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COSRX The Vitamin C 13 Serum 20ml / 0.67 fl oz

COSRX The Vitamin C 13 Serum 20ml / 0.67 fl oz

Regular price $12.99 USD
Regular price $13.59 USD Sale price $12.99 USD
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🍊 13% Pure Vitamin C Serum | 8-in-1 Skin Solution with Proven Results

Packed with 13% pure ascorbic acid, this multitasking serum delivers 8 skin benefits in a single drop — from brightening and hydration to firmness and wrinkle care. Clinically tested, gentle enough for daily use even on sensitive skin.


💡 8 Proven Benefits in One Serum
✔️ Firms & Lifts Skin
✔️ Delivers 120-Hour Antioxidant Protection
✔️ Boosts Moisture Levels Instantly
✔️ Visibly Minimizes Pores in 7 Days
✔️ Smooths Rough Texture After One Use
✔️ Brightens and Evens Skin Tone in 4 Weeks
✔️ Reduces Dark Spots, Freckles & Pigmentation in 4 Weeks
✔️ Softens Fine Lines Around the Eyes in 4 Weeks


💧 Why 13% Vitamin C?
This formula uses pure L-Ascorbic Acid, not a derivative — making it more potent and effective. 13% is the optimal concentration for powerful brightening and anti-aging benefits with minimal irritation.


🧪 Dermatologically Tested

  • ✅ Skin Irritation Test – Passed

  • ✅ Sensitive Skin Safety Test – Passed


🔬 Full Ingredient List (INCI – Horizontal Format):

Water, Ascorbic Acid (13%), Butylene Glycol, Dipropylene Glycol, Tromethamine, Ethyl Ascorbyl Ether, 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 Extract

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