Skip navigation

GET $40 OFF your next purchase when you apply and get approved for a Nordstrom credit card. Restrictions apply. Apply Now

Sign In

  • All Clearance
  • Clearance Under $25

  • New Markdowns

  • Women
  • Men
  • Kids
  • Shoes
  • Bags & Accessories
  • Home
  • Beauty
  • Women

  • Clothing
  • Shoes
  • Handbags
  • Accessories
  • Jewelry
  • Beauty
  • Men

  • Clothing
  • Shoes
  • Accessories
  • Kids

  • Girls' Clothing
  • Girls' Shoes
  • Boys' Clothing
  • Boys' Shoes
  • Baby
  • Bags & Accessories

  • Shoes

  • Designer

  • Home

  • Beauty

Shop Now
  • All New & Now
  • Father's Day Gifts

  • Summer Style Essentials

  • New From Our Top Brands

  • Top 100 Deals

  • Just Landed from Nordstrom

  • Linen Shop

  • Vacation & Resort

  • Women

  • Clothing
  • Shoes
  • Handbags
  • Jewelry & Watches
  • Accessories
  • Men

  • Clothing
  • Shoes
  • Accessories
  • Kids

  • Girls
  • Boys
  • Baby
  • Home

  • Beauty

  • Trending

  • Women's Bold Color
  • Women's Preppy Style
  • Women's Ruffle & Lace Details
  • Men's Baggy Jeans
  • Men's Preppy Style
  • Jelly Shoes
  • Beaded Accessories
  • Coastal Chic Accessories
  • Soccer Style
  • Flash Events

  • Marc Jacobs Up to 50% Off
  • Diane von Furstenberg Up to 60% Off
Father's Day Gifts
  • All Women
  • New Arrivals

  • Best Sellers

  • Summer Essentials

  • Linen Shop

  • Trending: Preppy Style

  • Trending: Ruffle & Lace Details

  • Trending: Bold Colors

  • Nordstrom Made

  • Clearance

  • Clothing

  • Activewear
  • Coats & Jackets
  • Dresses
  • Jeans & Denim
  • Jumpsuits & Rompers
  • Lingerie, Hosiery & Shapewear
  • Matching Sets
  • Pajamas & Loungewear
  • Pants & Leggings
  • Shorts
  • Skirts
  • Suits & Separates
  • Sweaters
  • Sweatshirts & Hoodies
  • Swimsuits & Cover-Ups
  • Tops
  • Plus-Size Clothing
  • Shoes

  • Athletic & Sneakers
  • Boots & Booties
  • Comfort
  • Flats
  • Heels
  • Loafers
  • Oxfords
  • Sandals
  • Slippers
  • Handbags

  • Sunglasses & Eyewear

  • Jewelry & Watches

  • Accessories

  • Beauty

  • Shop by Occasion

  • Concert & Festival
  • Night Out
  • Vacation & Resort
  • Wear to Work
  • Wedding Guest
  • Designer

  • Contemporary

  • Young Adult

Shop Now
  • All Men
  • Father's Day Gifts

  • New Arrivals

  • Best Sellers

  • Linen Shop

  • Golf Shop

  • Summer Essentials

  • Sunglasses Under $100

  • Trending: Baggy Jeans

  • Trending: Preppy Style

  • Clearance

  • Clothing

  • Activewear
  • Blazers & Sport Coats
  • Coats & Jackets
  • Dress Shirts
  • Jeans & Denim
  • Joggers & Sweatpants
  • Lounge, Pajamas & Robes
  • Pants
  • Polo Shirts
  • Shirts
  • Shorts
  • Suits & Separates
  • Sweaters
  • Sweatshirts & Hoodies
  • Swimwear & Board Shorts
  • T-Shirts
  • Underwear & Socks
  • Shoes

  • Athletic & Sneakers
  • Boots
  • Comfort
  • Designer
  • Dress Shoes
  • Loafers & Slip-Ons
  • Oxfords & Derbys
  • Sandals & Flip-Flops
  • Slippers
  • Accessories

  • Bags & Backpacks
  • Belts & Suspenders
  • Hats
  • Sunglasses & Eyewear
  • Ties & Pocket Squares
  • Watches
  • Dresswear Shop

  • Contemporary

  • Designer

  • Young Adult

  • Big & Tall

  • Grooming & Cologne

  • Shop by Occasion

  • Concert & Festival Outfits
  • Vacation & Resort
Shop Vacation
  • All Kids
  • Back to School: Kids

