COSRX The Niacinamide 15 Serum (20 ml)

COSRX The Niacinamide 15 Serum (20 ml)

Product Overview

COSRX The Niacinamide 15 Serum is a high-strength, dermatologically tested treatment engineered for total acne, pore, and texture control. By combining a maximum clinical concentration of $15\%$ pure Niacinamide with a highly precise ratio of synergistic ingredients, this serum targets every stage of acne—from early sebum congestion to post-breakout scarring.

Key Benefits

• Total Sebum & Oil Control: Clinically proven to reduce excess oil synthesis and soothe overactivated sebaceous glands, drastically minimizing T-zone shine.

• Advanced Pore & Texture Refinement: Flushes out clogged pores, smoothing rough, bumpy skin and visibly reducing the size of enlarged pores.

• Fades Acne Scars & Dark Spots: Aggressively targets post-inflammatory hyperpigmentation (PIH), dark blemishes, and uneven yellowish or dull skin tones.

• Calms Active Breakouts: Mitigates the inflammation, redness, and swelling associated with papules, pustules, and cystic acne, accelerating skin recovery.

Key Ingredients & How They Work

• Niacinamide (Vitamin B3) ($15\%$): A multi-functional powerhouse that inhibits melanin transfer to brighten dark spots, reduces oil production, soothes acne inflammation, and strengthens the skin’s ceramide barrier.

• N-Acetylglucosamine (NAG) ($2\%$): An amino sugar that works in perfect synergy with Niacinamide. Together, they form a potent brightening duo that fades stubborn hyperpigmentation significantly faster than Niacinamide alone. It also provides micro-exfoliation to keep the skin surface smooth.

• Zinc PCA ($1\%$): Controls and balances oil-water levels, provides critical antibacterial benefits against acne-causing bacteria, and prevents future breakouts.

• Allantoin ($0.1\%$) & Tocopherol (Vitamin E): A soothing combination that promotes collagen synthesis, accelerates tissue regeneration, and calms down any potential irritation from the high concentration of actives.

Texture & Finish

• Consistency: A water-like, ultra-lightweight fluid.

• Finish: Spreads smoothly, absorbs almost instantly into the skin, and dries down to a clean, comfortable, mattified finish with absolutely zero sticky or tacky residue.

• Scent: Fragrance-free, making it entirely safe for sensitive and reactive skin types.