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![[COSRX] COSRX The Niacinamide 15 Serum 20ml](//glowyk.com/cdn/shop/files/A00000018089002ko.jpg?v=1781096513&width=1200)
![[COSRX] COSRX The Niacinamide 15 Serum 20ml](//glowyk.com/cdn/shop/files/A00000018089006ko.jpg?v=1781096513&width=1200)
![[COSRX] COSRX The Niacinamide 15 Serum 20ml](//glowyk.com/cdn/shop/files/A00000018089004ko.jpg?v=1781096514&width=1200)
![[COSRX] COSRX The Niacinamide 15 Serum 20ml](http://glowyk.com/cdn/shop/files/A00000018089002ko.jpg?v=1781096513&width=1200)
![[COSRX] COSRX The Niacinamide 15 Serum 20ml](http://glowyk.com/cdn/shop/files/A00000018089006ko.jpg?v=1781096513&width=1200)
![[COSRX] COSRX The Niacinamide 15 Serum 20ml](http://glowyk.com/cdn/shop/files/A00000018089004ko.jpg?v=1781096514&width=1200)
COSRX
The Niacinamide 15 Serum 20ml
$26.60
$30.34
Save 12%
Curated by GlowyK
Korea-sourced
Duties prepaid
Free Worldwide shipping over $70
Delivery estimate
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Add $43.40 more to unlock free shipping.
Pair this with another Daily Edit pick. Worldwide tracked shipping.
Estimated delivery: calculating...
Shipped directly from Seoul with full tracking.
Why GlowyK Chose It
Best for: Daily hydration & glow
- Sourced directly in Korea
- Carefully inspected before shipping
- Travel-friendly size
Product facts
No surprise fees — duties and import taxes are prepaid
Order support guarantee — damaged, defective, or wrong order? We'll make it right
Korea-sourced — selected for a focused GlowyK edit
Ships directly from Korea with tracking, usually 7–15 business days after dispatch
Details
Specifications
How to Use
Full Ingredients
Shipping, Guarantee & Authenticity
- Order support guarantee: If your order arrives damaged, defective, or wrong, we will issue a refund or replacement without asking you to ship it back to Korea.
- No surprise fees: All prices include import customs and taxes prepaid by us. The price at checkout is the final price you pay.
- Card checkout: Pay securely with a major credit or debit card through PayPal. A PayPal account is not required.
- Estimated delivery appears near the purchase button as a date range. Standard delivery is usually 7–15 business days after dispatch with full tracking; Express is usually 5–8 business days.
- Free Worldwide shipping on orders over $70 · $7.99 flat under.
- 100% Authentic K-Beauty: Sourced directly in Korea and carefully inspected before shipping.
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✨ At a Glance · key details from this product
Serum / Essence powered by Niacinamide
Best for: For use on all skin types
- ✔️Authentic, ships direct from Korea
- ✔️Brightening
Key ingredients
Niacinamide — brightening
ℹ️ Patch-test before first use · for external use only
Authentic K-Beauty
[COSRX] COSRX The Niacinamide 15 Serum 20ml
Discover this authentic K-Beauty product, shipped directly from Korea.
📋 Specifications
| Volume / Weight | 20ml |
| Skin Type | For use on all skin types |
| Expiration Date | Sold sequentially starting with products with an expiration date of more than 18 months as of the product shipment date (36 months from the date of manufacture / recommended for use within 12 months after opening) |
| Country of Origin | korea |
| Manufacturer / Distributor | NCOS Co., Ltd./COSRX Co., Ltd. |
💡 How to Use
After washing your face, at the serum stage, drop an appropriate amount on your face with your fingertips and let it absorb by rolling it with your fingertips from the inside to the outside of your face.
🌿 Ingredients
Purified water, pentylene glycol, niacinamide, butylene glycol, acetylglucosamine, 1,2-hexanediol, zinc PCA, trehalose, xanthan gum, pullulan, allantoin, ethylhexylglycerin, sodium phytate, citric acid, tocopherol.
⚠️ Warnings
1. If you experience any abnormal symptoms or side effects, such as red spots, swelling, or itching, due to direct sunlight when using or after using cosmetics, consult a specialist.
2. Refrain from using it on areas with wounds, etc.
3. Precautions for storage and handling
a) Store out of reach of children.
B) Store away from direct sunlight.
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COSRX$26.60