  • New Arrivals

  • Best Sellers

  • Swim Shop

  • Kids' Matching Sets

  • Kids' Value Packs

  • Summer Essentials

  • Sneakers Under $25

  • Clearance

  • Girls' Clothing

  • Toddler Girls (Sizes 2T-4T)
  • Little Girls (Sizes 4-6x)
  • Girls & Tweens (Sizes 7-20)
  • Girls' Accessories

  • Boys' Clothing

  • Boys (Sizes 4-7)
  • Boys (Sizes 8-20)
  • Toddler Boys (Sizes 2T-4T)
  • Boys' Accessories

  • Baby Apparel & Accessories

  • Baby Girl Clothing (0-24M)
  • Baby Boy Clothing (0-24M)
  • Unisex Baby Clothing (0-24M)
  • Baby Gear & Essentials
  • Baby Shower Gifts
  • Baby's First
  • Kids' Shoes

  • Baby & Walker Shoes
  • Toddler (Sizes 7.5-12)
  • Little Kid (Sizes 12.5-3)
  • Big Kid (Sizes 3.5-7)
  • Girls' Shoes
  • Boys' Shoes
  • Shop by Occasion

  • Special Occasion
  • Vacation & Resort
  • Toys

  • Disney & Character Shop

Kids' Sneakers
  • All Shoes
  • Back to School for All: Shoes

  • New Arrivals

  • Best Sellers

  • Party Shoes

  • Trending: Jelly Shoes

  • Trending: Western Boots

  • Sandals Under $50

  • Contemporary Brands

  • Designer Brands

  • Golf Shoes

  • Summer Essentials

  • Clearance

  • Women's Shoes

  • Athletic & Sneakers
  • Boots
  • Booties
  • Clogs
  • Comfort
  • Flats
  • Heels
  • Loafers
  • Mules
  • Oxfords
  • Sandals
  • Slippers
  • Extended Sizes & Widths
  • Men's Shoes

  • Athletic & Sneakers
  • Boots
  • Comfort
  • Designer
  • Dress Shoes
  • Loafers & Slip-Ons
  • Oxfords & Derbys
  • Sandals & Flip-Flops
  • Slippers
  • Extended Sizes & Widths
  • Kids' Shoes

  • Baby & Walker Shoes
  • Toddler (Sizes 7.5-12)
  • Little Kid (Sizes 12.5-3)
  • Big Kid (Sizes 3.5-7)
  • Girls' Shoes
  • Boys' Shoes
  • Athletic & Sneakers
  • Boots
  • Dress
  • Sandals
  • Kids' Shoes Size Chart

  • Shoe Care & Accessories

Shop Sandals
  • All Bags & Accessories
  • New Arrivals

  • Best Sellers

  • Travel Must-Haves

  • Trending: Beaded Accessories

  • Trending: Coastal Chic

  • Designer Sunglasses Under $200

  • Handbags Under $100

  • Watches Under $200

  • Clearance

  • Women's Accessories

  • Belts
  • Hats
  • Sarongs, Caftans & Cover-Ups
  • Scarves
  • Women's Handbags

  • Backpacks
  • Bag Charms
  • Clutches & Pouches
  • Crossbody Bags
  • Shoulder Bags
  • Tote Bags
  • Wallets
  • Women's Jewelry

  • Bracelets
  • Earrings
  • Jewelry & Watch Sets
  • Necklaces
  • Rings
  • Women's Fine Jewelry

  • Bracelets
  • Earrings
  • Necklaces
  • Rings
  • Under $150
  • Men's Accessories

  • Bags & Backpacks
  • Belts & Suspenders
  • Hats
  • Jewelry & Cufflinks
  • Wallets & Card Cases
  • Sunglasses & Eyewear

  • Watches

  • Luggage & Travel

  • Carry-On
  • Checked Luggage
  • Hardside Luggage
  • Softside Luggage
  • Designer

  • Designer Handbags
  • Designer Sunglasses & Eyewear
  • Designer Watches
  • Nordstrom Made

