COSRX 15% Niacinamide Face Serum 0.67 fl oz — Pore-Minimizing, Oil-Control Zinc PCA

This lightweight serum combines a high 15% niacinamide concentration with Zinc PCA to target texture concerns, shine, and visible pore size without heavy residue. Packaged in a compact 0.67 fl oz bottle, the formula absorbs quickly and layers easily under moisturizers and sunscreens, making it simple to add to morning or evening routines.

How does this serum help reduce pore visibility and oiliness?

The serum uses niacinamide to refine skin texture and Zinc PCA to help control sebum production, which together reduce the stretched appearance of pores. Regular use can make pores look tighter and skin surface appear smoother.

• 15% niacinamide targets uneven tone and texture.
• Zinc PCA helps regulate oil levels to minimize shine.
• Fast-absorbing, non-greasy base suitable for layering.

Can I use this every day and where in my routine should it go?

Apply 2–3 drops once or twice daily after cleansing and any watery toners, before thicker serums and creams. During daytime use, follow with a broad-spectrum SPF 30 or higher to protect skin and preserve results.

• Use morning and/or night depending on tolerance.
• Apply 2–3 drops; avoid direct contact with eyes.
• Patch test first and wait 24 hours for irritation check.

Is this suitable for sensitive or breakout-prone skin?

The combination of niacinamide and Zinc PCA is often well tolerated and may help calm redness while discouraging potential breakouts, but higher niacinamide percentages can cause irritation in reactive skin. Always perform a patch test and discontinue if you experience persistent irritation.

• Patch test on the body before full-face use.
• Formulated to reduce redness and refine texture.
• Consult a clinician if you have a history of strong reactions.

What results can I realistically expect and when?

Many users notice improved skin texture, less visible pores, and reduced excess shine within a few weeks of consistent use; pigment changes and overall tone can improve over longer periods. Individual outcomes vary with skin type and regimen consistency.

• Texture and pore appearance often improve within weeks.
• Visible tone-evening may take several weeks to months.
• Maintain regular use and sun protection for best outcomes.

Who is this for: COSRX 15% Niacinamide Face Serum suits people seeking a targeted, high-strength niacinamide treatment to refine pores, control oil, and even skin tone. It’s ideal for combination, oily, and texture-prone skin types who can tolerate active ingredients; sensitive or reactive skin should perform a patch test first and introduce gradually.

Ingredients

Water, Pentylene Glycol, Niacinamide, Butylene Glycol, Acetyl Glucosamine, 1,2-Hexanediol, Zinc PCA, Trehalose, Xanthan Gum, Pullulan, Allantoin, Ethylhexylglycerin, Sodium Phytate, Citric Acid, Tocopherol