COSRX The Niacinamide 15 Serum 20ml

Name: COSRX The Niacinamide 15 Serum 20ml
Brand: COSRX
SKU: COSRX-N15S-20ML
Price: 20.99 USD
Availability: InStock

$20.99

A high-strength niacinamide serum for visible pores, excess sebum, and uneven-looking skin tone.

✓Best for: Enlarged pores, excess sebum, uneven tone, dullness, oily or combination skin

✓Powered by: Niacinamide 15% and targeted sebum-balancing tone care

✓Feels like: Lightweight, concentrated, fresh, and easy to layer without a sticky finish

#NiacinamideSerum #PoreCare #SebumBalance

Free Shipping Over $69

100% Guaranteed Authenticity

Ships Directly from Korea

COSRX The Niacinamide 15 Serum is a lightweight clarifying serum designed to reduce excess sebum, improve the look of visible pores, and keep the skin feeling fresh and comfortable without heaviness.

Built with 15% niacinamide, 2% N-acetylglucosamine, 1% zinc PCA, and supportive soothing ingredients, this formula focuses on blemish-prone skin and oil-water balance while maintaining a light non-sticky finish. Current product pages describe it as a concentrated serum that helps regulate sebum production, support clearer-looking skin, and improve uneven texture without sacrificing hydration.

This serum works especially well for skin that feels oily, shiny, rough, or affected by visible pores and post-blemish marks and wants a daily balancing step with light hydration. It is a strong fit for all skin types, especially combination, oily, acne-prone, and pore-concerned skin.

• Texture: Lightweight serum with a fresh, non-sticky finish

• Skin Type: All skin types, especially combination, oily, acne-prone, and pore-concerned skin

• Best For: Excess sebum, enlarged pores, blemishes, uneven texture, and daily clarifying care

• Key Benefit: 15% niacinamide serum with pore-balancing care and fresh skin-refining support

• Volume: 20ml / 0.67 fl. oz.

• Origin: South Korea

• Helps reduce excess oil so skin feels fresher and more balanced.

• Supports smoother-looking skin by improving the look of enlarged pores and uneven texture.

• Helps support blemish-prone skin with concentrated daily niacinamide care.

• Supports a clearer-looking complexion by helping improve the look of post-blemish marks.

• Works well for people who want a high-strength niacinamide serum that still feels lightweight and easy to layer.

• Leaves skin feeling smooth, fresh, and comfortably balanced with regular use.

— Key Ingredients —

• Niacinamide (15%): Helps reduce excess sebum and improves the look of enlarged pores and uneven tone.

• N-Acetylglucosamine (2%): Helps support smoother-looking skin and improve the look of post-blemish discoloration.

• Zinc PCA (1%): Helps balance sebum and supports a fresher-looking skin condition.

• Allantoin + Tocopherol: Help keep skin comfortable while reinforcing the formula’s skin-conditioning support.

— Full List —

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

• Step 1: After cleansing, apply a few drops to the skin.

• Step 2: Gently spread and pat to help absorption.

• Step 3: Follow with moisturizer.

• Tip: Use when skin feels oily, congested, or pore-prone and needs a fresh daily balancing step.

FAQs

Authenticity is our top priority. All items are sourced exclusively from highly trusted, authorized supply chains and official distributors in South Korea. We strictly verify, carefully inspect, and securely package every single product to guarantee 100% authenticity and optimal freshness before it leaves our facility.

We ship worldwide directly from our fulfillment operations in South Korea. We offer a flat rate of $6.99 for orders under $69, and provide 100% Free Shipping for orders $69 and above. Delivery typically takes 7–14 business days, depending on your local customs clearance and location.

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You can request a cancellation within 24 hours of placement, provided the order has not yet been processed for shipping. For returns, we accept items within 7 days of delivery, provided they are completely unopened, unused, and in their original packaging. Please note that for all returns, the customer is responsible for all associated costs, including original shipping, return shipping, and any customs clearance fees. Contact our support team at info@seoul-luma.com with your order number to initiate the process.

Yes, absolutely. Once your package is dispatched from our global fulfillment center, an automated shipping confirmation email containing your tracking number and a tracking link will be sent to you immediately. You will be able to monitor your package's journey in real-time from South Korea straight to your doorstep.