Shop Sunglasses
  • All Beauty
  • Father's Day Cologne & Grooming Gifts

  • New Arrivals

  • Best Sellers

  • Top Rated Beauty

  • Beauty Deals Up to 60% Off

  • Beauty Under $25

  • Summer Beauty Must-Haves

  • Clearance

  • Fragrance

  • Body Mist & Hair Mist
  • Candles & Diffusers
  • Cologne
  • Designer Fragrance
  • Fragrance Gift Sets
  • Perfume
  • Roller Ball & Travel Size
  • Makeup

  • Eyes
  • Face
  • Lips
  • Tools & Brushes
  • Bath & Body

  • Skin Care

  • Cleansers
  • Eye Creams & Treatments
  • Face Mists & Toners
  • Facial Masks
  • Moisturizers
  • Serums
  • Sunscreen
  • Tools & Devices
  • Hair Care

  • Hair & Scalp Treatments
  • Hair Accessories
  • Hair Dryers & Styling Tools
  • Hairstyling Products
  • Shampoo & Conditioner
  • Textured Hair Care
  • Gifts & Sets

  • Travel & Mini Sizes

  • Designer Beauty

  • Brushes, Tools & Devices

  • Men's Grooming & Cologne

  • Oral Care

  • Nails

  • Wellness & Self-Care

  • KBeauty

  • FSA/HSA Eligible Beauty

  • Top Brands

  • Anastasia Beverly Hills
  • Burberry
  • Calvin Klein
  • Charlotte Tilbury
  • Clinique
  • Dolce & Gabbana
  • Gucci
  • Kitsch
  • L'Occitane
  • Le Monde Gourmand
  • MAC Cosmetics
  • Marc Jacobs
  • NEST New York
  • Too Faced
Fragrance
  • All Home
  • Father's Day Home Gifts

  • New Arrivals

  • Best Sellers

  • Outdoor Living

  • Home Decor Under $50

  • Travel Must-Haves

  • Home Refresh

  • Cozy Home Shop

  • Housewarming Gifts

  • Wedding & Engagement Gifts

  • Clearance

  • Bedding

  • Comforters & Sets
  • Duvet Covers & Inserts
  • Pillows
  • Quilts
  • Sheet Sets
  • Blankets & Throws

  • Bath

  • Bath Rugs & Mats
  • Bath Towels
  • Bathroom Decor
  • Shower Curtains
  • Home Decor

  • Candles & Diffusers
  • Decorative Accessories
  • Decorative & Throw Pillows
  • Faux Plants & Stands
  • Rugs & Doormats
  • Kitchen & Tabletop

  • Bar Accessories
  • Cookware & Bakeware
  • Cutlery & Kitchen Knives
  • Drinkware & Glassware
  • Meal Prep
  • Small Appliances
  • Luggage & Travel

  • Electronic & Tech Accessories

  • Water Bottles & Tumblers

  • Storage & Cleaning

  • Pet Accessories

  • Nordstrom Made

Shop Now
  • All Gifts
  • Top Rated Gifts

  • Gift Cards

  • Father's Day Gifts

  • Top 100 Gifts
  • Golf & Active Gifts
  • Watches & Accessory Gifts
  • Cologne & Grooming Gifts
  • Tech, Lounge & Home Gifts
  • Gifts by Recipient

  • Gifts for Her
  • Gifts for Him
  • Gifts for Kids & Babies
  • Gifts for Teens
  • Gifts for the Home
  • Gifts for the One Who Has Everything
  • Gifts by Price

  • Gifts Under $25
  • Gifts Under $50
  • Gifts Under $100
  • Luxe & Designer
  • Gifts by Occasion

  • Baby Shower Gifts
  • Bridesmaid Gifts
  • Groomsmen Gifts
  • Housewarming Gifts
  • Wedding & Engagement Gifts
Father's Day Gifts
Main content
  1. Home
  2. Women
COSRX The Niacinamide 15 Serum, Main, color,
COSRX The Niacinamide 15 Serum, Alternate, color,

The Niacinamide 15 Serum

COSRX

$25.00Current Price $25.00
0.67 oz
GET $40 OFF next purchase + 5% off every Rack purchase with a Nordstrom credit card. Terms apply. Apply Now

Similar items you might like

  • COSRX The Alpha-Arbutin 2 Discoloration Care Serum
    COSRX
    $25.00Current Price $25.00
  • COSRX The Retinol 0.1 Cream
    COSRX
    $27.00Current Price $27.00
  • COSRX The Vitamin C 23 Serum
    COSRX
    $25.00Current Price $25.00
  • COSRX The Hyaluronic Acid 3 Serum
    COSRX
    $25.00Current Price $25.00
See More

Highlights

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

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

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.

