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(1773)1773

The Niacinamide 15 Serum

COSRX

$25.00Current Price $25.00
0.67 Ounce
2 people viewing now
Select fulfillment method
GET $40 OFF next purchase + 5% off every Rack purchase with a Nordstrom credit card. Terms apply. Apply Now

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Highlights

  • Good for: Acne & blemishes
  • Good for: Dark spots
  • Good for: Redness

Details & care

What it is: A total acne care serum formulated with 15% niacinamide.

Who it's for: Ideal for all skin types.

What it does: The highly concentrated serum combines maximum concentration of niacinamide with optimal ratios of synergistic ingredients for total acne control. It is noncomedogenic and won't clog pores.

Research results:
In a clinical trial on 20 subjects, over 4 weeks:
- 45.27% improvement of activated sebaceous glands
- 48.07% improvement of oil synthesis amount
- 42.72% improvement of number of blackheads
- 50% improvement of number of whiteheads
- 15.50% improvement of hidden melasma and blemishes
- 19.47% improvement of pigmentation (visible melasma and blemishes)
- 2.59% improvement of triple-complexion skin tone (brightness)
- 24.89% improvement of triple-complexion skin tone (redness)
- 11.73% improvement of triple-complexion skin tone (yellowness)

How to use: After cleansing, during the serum phase, apply a few drops of the Niacinamide serum to the skin. Use fingertips to gently massage and absorb the serum, starting from the center of the face, working towards the edges. Use the serum in the morning, evening or afternoon. If applied during the morning/day, be sure to use sunscreen with an SPF of 30 or higher.

  • 0.67 oz.
  • Item #10133858
  • Core Product ID 3333337DXZ

Shipping & returns

This item qualifies for free shipping on orders over $89. View Shipping & Returns Policy.

This item is returnable within 40 days by mail or to U.S. Nordstrom Rack and U.S. Nordstrom stores. All beauty items are only eligible for return in U.S. Nordstrom Rack or U.S. Nordstrom stores.

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Reviews

(1773)
4.5 out of 5
Write a Review

Most helpful positive review

Aug 5, 2026
Nighttime routine
[This review was collected as part of a promotion.] Serum feels light weight. It has helped with the lines on my face and the overall appearance of my skin. Love using it during my nighttime routine.
Yvette M.
Reposted from cosrx

Most helpful critical review

Sept 13, 2024
Not worth it. All the
[This review was collected as part of a promotion.] Not worth it. All the products that claim to help acne are garbage. They caused more irritation and acne rather than helping. Also, it caused my skin to be so dry and leave white cast as if they added high amount of alcohol. not good.
ritika g.
Reposted from cosrx

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5 stars
64%
4 stars
24%
3 stars
8%
2 stars
2%
1 star
1%
Sort by Most Helpful
Size
Yvette M.
Reposted from cosrx
Aug 5, 2026
Nighttime routine
[This review was collected as part of a promotion.] Serum feels light weight. It has helped with the lines on my face and the overall appearance of my skin. Love using it during my nighttime routine.
Yazmin C.
Reposted from cosrx
July 1, 2026
Love this product, it really
Love this product, it really helps keep my acne under control.
Puja A.
Reposted from cosrx
June 19, 2026
Its good
[This review was collected as part of a promotion.] Its good
Susan C.
Reposted from cosrx
June 15, 2026
I love the product, it
[This review was collected as part of a promotion.] I love the product, it lighten up my skin ,fine wrinkles disappeared, moisturizes my skin for the whole day. Highly recommended.
Michelle G.
Reposted from cosrx
June 13, 2026
This is the most powerful
[This review was collected as part of a promotion.] This is the most powerful niacinimide serum that I’ve used. It gives that glass skin perfection and makes skin look poreless
Kelley T.
Reposted from cosrx
June 13, 2026
I have only been using
[This review was collected as part of a promotion.] I have only been using this for a few weeks and have noticed improvements. I love the way it makes my skin look, hydrated and glowing. A little goes a long way. I layer this product on top of the snail mucin.
Load 6 more reviews

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