, this refers to November 15, 2024.
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Creator earns commission
Bestie… this serum erased my pores. COSRX Niacinamide 15 is so strong but still so gentle. It smooths texture, controls oil, calms redness, and literally gives me winter glass skin. #cosrx #niacinamide #glassskin #skincaretips #holidayhaul
Auntie Al
940
Creator earns commission
This is the strongest niacinamide formula COSRX makes — and it WORKS. Texture, acne, redness, pores… all smoother. I’m obsessed. #cosrx  #affordableskincare #clearskin #koreanskincare #holidayhaul
11:11 Auntie Al
870
Creator earns commission
favorita de mi vida
Cristina
664
Creator earns commission
Mi rutina de noche 🫶 #gril#routine#sckincareroutine#corxsnailmucin
Soficrm
534
Creator earns commission
Nhờ niaciamide mà da mình nhỏ lỗ chân lông và căng mướt @cosrx_kr #cosrx #niacinamide #miasdiary  #skincare
Mia’s Diary 🎀(ig: miahv86)
480
Creator earns commission
Maquillate conmigo en 8 minutos ♥️ ¿Qué paso no hacias?👀 IG: andrefitmonsalve  #mujereslatinas #tutorial #makeuptutorial #milkmakeup #tips #tipparaojerassecas
ANDREFITMONSALVE
403
Creator earns commission
These are two of my favorite products to keep my skin clear and acne free 🤍✨ @COSRX Official @COSRX US  #COSRX #COSRXDermSkincare #GlassSkin #MirrorSkin #Kbeauty #TotalAcneCare #AcneDermSerum #Niacinamide #AcneSolution #Peptide #PatThePeptide #skincare
Karla Celis
361
Creator earns commission
COSRX OFFICIAL The Niacinamide ❤️❤️#foryou #tiktokshop #cosrx @COSRX US
SANTOSH SUSHILA
332
Creator earns commission
@COSRX Official #Niacinamide #Active #SkinCare #CleanSkinCare #GoodSkinCare #SkinCareAct #VitaminB
Beauty By Carisa TM
314
Creator earns commission
This #Niacinamideserum keeps me smooth, fresh, and free from pores. Honestly, the only serum I can’t live without  🔥😍 #COSRX #fypシ #foryoupage #learnontiktok
judi_380🇺🇸
306
Creator earns commission
COSRX Niacinamide Serum for Only $13.99!!! 🔥🔥🤯 #viraltiktok #tiktokshop #glowingskin #skincare #foryou
judi_380🇺🇸
281
@CatLady Store_ Create a clear, smooth canvas that will take your skin expression one step further, from #GlassSkin to #mirrorskin ✨✅ #cosrx #cosrxusa #koreanskincareproducts #grwm #niacinamide #selfcare
COSRX US
275
Paid partnership
So excited about this! @COSRX US @COSRX Official #COSRX ##cosrxdermskincare##Peptide##PatThePeptide##Niacinamide##NiacinamideSerum##AcneSolution
Sheri❤️Derek✨Coaches
259
Creator earns commission
Sharing my skincare secret & HOLY GRAAAAIL!!!!! #naicinamide #cosrx #cosrxniacinamide #clearskin #skincare @COSRX Official
Queenxmelissa
251
Creator earns commission
Este ingrediente de skincare no puede faltar en mi rutina, NIACINAMIDE por eso quise probar este serum al 15% de  @COSRX US #niacinamideserum #niacinamide #serumfacial #serum #cuidadodelapiel
Nino Rodriguez
216
Creator earns commission
#manugurung10 #cosxr #niacinamide #refinespores #smoothenskin #treat #acene #scar #reduces #sebum #suppresses#imflammation #reduces #inflamation #brightens #skintone #tiktokahop #fypage #forepage #fypシ゚viral
Gurungko chori
180
Creator earns commission
Morning routine ☀️ #niacinamide #serum #morningroutine #tiktokshopsummersale #fyp #𝐓𝐢𝐤𝐓𝐨𝐤𝐒𝐡𝐨𝐩𝐃𝐞𝐚𝐥𝐬𝐟𝐨𝐫𝐲𝐨𝐮𝐝𝐚𝐲𝐬 #dealsforyoudays #TikTokShopBackToSchool
Manjita Shrestha
176
Creator earns commission
This are two skin care routines am and pm  using only one Brand Cosrx   Korean Beauty is giving us amazing products at mow cost #SKIN #skins #skincare #beauty #cosrx #retinol #niacinamide @COSRX US @COSRX Official @cosrx  @evasachsdesigns  @evasachsdesigns  @evasachsdesigns
evasachsdesigns
158
Creator earns commission
Clear skin, Clear mind 🫶🏻 @COSRX Official @COSRX US #COSRX #COSRXDermSkincare #GlassSkin #MirrorSkin #Kbeauty #TotalAcneCare #AcneDermSerum #Niacinamide #AcneSolution #Peptide #PatThePeptide
Jenny 🌸🎀
143
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