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COSRX

The Niacinamide 15 Serum

Name: The Niacinamide 15 Serum
Brand: COSRX
SKU: sig_11ed5390d7a58e51263342fc7a9b6cc1
Price: 42.50 USD
Availability: InStock

$42.50

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15% niacinamide serum

A COSRX serum positioned around 15% niacinamide and zinc PCA for oil control, pore appearance, and post-acne mark care.

Best for

oily skinpores and sebumpost-acne marks

Why it stands out

High niacinamide level

The 15% niacinamide positioning makes this more targeted than a moisturizer or toner that only includes niacinamide incidentally.

Oily-skin fit

Zinc PCA and non-comedogenic positioning support its role for oily, combination, or blemish-prone routines.

How it fits in a routine

serumampm

Place according to the product step and avoid unnecessary stacking if skin is reactive.

Watch-outs & compatibility

Introduce gradually if high-niacinamide products make skin feel flushed or tight.medium

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Questions (7)

What makes COSRX The Niacinamide 15 Serum effective for oily and acne-prone skin?

COSRX The Niacinamide 15 Serum contains a 15% concentration of niacinamide combined with Zinc PCA.…

Official FAQ

How does niacinamide help control sebum and minimize large pores?

Niacinamide helps support by balancing excess oil production and strengthening the skin barrier, which helps reduce the buildup of sebum inside pores.…

Official FAQ

When can I expect to see results from using The Niacinamide 15 Serum?

Clinical tests by the Dermacosmetic Skin Science Laboratory showed visible improvements in 4 weeks, including a 45% decrease in pore size, 48% reduction in oiliness, and improvement in skin tone and blackheads.

Official FAQ

Can COSRX The Niacinamide 15 Serum be used with other active ingredients?

It’s best not to use AHA & BHA, Vitamin C, or Retinol at the same time, as they can be too strong when combined. Instead, use them at different times of the day.…

Official FAQ

Does the Niacinamide 15 Serum Help with Blemish Scars?

Yes. The high-strength niacinamide and Acetyl Glucosamine combination targets dark spots and uneven tone caused by acne.…

Official FAQ

Is COSRX The Niacinamide 15 Serum suitable for sensitive skin?

The formula is clinically proven and proven non-comedogenic, meaning it will not clog pores or trigger breakouts.…

Official FAQ

How should I include The Niacinamide 15 Serum in my daily skincare routine?

After cleansing and toning, apply 2–3 drops of the serum evenly across the face. Follow with a moisturizer to lock in hydration.…

Official FAQ

COSRX

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