
Enjoy fast, free delivery, exclusive deals, and award-winning movies & TV shows with Prime
Try Prime
and start saving today with fast, free delivery
Amazon Prime includes:
Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.
Amazon Prime members enjoy:- Cardmembers earn 5% Back at Amazon.com with a Prime Credit Card.
- Unlimited Free Two-Day Delivery
- Streaming of thousands of movies and TV shows with limited ads on Prime Video.
- A Kindle book to borrow for free each month - with no due dates
- Listen to over 2 million songs and hundreds of playlists
- Unlimited photo storage with anywhere access
Important: Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership.
-
-
-
-
-
-
-
8 VIDEOS
-

Image Unavailable
Color:
-
-
-
- To view this video download Flash Player
COSRX 15% Niacinamide Face Serum, 0.67 fl oz, Pore Minimizer Serum for Face, Even Skin Tone, Korean Skin Care
Learn more
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Bundles with this item
Purchase options and add-ons
Skin Type | Oily, Acne Prone, Combination |
Product Benefits | Rejuvenating |
Use for | Face |
Scent | No Artificial Fragrance |
Special Ingredients | antioxidants |
About this item
- 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.
- Key Benefits: Based on real results from consumers' self assessments, the Niacinamide 15 Serum minimizes pore size, improves skin texture.
- Dermatological Ingredients: 15% Niacinamide helps minimize enlarged pores and refine uneven skintone. Zinc PCA prevents potential breakouts from occurring.
- 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.
- Patch Test Recommended: Perform a patch test on the body before using on the face. Proceed to using on the face if no irritation occurs in 24 hours. Consult with your doctor immediately if irritation occurs.
Frequently bought together

Frequently purchased items with fast delivery
From the brand

-
-
-
Experience Perfect Parings
-
See COSRX All Best Sellers
-
Product Description


Our Brand Story
COSRX believes that cosmetics should give more than just outward beauty. We are devoted to enabling individuals to find solutions according to their personal skin conditions. We strive to help our customers gain self-confidence, and ultimately find their own unique beauty inside.

Featured in
COSRX has been featured in multiple prominent magazines and our products have received praise from many trusted editors. As proven by the countless articles that have been released, COSRX will continue to listen to the voices of our customers and strive to improve.
-
Can this be used on sensitive skin?
Based on a Primary Dermal Irritation Study (on 30 subjects for 24 hours) the “COSRX The Niacinamide 15 Serum” is found to be a non-irritant product that causes no irritation for sensitive skin.
-
How do I know if this product is authentic?
To ensure the authenticity of the product, please make sure you are purchasing the product from COSRX Inc. The authenticity of the product cannot be promised when purchased from sellers other than COSRX Inc.
Product details
- Product Dimensions : 4 x 4 x 6 inches; 3.53 ounces
- Item model number : COS-048
- Manufacturer : Cosrx
- ASIN : B09ZYB8S31
- Best Sellers Rank: #2,718 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care)
- #75 in Facial Serums
- Customer Reviews:
Compare with similar items
This Item ![]() COSRX 15% Niacinamide Face Serum, 0.67 fl oz, Pore Minimizer Serum for Face, Even Skin Tone, Korean Skin Care | Recommendations | |||||
Try again! Added to Cart spCSRF_Treatment Add to cart | Try again! Added to Cart spCSRF_Treatment Add to cart | Try again! Added to Cart spCSRF_Treatment Add to cart | Try again! Added to Cart spCSRF_Treatment Add to cart | Try again! Added to Cart spCSRF_Treatment Add to cart | Try again! Added to Cart spCSRF_Treatment Add to cart | |
Price | -21% $19.75$19.75 List: $25.00 | -12% $18.39$18.39 List: $21.00 | $25.00$25.00 | -18% $20.40$20.40 List: $25.00 | $16.99$16.99 | $12.99$12.99 |
Price Per Unit | $29.48 / Fl Oz | $27.45 / Fl Oz | $3.81 / Fl Oz | $30.45 / Fl Oz | $16.99 / Fl Oz | $7.64 / Ounce |
