COSRX The Vitamin C23 Serum 20ml

23% Pure L-Ascorbic Acid Brightening Booster

Give your skin a potent brightening and anti-aging boost with COSRX The Vitamin C23 Serum, a high-performance K-Beauty formula brimming with 23% pure L-ascorbic acid, super vitamin E (tocotrienol), and hyaluronic acid. Designed as a two-layer oil-and-water serum to maintain potency and delivers lasting hydration, it visibly reduces dark spots and pigmentation, smooths fine lines, and enhances skin elasticity.

Lightweight and fast-absorbing, it's best used morning or evening — just shake before use, follow with SPF in the day time, and keep refrigerated to preserve its active strength. 

✨ Why You’ll Love It:

   ✅ High-powered 23% pure vitamin C — Delivers rapid brightening and collagen stimulation 

   ✅ Super vitamin E + Hyaluronic acid — Duo enhances antioxidant support and lock-in moisture

   ✅ Innovative layered formula  — Keeps vitamin C stable while oil layer adds smooth, non-greasy finish

🚨 Important
• Keep Refrigerated (3-10°C) - store upright in refrigerator once opened to prevent oxidation.
• Recommend to use within 2 months of opening due to active ingredient protection.