ProtoClinical k-beauty COSRX The Niacinamide 15 Serum 20ml single centered serum bottle on a white background with dark gray packaging
COSRX

COSRX The Niacinamide 15 Serum 20ml

$15.72
["[\"Delivers concentrated actives deep into the skin\",\"Targets specific concerns with a lightweight, fast-absorbing formula\",\"Helps improve skin texture and tone with consistent use\"]"]
Total acne care with 15% niacinamideHighly concentrated serum that combines the maximum concentration of niacinamide with optimal ratios of synergistic ingredients for total acne control. 
For all skin types dealing with acne and breakouts: COSRX's serum with Niacinamide works from within to deliver delivers concentrated actives deep into the skin, not just temporary comfort.
100% authentic

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["[\"Korean Beauty Formulation\",\"Suitable for Daily Use\"]"]
["[\"tone-up pigments\"]"]
COSRX The Niacinamide 15 Serum 20ml
COSRX The Niacinamide 15 Serum 20ml Default Title
$15.72
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
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["[\"tone-up pigments\"]"]

Niacinamide works at the junction between melanocytes and keratinocytes, intercepting melanin transfer before pigment reaches the visible surface. It simultaneously boosts ceramide synthesis to strengthen the lipid barrier, which is why consistent use addresses both discoloration and dehydration. In this serum, Niacinamide targets acne and breakouts, delivering delivers concentrated actives deep into the skin with consistent use.

["[\"Niacinamide 15%
intercepts melanin transfer to fade spots and refine pore texture from within\"]"]
Texture

Lightweight, absorbing serum

["[\"All Skin Types\"]"] ["[\"acne\",\"breakouts\",\"excess oil\",\"clogged pores\"]"]
Hover the swatch: it ripples like water

How to use

Wear alone or under makeup.
Full transparency

Ingredients

Tone-up pigments in a light cream-lotion base that brightens and smooths the look of skin.

COSRX The Niacinamide 15 Serum 20ml is built around a high-concentration niacinamide serum created for acne-prone and oily skin. Its ingredient story centers on 15% niacinamide and synergistic oil-balancing support ingredients. In cosmetic formulas, these materials are used because they can help regulate excess sebum, reduce the look of active breakouts, and keep pores appearing cleaner and more balanced. That matters for this product format because a serum texture is useful because oil-control care usually works best in a thin layer that can be directed where shine is most noticeable. Rather than promising instant transformation, the formula is designed to improve skin gradually through hydration support, barrier comfort, and steady visible refinement. With consistent use, that kind of approach can help skin look calmer, brighter, smoother, firmer, or more balanced depending on the product goal, while keeping the routine wearable. Texture also shapes performance: essences and serums layer easily, while creams create a more protective finish and targeted spot formulas stay focused where they are needed. In short, the science behind this product is ingredient synergy matched with a texture that helps those ingredients work in a practical daily routine.

The detail

Specs & details

FormatLightweight serum
SizeDefault Title
Skin typesAll Skin Types
Country of originSouth Korea
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Questions & answers

After cleansing and toning, before moisturizer. Serums deliver actives most effectively on freshly prepped skin.\",\"Q: Can I layer this with other serums?
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About the brand

OriginSeoul, KR
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