Delivery | Get it as soon as Saturday, May 3 | Get it as soon as Saturday, May 3 | Get it as soon as Saturday, May 3 | Get it as soon as Saturday, May 3 | Get it as soon as Saturday, May 3 | Get it as soon as Saturday, May 3 |
Customer Ratings | ||||||
Sold By | FULLYNESS | COSRX | COSRX | FULLYNESS | Naturium | Nailkiss Store |
skin type | Acne Prone, Oily, Combination | Sensitive | All | All | Acne Prone, Combination, Sensitive, Dry, Normal | All |
active ingredients | Niacinamide, Zinc | ascorbic acid,vitamin c,vitamin e | — | betaine,ceramide,glycerin,glyceryl acrylate,pentylene glycol,propanediol,serine,sodium hyaluronate,sodium lactate,sodium pca | hyaluronic acid,niacinamide,vitamin b3,vitamin e,zin,zinc | — |
form | Drop | Drop | Drop | Drop | Gel | Cream |
volume | 20 milliliters | 20 milliliters | 50 milliliters | 100 milliliters | 30 milliliters | 1.7 fluid ounces |
recommended uses | Anti-aging | Brightening,Hydrating,Provides Vitamins,Wrinkles | — | Hydrating,Wrinkles | Focus,Provides Vitamins,Wrinkles | — |
Videos
Videos for this product
0:34
Click to play video
LOOK at my SKIN! After using COSRX Niacinamide 15MamaOf4Fishy
Videos for this product
1:01
Click to play video
Our Point of View on COSRX Niacinamide 15% Face SerumWTI | We Tried It!
Videos for this product
0:53
Click to play video
Honest Review of COSRX Niacinamide Face Serum✅ Billy Aiken
Videos for this product
0:25
Click to play video
COSRX Niacinamide 15% Serum- Watch it work!COSRX
Important information
Safety Information
For external use only. Avoid contact with eyes. Keep away from naked flame or direct heat sources.
Indications
Pore Minimizer
Ingredients
Water, Pentylene Glycol, Niacinamide, Butylene Glycol, Acetyl Glucosamine, 1,2-Hexanediol, Zinc PCA, Trehalose, Xanthan Gum, Pullulan, Allantoin, Ethylhexylglycerin, Sodium Phytate, Citric Acid, Tocopherol
Directions
Take a pea-sized amount (about 3-4 drops) of a face serum from the dropper onto your palms. (For best results, you can use a vitamin C serum.).
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the serum effective, noting it works better than expensive alternatives, and appreciate its benefits for skin tone, texture, and appearance, with one customer reporting visible results after the first use. The serum helps control oily skin and reduces pore size, with some customers reporting pores on their cheeks becoming almost nonexistent. Customers disagree on whether the product is suitable for sensitive skin, and while some find it hydrating, others report it can be drying.
AI-generated from the text of customer reviews
Customers find the serum effective, noting that it works better than expensive alternatives.
"...expensive for less than an ounce of product, but worth the financially questionable decision...." Read more
"...Despite its potency, with proper usage and gradual introduction into a skincare routine, it can become a staple for achieving clearer, brighter skin." Read more
"...is necessary to see full results, this serum has proven to be a powerful ally in reducing hyperpigmentation and enhancing my skin's overall health...." Read more
"The quality of this product is amazing! Forever will be part of my routine...." Read more
Customers report positive results with this serum, noting improvements in skin tone, texture, and control of oily areas, while being effective even for sensitive skin.
"...absolutely does visibly reduce pores, oiliness, and redness after a few weeks. Works great under makeup, not sticky or pilly at all...." Read more
"...The high concentration of niacinamide helps to reduce the appearance of dark spots and redness, leading to a more even complexion...." Read more
"...Its high concentration of niacinamide, known for its skin brightening and texture-improving properties, has genuinely started to transform my..." Read more
"...My skin does okay with it but there is a little stinging. This will be one Cosrx product I likely won't reorder...." Read more
Customers report that the serum makes their skin feel smooth and soft, with one customer noting a glassy finish.
