Brighten, firm, glow. COSRX The Vitamin C 23 Serum delivers a potent 23% pure L‑ascorbic acid blend with super vitamin E (tocotrienol) and hyaluronic acid to visibly reduce pigmentation, boost brightness, and smooth fine lines. Its dual-layer formula—oil and serum—locks in hydration while delivering clean antioxidant power. Ideal for those experienced with Vitamin C, it supports even tone, elasticity, and radiance with consistent use.
