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COSRX

The Vitamin C 13 Serum

Serum

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1 of 25 ingredients flagged

Strong active
Ascorbic Acid

Key ingredientsVitamin C (L-Ascorbic Acid), Panthenol (B5), Caffeine, Hyaluronic Acid, Squalane, Niacinamide

Ingredients

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

  1. 1Water

    The base of most formulas. Dissolves everything else.

  2. 2Ascorbic AcidStrong active

    The most researched vitamin C. Brightens, fades dark spots and boosts collagen. Can tingle.

  3. 3Butylene Glycol

    Lightweight hydrator and solvent that helps ingredients absorb.

  4. 4Dipropylene Glycol

    Lightweight hydrator and solvent that helps ingredients absorb.

  5. 5Tromethamine

    Keeps the formula at a skin-friendly pH.

  6. 63-0-Ethyl Ascorbic Acid
  7. 7Panthenol

    Pro-vitamin B5. Hydrates, soothes and helps skin repair.

  8. 8Acetyl Glucosamine
  9. 9Caffeine

    Constricts blood vessels to reduce puffiness and dark circles.

  10. 10Sodium Hyaluronate

    Holds many times its weight in water for plump, bouncy hydration.

  11. 11Sodium Sulfite
  12. 12Disodium EDTA

    Grabs metal ions so the formula stays stable.

  13. 13Glutathione
  14. 14Adenosine

    Smooths the look of wrinkles and calms skin.

  15. 15Gardenia Florida Fruit Extract

    A botanical extract. Usually present in small amounts for antioxidant or soothing benefits.

  16. 16Allantoin

    Soothes, softens and supports healing.

  17. 17Dextrin
  18. 18Squalane

    Lightweight, skin-identical oil that softens without feeling greasy.

  19. 19Tocotrienols
  20. 20Tocopherol

    Antioxidant that protects skin and the formula.

  21. 21Elaeis Guineensis (Palm) Oil
  22. 22Arginine

    Building blocks of your natural moisturizing factor.

  23. 23Niacinamide

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

  24. 24Pentylene Glycol

    Lightweight hydrator and solvent that helps ingredients absorb.

  25. 25Glycyrrhiza Glabra (Licorice) Root Extract

    Calms redness and gently brightens uneven tone.