"...observed a reduction in the size of their pores and an overall smoother skin surface. **Results**:..." Read more
"...of niacinamide, known for its skin brightening and texture-improving properties, has genuinely started to transform my complexion...." Read more
"...niacinamide with propolis--it doesn't irritate my skin and it feels wonderful going on...." Read more
"...Poor choice. Immediately reordered this. My skin is so soft and my pores are significantly smaller almost immediately when using this. Great value...." Read more
Customers report positive results with this serum, noting that it helps minimize pores, particularly on cheeks and nose, and prevents clogged pores.
"...It is very calming and hydrating, absolutely does visibly reduce pores, oiliness, and redness after a few weeks...." Read more
"...Many have also observed a reduction in the size of their pores and an overall smoother skin surface. **Results**:..." Read more
"...Additionally, the serum has effectively minimized the appearance of enlarged pores and provided relief from redness, enhancing my skin's overall..." Read more
"...This controls oil, minimizes the appearance of pores, and gives overall hydration...." Read more
Customers like the appearance of their skin after using the serum, noting it looks better with a nice shine and even skin tone, while appreciating the beautiful black bottle design.
"...dealing with issues like hyperpigmentation, large pores, and uneven skin tone. Here's a detailed review of its features and performance: **..." Read more
"...My makeup sits beautiful on top of it as well if I decide to use it in the mornings. It doesn't make me break out, either! Thank goodness!!..." Read more
"...The glass bottle/dropper is nice though and I’ll be repurposing it (the label came off easy with little to no residue as well!)..." Read more
"...My complexion looks brighter and more even, which is exactly what I was hoping for...." Read more
Customers love the serum's glow-enhancing properties, noting that it brightens their complexion and lightens dark spots.
"...of 15% niacinamide, a form of vitamin B3 known for its brightening and anti-inflammatory properties...." Read more
"...incorporating this serum into my regimen has been the visible reduction in dark spots and overall skin discoloration...." Read more
"...My skin seemed softer and had more of a glow...." Read more
"The product gives a glow in face. It’s incredible." Read more
Customers have mixed experiences with how the serum affects their skin, with some reporting it doesn't irritate sensitive skin at all, while others find it makes their skin oily and not suitable for sensitive skin.
"...My skin does okay with it but there is a little stinging. This will be one Cosrx product I likely won't reorder...." Read more
"...Noticeable improvements in skin texture and tone - Suitable for sensitive skin - Free from harmful additives **Cons**: -..." Read more
"...So, my skin is very oily, extremely sensitive, with enlarged pores and melasma...." Read more
"It makes my face feel sticky but it starts working in a week it make your face look clear and soft" Read more
Customers have mixed experiences with the serum's hydration properties, with some finding it very hydrating and gentle, while others report that it dries out their skin.
"...It is very calming and hydrating, absolutely does visibly reduce pores, oiliness, and redness after a few weeks...." Read more
"...Not only was my face cherry red all day long, but it dried out my skin in certain areas, AND because I did not bring it close to my eyes or lips,..." Read more
"...The hydrating elements in the serum help maintain the skin's moisture barrier, preventing dryness and irritation. **Packaging**:..." Read more
"...This controls oil, minimizes the appearance of pores, and gives overall hydration...." Read more
Reviews with images

Softest my skin has EVER felt!
Top reviews from the United States
There was a problem filtering reviews. Please reload the page.
- Reviewed in the United States on March 24, 2025Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseI love it, way too expensive for less than an ounce of product, but worth the financially questionable decision. It is very calming and hydrating, absolutely does visibly reduce pores, oiliness, and redness after a few weeks. Works great under makeup, not sticky or pilly at all. As with all niacinamide it only works while you are using it, if you stop, the results do not continue, so take note of that, but it's to be expected.
