COSRX The Niacinamide 15 Serum 20mL / 0.67 fl.oz.

코스알엑스 더 나이아신아마이드 15 세럼 20ml / 0.67 fl.oz.

Advanced Multi-Correctional Formula for Clearer, Smoother Skin

Discover the powerful skincare solution that goes beyond brightening. COSRX The Niacinamide 15 Serum is a high-performance treatment designed for oily, combination, and acne-prone skin. Powered by a potent 15% niacinamide concentration, this serum works in synergy with Acetyl Glucosamine and Zinc PCA to target multiple skin concerns — all in one bottle.

Who It's For: Perfect for those struggling with

• Oily or combination skin
• Frequent breakouts or acne scars
• Dullness and uneven skin tone
• Large, visible pores
• Damaged or sensitive skin barrier

Key Features

• Brightens & Evens Skin Tone

Niacinamide, also known as Vitamin B3, helps reduce hyperpigmentation and visibly brightens dull, uneven skin. It inhibits melanin transfer to minimize the appearance of dark spots and discoloration.

• Minimizes Pores & Controls Oil

Excess oil and enlarged pores? This formula helps regulate sebum production and visibly refine skin texture for a smoother, more balanced complexion.

• Fights All Stages of Acne

From early-stage breakouts to stubborn blemishes, this serum addresses both inflammatory and non-inflammatory acne by inhibiting acne-causing bacteria and calming the skin.

• Reduces Post-Acne Marks

Say goodbye to lingering acne scars. Niacinamide helps restore the skin’s barrier and fade red or brown discoloration left behind by past breakouts.

• Strengthens Skin Barrier

Environmental stress, UV exposure, and hormonal shifts can damage your skin barrier. This serum helps rebuild and retain moisture while defending against external irritants.

Key Ingredients:

• 15% Niacinamide (Vitamin B3): A multitasking powerhouse for brightening, acne care, and barrier repair.
• Zinc PCA: Helps reduce inflammation and control excess sebum.
• Acetyl Glucosamine: Gently improves skin texture and supports exfoliation for enhanced absorption and radiance.

Gentle Yet Effective:

• Dermatologist tested
• Non-comedogenic (won’t clog pores)
• Suitable for daily AM & PM use
• Safe for sensitive and acne-prone skin

How to Use:

• After cleansing and toning, apply 2–3 drops to the face and gently pat until fully absorbed. Follow with your favorite moisturizer.
• Tip: For best results, pair with a gentle exfoliator to remove dead skin cells and boost absorption. Always do a patch test before combining with other potent actives.

Niacinamide is clinically proven to be effective up to 20% concentration and is well tolerated by most skin types. If you're new to high-strength formulas, start slow and observe how your skin responds.

Backed by research. Loved by real people. COSRX The Niacinamide 15 Serum is your all-in-one solution for visibly clearer, smoother, and more radiant skin.