Gift options

Write a gift message at Checkout and we'll email it to the recipient when their item is delivered
Need help finding the perfect gift? We've got you covered.
Shop Gifts

Reviews

(1769)
4.5 out of 5
Write a Review

Most helpful positive review

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
Michelle G.
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

Customer photos

Add your photo & review

Share your photo to help other shoppers.

5 stars
63%
4 stars
24%
3 stars
8%
2 stars
2%
1 star
1%
Sort by Most Helpful
Size
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.
Carolyn A.
Reposted from cosrx
June 9, 2026
I am thrilled with this
[This review was collected as part of a promotion.] I am thrilled with this Niacinimide serum and can’t believe how quickly it has benefited my skin. After just a couple of applications I noticed that my skin was clearer and smoother. It is perfect for my combination skin. I have tried several other products to improve my complexion but none have had the positive impact as this serum. I highly recommend it.
Gaurav S.
Reposted from cosrx
May 26, 2026
Jus t started using this.
[This review was collected as part of a promotion.] Jus t started using this. Cannot comment just in the frist week.
Sade K.
Reposted from cosrx
May 23, 2026
Just added this to my
[This review was collected as part of a promotion.] Just added this to my routine have been using the clearing pads for years and along with this new product my skin is looking even better. I will continue to buy!
Paigen J.
Reposted from cosrx
May 9, 2026
CosRx is my favorite affordable
[This review was collected as part of a promotion.] CosRx is my favorite affordable skincare!! This stuff is great - works well for my husbands backne!
Load 6 more reviews

Frequently Bought Together

  • COSRX Vitamin E Tocopherol Broad Spectrum 50+ Sunscreen
    COSRX
    $23.00Current Price $23.00
    (552)
  • COSRX Advanced Snail Mucin Glass Glow Hydrogel Mask
    COSRX
    $15.00Current Price $15.00
    (34)
  • Saturday Skin Yuzu Vitamin C & Water Blossom Serum
    New
    Saturday Skin
    $23.00Current Price $23.00
  • C.O. Bigelow Marvis Mint Toothpaste
    C.O. Bigelow
    $10.50Current Price $10.50
    (40)
  • AQUASONIC Black Series Ultra Sonic Whitening Electric ToothBrush Set
    AQUASONIC
    $39.95Current Price $39.95
    (71% off)71% off.
    $139.99Comparable value $139.99
    (222)
  • TOUCHLAND x Disney Wild Watermelon Hand Sanitizer & Mickey Mouse Mist Case Set
    TOUCHLAND
    $20.00Current Price $20.00
    (2)
  • TOUCHLAND Power Mist Hydrating Hand Sanitizer
    TOUCHLAND
    $10.00 – $12.00Current Price $10.00 to $12.00
    (42)
  • NEUTROGENA Body Oil, Light Sesame Formula For Dry Skin
    NEUTROGENA
    $24.97Current Price $24.97
    (1966)
  • Supergoop!® Play Everyday Lotion SPF 50 Sunscreen
    Supergoop!®
    $12.00 – $28.00Current Price $12.00 to $28.00
    (Up to 25% off select items)Up to 25% off select items.
    $12.00 – $28.00Comparable value $12.00 to $28.00
    (2300)
  • Vacation SPF 50 Super Spritz Face Mist Sunscreen
    Vacation
    $8.00 – $22.00Current Price $8.00 to $22.00
    (451)
  • AHAVA Mineral Radiance Cleansing Gel
    AHAVA
    $9.97Current Price $9.97
    (64% off)64% off.
    $28.00Comparable value $28.00
  • AHAVA Ocean Mist Hand Cream
    AHAVA
    $9.97Current Price $9.97
    (63% off)63% off.
    $27.00Comparable value $27.00
  • Kiehl's Since 1851 Ultra Facial Cleanser
    Kiehl's Since 1851
    $16.00 – $26.00Current Price $16.00 to $26.00
    (1040)
  • SKIN1004 Madagascar Centella Probio-Cica Enrich Cream
    SKIN1004
    $24.00Current Price $24.00
    (2616)
  • Patchology Rosé Toes Foot Mask
    Patchology
    $11.00Current Price $11.00
    (153)
  • Kopari Sunglaze Sheer Body Mist Sunscreen SPF 42
    Kopari
    $39.00Current Price $39.00
    (427)
  • Kiehl's Since 1851 Midnight Recovery Concentrate
    Kiehl's Since 1851
    $34.00 – $140.00Current Price $34.00 to $140.00
    (535)
  • SKIN1004 Madagascar Centella Soothing Cream
    SKIN1004
    $16.00Current Price $16.00
    (417)
  • SKIN1004 Madagascar Centella Ampoule
    SKIN1004
    $16.50Current Price $16.50
    (134)
  • Kopari On-The-Glow Sheer SPF 40 Sunscreen Stick
    Kopari
    $30.00Current Price $30.00
    (96)
  • Kiehl's Since 1851 Ultra Facial Cream
    Kiehl's Since 1851
    $26.00 – $115.00Current Price $26.00 to $115.00
    (1042)
  • L'Occitane Lavender Shower Gel
    L'Occitane
    $25.00Current Price $25.00
    (11)
  • NEUTROGENA Rainbath Pear & Green Tea Refreshing Shower & Bath Gel
    NEUTROGENA
    $15.97Current Price $15.97
    (428)
  • Klairs Midnight Blue Youth Activating Drop
    Klairs
    $30.00Current Price $30.00
    (1)
See More
Earn a $25 or $50 promo card when you buy $150 or $250 in gift cards online. Ends June 21.Earn a $25 or $50 promo card when you buy $150 or $250 in gift cards online. Ends June 21.