- Reviewed in the United States on June 28, 2024Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseThe COSRX Niacinamide 15% Face Serum is an impressive addition to any skincare routine, particularly for those dealing with issues like hyperpigmentation, large pores, and uneven skin tone. Here's a detailed review of its features and performance:
**Ingredients and Formula**:
The serum boasts a potent concentration of 15% niacinamide, a form of vitamin B3 known for its brightening and anti-inflammatory properties. Additionally, the formula includes other beneficial ingredients such as panthenol (pro-vitamin B5) for hydration, and allantoin to soothe the skin. The serum is free from parabens, sulfates, and artificial fragrances, making it suitable for sensitive skin.
**Texture and Application**:
The texture of the serum is lightweight and slightly viscous, which allows for easy application without feeling greasy or sticky. It absorbs quickly into the skin, making it convenient for both morning and evening routines. The dropper bottle ensures precise dispensing, minimizing product waste.
**Performance**:
Users report noticeable improvements in skin texture and tone after consistent use. The high concentration of niacinamide helps to reduce the appearance of dark spots and redness, leading to a more even complexion. Many have also observed a reduction in the size of their pores and an overall smoother skin surface.
**Results**:
With regular application, typically over a few weeks, the serum effectively diminishes hyperpigmentation and brightens the skin. It also aids in controlling excess sebum production, which can be beneficial for those with oily or acne-prone skin. The hydrating elements in the serum help maintain the skin's moisture barrier, preventing dryness and irritation.
**Packaging**:
The product comes in a sleek, minimalist bottle with a dropper for easy and hygienic application. The opaque bottle design protects the serum from light exposure, preserving the integrity of the ingredients.
**Pros**:
- High concentration of niacinamide
- Lightweight, non-greasy formula
- Noticeable improvements in skin texture and tone
- Suitable for sensitive skin
- Free from harmful additives
**Cons**:
- The 15% niacinamide concentration may be too potent for some, potentially causing initial irritation for sensitive skin types. It's advisable to perform a patch test before incorporating it fully into your routine.
**Conclusion**:
The COSRX Niacinamide 15% Face Serum is a powerful and effective solution for those looking to tackle hyperpigmentation, uneven skin tone, and enlarged pores. Its well-formulated blend of ingredients offers visible results without compromising on skin hydration or comfort. Despite its potency, with proper usage and gradual introduction into a skincare routine, it can become a staple for achieving clearer, brighter skin.
- Reviewed in the United States on April 15, 2024Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseThis product I can honestly say has been a remarkable addition to my skincare routine, particularly in addressing my longstanding battle with hyperpigmentation and uneven texture that comes with maturing skin. Its high concentration of niacinamide, known for its skin brightening and texture-improving properties, has genuinely started to transform my complexion. Sense I only apply once per day that’s pretty impressive in my book.
From first use, the serum impressed me with its lightweight texture that absorbs seamlessly into the skin, leaving no sticky residue. This feature is particularly important to me, as it allows for easy layering with other products, and sense I apply daily at night it’s an important feature.
One of the most noteworthy outcomes I've experienced since incorporating this serum into my regimen has been the visible reduction in dark spots and overall skin discoloration. My hyperpigmentation has gradually become less pronounced, revealing a more even skin tone that I've been striving to achieve for years. Additionally, the serum has effectively minimized the appearance of enlarged pores and provided relief from redness, enhancing my skin's overall clarity and texture. I haven’t noticed a difference in the overall moisture or hydration of my skin but it was never my intention anyway.
What sets this product apart for me is not only its efficacy but also its gentle formula. Despite the high concentration of niacinamide, my sensitive skin has tolerated it well without any signs of irritation or dryness. This is a significant advantage, as many potent skincare treatments can be too harsh for delicate skin..
After consistent use, the improvements in my skin are undeniable. While patience is necessary to see full results, this serum has proven to be a powerful ally in reducing hyperpigmentation and enhancing my skin's overall health. I would highly recommend giving it a go if your looking to reverse hyperpigmentation or smooth out pores it’s definitely a product worth incorporating into your routine!
