COSRX The Niacinamide 15 Serum 20ml
SKU: 71603808625

COSRX The Niacinamide 15 Serum 20ml

Sale price$19.80 Regular price$22.00
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  • USA
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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For Your Every Summer RSVP, with Code: SUMMER15

Description

COSRX The Niacinamide 15 Serum 20mlCOSRX The Niacinamide 15 Serum delivers targeted support for acne prone skin with a clinically high 15% concentration of niacinamide, effectively reducing inflammation and regulating sebum production for a clearer complexion. We value this serum for its precise formulation that balances potent, synergistic ingredients to enhance skin clarity and strengthen the skins barrier function. The lightweight texture absorbs quickly, leaving the skin feeling

COSRX The Niacinamide 15 Serum delivers targeted support for acne-prone skin with a clinically high 15% concentration of niacinamide, effectively reducing inflammation and regulating sebum production for a clearer complexion.

We value this serum for its precise formulation that balances potent, synergistic ingredients to enhance skin clarity and strengthen the skin’s barrier function. The lightweight texture absorbs quickly, leaving the skin feeling hydrated without any residue or heaviness, making it suitable for layering within a skincare routine.

Key Ingredients:

  • Niacinamide (15%): Reduces inflammation, minimises pores, and regulates excess sebum to control acne breakouts.
  • Acetyl Glucosamine: Promotes skin brightening and evens out skin tone by supporting natural exfoliation.
  • Zinc PCA: Helps balance oil production while providing antimicrobial properties to prevent further blemishes.

How to Use:

  1. Apply 2-3 drops to clean, dry skin after cleansing and toning.
  2. Gently pat the serum across the face, focusing on areas prone to blemishes.
  3. Follow with moisturiser and sunscreen during the day.

The Ritual Tip: For optimal results, incorporate this serum into both morning and evening routines consistently, and allow it to fully absorb before layering other products to maximise its anti-inflammatory and pore-minimising effects.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71603808625

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4.9 ★★★★★
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Mlnkjns
Grantham, US
★★★★★ 4
Great sunblock.
Set name: Stick - 0.5 oz.
Love this stuff. It’s the only sunscreen that doesn’t sting my eyes. It works really well. It goes a long way. Lil dab will do ya. Maybe I use too much each application. I live in Florida and put it on my arms and face everyday. It does leave white smudges, smears and handprints on things.
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Reviewed in the United States on May 10, 2026
D
Verified Purchase
Deanna Yanda
Whiting, US
★★★★★ 5
Fabulous product! Made my skin feel soft!
Set name: Tube - 5 oz.
This product goes on smooth and a little goes a long way. I used it today for the first time and was very pleased that it held up to my sweating in the heat doing farm work! It doesn’t bother my very sensitive skin, in fact it is quite soothing. A little goes a long way. With about a quarter size amount I was able to do both arms and my face. I was outside for several hours and didn’t burn like I usually do. It is basically unscented which is nice and isn’t sticky.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
K
Verified Purchase
Kylie
Houston, US
★★★★★ 5
Great for sensitive skin
Set name: Tube - 3 oz.
Live the blue lizard products! Easy to apply, blends into skin without white cast. If applied regular no burning. Great protection. I also have sensitive skin and no issues using this
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
W
Verified Purchase
Waci Isnala
Lexington, US
★★★★★ 5
Great for very sensitive skin!
Set name: Tube - 3 oz.
Use this every day. It's my primer. Lol I have extremely sensitive skin to the point where one wrong move lands me in the ER. This worked for me. Slight greasiness but works well for me as I can't wear foundation. This at least hydrates and protects. Love it.
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Reviewed in the United States on May 23, 2026
J
Verified Purchase
JDauray
Waukegan, US
★★★★★ 5
Great drinkware
Size: 100PCS, Color: 12oz Silver
Purchased these for a party. They worked out well. They did not crack or break easily. They held up. Good weight of plastic, strong, sturdy. There is no off taste. They look nice. They're an appropriate size. Very happy with this purchase.
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Reviewed in the United States on March 18, 2026

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