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COSRX

The Niacinamide 15 Serum

Serum

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None of the 15 ingredients are flagged.

Key ingredientsNiacinamide, Zinc PCA

Ingredients

In label order. Tap one to learn what it does.

  1. 1Water

    The base of most formulas. Dissolves everything else.

  2. 2Pentylene Glycol

    Lightweight hydrator and solvent that helps ingredients absorb.

  3. 3Niacinamide

    Vitamin B3. Balances oil, refines pores, fades marks and strengthens the barrier. A true all-rounder.

  4. 4Butylene Glycol

    Lightweight hydrator and solvent that helps ingredients absorb.

  5. 5Acetyl Glucosamine
  6. 61,2-Hexanediol

    Lightweight hydrator and solvent that helps ingredients absorb.

  7. 7Zinc Pca

    Helps regulate oil and keeps breakouts in check.

  8. 8Trehalose

    Sugar that helps skin hold water under stress.

  9. 9Xanthan Gum

    Gives the product its texture.

  10. 10Pullulan
  11. 11Allantoin

    Soothes, softens and supports healing.

  12. 12Ethylhexylglycerin

    Lightweight hydrator and solvent that helps ingredients absorb.

  13. 13Sodium Phytate

    Grabs metal ions so the formula stays stable.

  14. 14Citric Acid

    Keeps the formula at a skin-friendly pH.

  15. 15Tocopherol

    Antioxidant that protects skin and the formula.