Transform your skincare routine with the COSRX The Niacinamide 15 Serum 20ml, a powerful Korean facial serum formulated with 15% Niacinamide to visibly reduce blemishes, control excess oil, refine pores, and brighten uneven skin tone. Designed for oily, combination, and acne-prone skin, this concentrated serum helps improve skin clarity while promoting a smoother, healthier-looking complexion.

The COSRX The Niacinamide 15 Serum combines 15% Niacinamide, Zinc PCA, N-Acetylglucosamine (NAG), and Allantoin to target multiple skin concerns at once. It helps reduce post-acne marks, minimize the appearance of enlarged pores, regulate sebum production, and strengthen the skin's moisture barrier without causing heaviness or greasiness.

Its lightweight, fast-absorbing texture glides effortlessly onto the skin, making it easy to layer with the rest of your skincare routine. With regular use, skin appears brighter, smoother, more balanced, and visibly clearer while maintaining healthy hydration.

Whether you're dealing with acne breakouts, oily skin, dark spots, or uneven texture, the COSRX The Niacinamide 15 Serum 20ml is an effective daily treatment for achieving a radiant, refined complexion.

Key Benefits

✔ Contains 15% Niacinamide for advanced brightening

✔ Helps reduce acne and blemishes

✔ Controls excess oil and sebum

✔ Minimizes the appearance of enlarged pores

✔ Fades post-acne marks and dark spots

✔ Improves uneven skin tone

✔ Strengthens the skin barrier

✔ Lightweight, fast-absorbing formula

✔ Non-greasy and fragrance-free

✔ Suitable for daily use

✔ Suitable for oily, combination, and acne-prone skin

Why You'll Love It

⭐ High-strength 15% Niacinamide formula

⭐ Helps achieve clearer, brighter skin

⭐ Reduces shine without drying the skin

⭐ Improves skin texture and smoothness

⭐ Helps fade acne scars over time

⭐ Layers well with other skincare products

⭐ Korean skincare bestseller

⭐ Gentle enough for consistent daily use

Key Ingredients

15% Niacinamide

Helps brighten dull skin, reduce blemishes, improve uneven skin tone, regulate oil production, and minimize the appearance of pores.

Zinc PCA

Helps balance excess sebum while supporting clearer, healthier-looking skin.

N-Acetylglucosamine (NAG)

Works alongside niacinamide to improve skin texture and visibly reduce dark spots.

Allantoin

Soothes and calms the skin while supporting the skin's natural moisture barrier.

How to Use

1. Cleanse and tone your skin.
2. Apply 2–3 drops evenly over the face.
3. Gently pat until fully absorbed.
4. Follow with your favorite moisturizer.
5. Apply sunscreen during the day when using brightening products.

Perfect For

✔ Acne-Prone Skin

✔ Oily Skin

✔ Combination Skin

✔ Enlarged Pores

✔ Dark Spots

✔ Post-Acne Marks

✔ Uneven Skin Tone

✔ Daily Brightening Routine

Product Details

Brand: COSRX

Product Name: The Niacinamide 15 Serum

Size: 20ml / 0.67 fl. oz.

Category: Brightening Facial Serum

Key Ingredients: 15% Niacinamide, Zinc PCA, N-Acetylglucosamine (NAG) & Allantoin

Texture: Lightweight Serum

Finish: Bright, Smooth & Balanced Skin

Skin Type: Oily, Combination & Acne-Prone Skin