• COSRX The Vitamin C 13 Serum | Brightening & Anti - Aging - T.E.R
  • COSRX The Vitamin C 13 Serum | Brightening & Anti - Aging - T.E.R
  • COSRX The Vitamin C 13 Serum | Brightening & Anti - Aging - T.E.R
  • COSRX The Vitamin C 13 Serum | Brightening & Anti - Aging - T.E.R
  • COSRX The Vitamin C 13 Serum | Brightening & Anti - Aging - T.E.R
  • COSRX The Vitamin C 13 Serum | Brightening & Anti - Aging - T.E.R
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COSRX The Vitamin C 13 Serum

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$18.99 USD
$20.99 USD $18.99 USD
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Is this right for you?Step 4 of 7 · Serum / essence
  1. Oil cleanse
  2. Cleanse
  3. Tone
  4. Serum
  5. Eye
  6. Moisturize
  7. SPF
Made for
All skin typesSensitiveAgingNormal
Targets
Dullness & glowFine lines & firmness
Key ingredients
Vitamin CHyaluronic acidNiacinamide
Texture
Serum
How to use
Morning and night, after toner and before moisturizer. Thinnest textures go first.

Seal it in with a moisturizer

SUPPURU Calming Cream | Soothing Moisturizer for Sensitive & Acne - Prone Skin (50g) - T.E.RSUPPURU Calming Cream $25.00 AESTURA ATOBARRIER365 Cream with Ceramides | Korean Moisturizer for Skin Barrier Repair - T.E.RAESTURA Atobarrier365 Cream with Ceramides – 80ml $28.99
Still unsure? Take the 60-second Skin Match quiz →

Your shortcut to radiant, even-toned skin— this potent brightening serum combines 13% pure vitamin C with niacinamide and glutathione to fade dark spots, smooth texture, and boost luminosity. Lightweight yet powerful for daily glow.

🍊 High-potency vitamin C for visible brightening
🌿 Niacinamide & glutathione to fade spots & even tone
💧 Hyaluronic acid for hydrated, plump skin
✨ Lightweight, non-sticky for all skin types
🛡️ Antioxidant shield against daily skin stressors

Ingredients

The COSRX The Vitamin C 13 Serum is formulated with a blend of ingredients designed to brighten, hydrate, and protect the skin. Here is the full ingredient list:

Ingredients: Water, Ascorbic Acid (13%), Butylene Glycol, Dipropylene Glycol, Tromethamine, 3-O-Ethyl Ascorbic Acid, Panthenol, Acetyl Glucosamine, Caffeine, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Squalane, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Arginine, Niacinamide, Pentylene Glycol, Glycyrrhiza Glabra (Licorice) Root 1 Extract.  

Please note that ingredient lists may change or vary over time. For the most accurate and up-to-date information, refer to the product packaging or the manufacturer's official website.

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  • Features & Benefits

    ✔️ High concentration vitamin C serum for brighter complexion
    ✔️ Reduces dark spots, hyperpigmentation & improves texture
    ✔️ Hydrates deeply while boosting radiance
    ✔️ Smooths surface for better makeup application
    ✔️ Lightweight, non-greasy, and non-irritating when used properly
    ✔️ Enhances SPF effectiveness by limiting UV damage

  • Product Details

    🌟 100% Authentic – Made in Korea
    📅 Best By: ~07/2026
    🔖 UPC: 8809598455238
    ✅ Return accepted within 30 days
    📦 Ships Fast from the USA

  • How To Use

    ① After cleansing and toning, apply 2–3 drops to face and neck
    ② Gently pat until absorbed
    ③ Use once daily (preferably in morning routine)
    ④ Always follow with sunscreen when used during day
    ⑤ Begin with 2–3 times per week if you have reactive skin, then build tolerance

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