COSRX
The Niacinamide 15 Serum
SerumSerum
This may be a useful option if you specifically want a high-percentage niacinamide serum and you already tolerate niacinamide in milder formulas. Fifteen percent is a formulation choice, not a guarantee of clearer pores or a reason to skip moisturizer.
Editorial interpretation
These notes are judgments from recorded facts and routine context. They are not lab results or a guarantee of comfort.
Best for
- oily and combination skin
- readers focused on niacinamide as a treatment
Consider if
- you already use niacinamide at a lower level without irritation
- you want a short INCI without listed Parfum
May not suit
- beginners who have never used niacinamide
- reactive skin that prefers a hydrating serum without a high-percentage active
Key ingredients
Selected ingredients from the formula. Follow an ingredient link to learn about its role.
- acetyl glucosamine
- zinc PCA
Known product facts
Formulas can change. Check these details against the packaging you purchase.
Texture and formulation
- Texture
- Serum
- Fragrance
- No added Parfum listed
- Essential oils
- Not listed on the INCI used for this record
- Drying alcohol
- Not listed on the INCI used for this record
Serum texture. No Parfum listed on the short official INCI. No essential oils or drying alcohol listed.
How it fits into a routine
Routine role: Treatment. This is not the first product we would add to a brand-new routine. Settle cleanser, moisturizer, and sunscreen first.
High-percentage niacinamide is optional. If skin stings or flushes, stop and simplify — more percent is not automatically more useful.
- The 15% niacinamide statement from COSRX is the editorial reason this product exists in the catalog — it is a niacinamide page, not a general glow serum.
- Zinc PCA and acetyl glucosamine are listed companions; we do not turn them into extra outcome claims.
- It still sits after cleansing and before moisturizer in a short routine. It does not replace sunscreen.
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Educational content only — not medical advice, a diagnosis, or a guarantee of results. We have not personally tested this product for this page. Read our skincare disclaimer.