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COSRX Letter of Authorization for Beauty Barn

COSRX The Niacinamide 15 Serum 20ml

MRP: Earn 296 Reward Points

(3 customer reviews)

42 in stock

Introducing Cosrx’s coveted new Rx line!

With a high concentration of 15% niacinamide, this is your next go-to serum for soothing pesky breakouts and blemishes. This serum targets acne during all stages of its formation, by controlling excess sebum and helping to tighten up the pores with the help of zinc.


  • 15% niacinamide helps improve the skin’s texture and complexion by fading dark spots.
  • 1% zinc pca helps soothe active breakouts and prevent future ones, by targeting excess sebum.
  • 2% acetylglucosamine helps gently exfoliate the skin to refine the texture.

How To Use: After cleansing, apply a few drops to the skin. Use fingertips to gently massage and absorb the serum. Can be used morning or night.

Expiry date: 19.10.2026


Country of Origin: South Korea

Manufacturer: ANCORS CO., Ltd.

Address: 56-24, Gajangsaneopseo-ro, Osan-si, Gyconggi-do, Republic of Korea

Importer: Beauty Barn

Address: 983/18, Tajen Ao Road, Dimapur – 797112, Nagaland, India

Packer: ANCORS CO., Ltd.

Address: 56-24, Gajangsaneopseo-ro, Osan-si, Gyconggi-do, Republic of Korea


Water, Pentylene Glycol, Niacinamide(15%), Butylene Glycol, Acetyl Glucosamine, 1,2-Hexanediol, Zinc PCA, Trehalose, Xanthan Gum, Pullulan, Allantoin, Ethylhexylglycerin, Sodium Phytate, Citric Acid, Tocopherol

Shipping & Handling


  • We charge a shipping fee of ₹70 for orders below ₹1499 and free shipping for all orders above ₹1499.


  • HOW IT WORKS: Once our system processes your order, your products are inspected thoroughly to ensure they are in a perfect condition.
  • After they pass through the final round of quality check, they are packed and handed over to our trusted delivery partner.
  • Our delivery partners then bring the package to you at the earliest possible. In case, they are unable to reach your provided address or at a suitable time, they will contact you to resolve the issue.
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We ensure your orders are dispatched within a few hours of order (before 10a.m on working days) to upto two working days.

Packaging and Damage

Beauty barn maintains a very high level of quality control and till date, we have received minimal complaints about the quality of our packaging.
Furthermore, less than 0.02% 0f our products we ship are returned to us as damaged. To ensure your products remain undamaged during the shipping process, each individual product is packaged in bubble wrap while fragile items like bottles are safely secured with additional bubble wrap, which are then packaged in boxes which are wrapped in plastics.
We pride ourselves on the quality of our packaging. Till date, we have received minimal complaints about damaged products due to our packaging.

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3 reviews for COSRX The Niacinamide 15 Serum 20ml

  1. ridah.ar

    I really really wanted to like this product. I’ve used niacinamide for a couple of months now and then shifted to this one. I’m almost certain it’s irritating my skin as the concentration of niacinamide in this is too high. Niacinamide work perfectly well at 2-5%, my skin can handle even 10% but 15% is too much.

  2. claudiahun502

    This!!! It absorbs into the skin like whooshhh literally a dream and adds an instant glow.I can definitely feel the difference in my skin after incorporating this in my skincare. It helps me with sebum control,I’m not yet sure about its impact on the pores but it definitely helped lighten up my acne scars and gave an overall glow . I Highly recommend this!

  3. Shasha

    I got this serum as a gift after participating in a Beautybarn event. Thank you to the team at Beauty Barn for organizing such great giveaway and events! And also for providing us with wonderful range of skincare products!

    Now, coming back to the serum, I love how hydrating this serum is. It is really light weight and sinks into skin easily. It makes my pores appear less visible and also helps in controlling excessive sebum/oil.

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