Cosrx - The Vitamin C 23 Serum 20 mlCOSRX The Vitamin C 23 Serum 20ml Achieve brighter, smoother, and more youthful skin with COSRX The Vitamin C 23 Serum, a potent antioxidant packed formula containing 23% pure vitamin C (ascorbic acid). This powerful serum targets dark spots, uneven skin tone, fine lines, and dullness, revealing a radiant complexion with improved texture and elasticity. Key Benefits: Brightening & Even Skin Tone: High concentration of 23% pure vitamin C effectively