- Reviewed in the United States on November 9, 2024Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseWhile I love Cosrx, this niacinamide may be a little too strong for my rosacea-prone skin. My skin does okay with it but there is a little stinging.
This will be one Cosrx product I likely won't reorder. I instead use Beauty of Joseon's niacinamide with propolis--it doesn't irritate my skin and it feels wonderful going on.
Also, this is less than an ounce and my BOJ is 1.01 ounces and costs less. Though, Cosrx is not pricey at all - very reasonable prices. If it didn't sting my face, I'd probably reorder to use alternate days with BOJ.
- Reviewed in the United States on April 13, 2025Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseI've been using this every night for a few weeks and I absolutely love it! I have oily skin, large pores, and some rosacea. This controls oil, minimizes the appearance of pores, and gives overall hydration. My makeup sits beautiful on top of it as well if I decide to use it in the mornings. It doesn't make me break out, either! Thank goodness!! I highly recommend this product!
- Reviewed in the United States on April 5, 2025Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseThe quality of this product is amazing! Forever will be part of my routine. I used it once (entire bottle), then switched to something else-for no good reason. Poor choice. Immediately reordered this. My skin is so soft and my pores are significantly smaller almost immediately when using this. Great value. Light scent. Not sticky. No irritation. I will continue purchasing
Top reviews from other countries
- DollyReviewed in the United Kingdom on December 9, 2024
5.0 out of 5 stars Excellent product
Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseI would recommend everyone to purchase this product as it helps to soften skin,skinlook,Hydration,Effectiveness,Smell etc….. worth purchasing the product i give 5 star rating to it.
- ZaidiReviewed in India on June 29, 2024
5.0 out of 5 stars Cosrx niacinamide
Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseGood serum have been using for a while now and have seen a drastic change in scars, very hydrating no stickiness my pigmentation has also reduced to a great extent
-
Linck linckReviewed in France on February 6, 2025
5.0 out of 5 stars Sérum taches brunes pigmentaires peaux matures
Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseJ ai des tâches pigmentaires du a quelques boutons et melasma .
Après plusieurs traitements prescris par des dermatologues (que j ai suivi vigoureusement) depuis quelques années maintenant j en avais marre d avoir cette tâche brune sur mon visage ..me suis dis je perds quoi ? 20 balles en gros contre 100 voir plus ( préparations prescrites par mes dermatologues non remboursées) ..le colis arrive bien fermer..
J ai commencé ma routine un soir ( dimanche)
Je lave mon visage puis je sèche en tapotant avec un linge propre
J applique le toner de la même marque sur peau humide et je met ce sérum et enfin je boucle tout avec la crème de la même marque .. je fait cela depuis dimanche, nous sommes jeudi a l heure où j écris le commentaire
Ce matin en me levant ... Ma peau cette tâche.. cette tâche brune qui m as pourri depuis maintenant 4 ans est casiment parti .. alors que j avais acheté ce produit sans trop y croire mais me suis dis pk pas !
Vraiment je suis choquée des résultats et en bien je conseille cette marque Corsx ( j'y connais rien en cosmétique truc genre )
A noter que je suis métisse ma peau est normal et sujette à des boutons d acnés hormonal je suis en pleine pre menaupose
J ai une peau mature avec quelques rides
Ben franchement je vous conseille cette game de produit mais surtout ceux a la bave Escargot combiné avec le sérum résultats magique
Par contre moi je met une crème solaire ou un brume solaire après ma routine du matin ..
Je ne dois pas être exposé au rayon du soleil ni ceux de la lune... maladie génétique orpheline rare...
Je rachèterai ce flacon chez ce vendeur car c est le vendeur officiel
- Michelle Corsame TirolReviewed in Australia on February 9, 2025
5.0 out of 5 stars Cosxs
Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseGood product
- Sharon mariyaReviewed in Saudi Arabia on March 25, 2025
2.0 out of 5 stars Got pimples after 1st use
Size: 0.67 Fl Oz (Pack of 1)Verified PurchaseVery oily...not suitable for oily skin...got pimples after 1st use
Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.