Cosrx The Niacinamide 15 Serum – 20ml

A high-performance brightening serum that targets uneven tone, excess oil and the look of enlarged pores. Powered by a concentrated 15% niacinamide blend, this lightweight formula helps improve skin clarity and overall radiance while being friendly to combination and oily skin types.

Key benefits

• Helps reduce the appearance of dark spots, hyperpigmentation and post-acne marks
• Controls excess sebum and refines the look of pores
• Improves skin texture and promotes a more even, luminous complexion
• Lightweight, fast-absorbing formula that layers easily under moisturizers and makeup

Key ingredients

• Niacinamide (15%): Brightening, sebum-regulating and barrier-supporting active
• Supporting humectants and soothing agents: help maintain hydration and minimize irritation

(Ingredient lists vary by batch — check the product packaging for the full INCI.)

Texture & scent

• Lightweight, non-greasy serum that absorbs quickly
• Designed for minimal scent (formulation encourages low-irritation use)

How to use

1. After cleansing and toning, apply 2–3 drops to dry skin (face and neck).
2. Gently pat until absorbed.
3. Follow with moisturizer and, in the daytime, broad-spectrum sunscreen.
4. Use once or twice daily as tolerated.

Who it’s for

• Oily, combination and acne-prone skin
• Skin concerned with dullness, uneven tone, dark spots or enlarged pores
• Anyone looking to add a targeted brightening and pore-refining serum to their routine

Tips

• Introduce gradually if you’re new to concentrated actives: start every other day and increase frequency as tolerated.
• If you use strong exfoliating acids (AHAs/BHAs) or potent vitamin C treatments, consider alternating them between morning/evening or different days to minimize irritation.
• Always follow with sunscreen during the day to protect treated skin.

Cautions

• Perform a patch test before first use.
• Avoid direct contact with eyes. If irritation, redness or swelling develops, discontinue use and consult a dermatologist.

Specifications

• Size: 20 ml
• Brand: Cosrx
• Formulation: Concentrated niacinamide serum, lightweight

Why you’ll love it: a potent, streamlined niacinamide serum designed to visibly brighten, control shine and refine skin texture without heavy residue — ideal for targeted, everyday use.