Treat Dads & Grads: Earn a $25 or $50 Promo Card

When you buy $150 or $250 in gift cards online. Promo card will be emailed around July1 and is good through August 9. Restrictions apply.
Shop Gift CardsSee Restrictions
Download the Nordstrom Rack app.Download the Nordstrom Rack app.

Download Our App

And save big with alerts on price drops, new arrivals and more. Plus, Nordy Club members can access new app-exclusive perks!
Download Our App
Get free shipping on most orders over $89.Get free shipping on most orders over $89.

Free Shipping on Most Orders over $89

Plus, 40-day returns: by mail or free to U.S. stores.
Learn More
Apply today: get $40 off your next purchase plus an extra five percent off for cardmembers. A hand holding a credit card.Apply today: get $40 off your next purchase plus an extra five percent off for cardmembers. A hand holding a credit card.

$40 Off Your Next Purchase

Just apply and get approved for a Nordstrom credit card. Plus, get 5% off every Rack purchase when you use your credit card. Terms apply.
Apply Now
Help support Operation Warm. Two little girls smiling and wearing colorful coats.Help support Operation Warm. Two little girls smiling and wearing colorful coats.

Help Rack Help Kids

Join us in supporting Operation Warm, a nonprofit giving brand-new shoes and coats to kids.
Learn More & Donate Now

Get Rack Emails

Get the good stuff—new arrivals from Nordstrom, new markdowns, private sales and more.
Learn More
A new Rack store.A new Rack store.

New Nordstrom Rack Stores

Is your neighborhood on the list?
Find Your New Rack
Anniversary Sale Coming Soon. Starts July 18.Anniversary Sale Coming Soon. Starts July 18.

Save the Date: Nordstrom Sale Starts July 18

Get your wish list ready! Preview the deals on July 6 at noon ET. Cardmembers shop as early as July 14. New arrivals. Sale prices. Let’s party!
Learn More

You're in!

Stay tuned for the latest updates on new arrivals, special offers and more - all delivered straight to your inbox.

Privacy Policy

Get Email Updates:

Customer Service

  • Order Status
  • Guest Returns
  • Shipping & Return Policy
  • Gift Cards
  • Product Recalls
  • FAQ
  • Contact Us

About Us

  • About Our Brand
  • The Nordy Club
  • Store Locator
  • All Brands
  • Careers
  • Get Email Updates
  • Nordy Podcast
  • Store Openings

Nordstrom Rack & the Community

  • Our Impact
  • People & Culture

Nordstrom Card

  • Apply for a Nordstrom Card
  • Pay My Bill
  • Manage My Nordstrom Card

Nordstrom, Inc.

  • Nordstrom
  • HauteLook
  • Investor Relations
  • Press Releases
  • Nordstrom Media Network
Download Our App
  • Privacy
  • Your Privacy Rights
  • Terms & Conditions
  • California Supply Chains Act
  • ©2026 Nordstrom Rack