Meet your skin’s radiance amplifier—the COSRX The Vitamin C 23 Serum (20 ml).
Formulated with a highly concentrated 23% pure Vitamin C (ascorbic acid), this powerful serum is designed to dramatically brighten dull skin, lighten dark spots, and improve overall texture. It helps diminish acne scars, sun spots, and fine lines while protecting the skin from environmental stress.

This high-strength formula is stabilized with Vitamin E and enhanced with sodium hyaluronate to deliver deep hydration without irritation. Its silky texture absorbs quickly and leaves skin glowing, firm, and smooth—perfect for experienced vitamin C users who want fast, visible results.

Key Features & Benefits:

• Targets visible dark spots, pigmentation, and uneven skin tone

• Promotes collagen production for firmer, youthful-looking skin

• High concentration of vitamin C provides intense brightening

• Hydrating and antioxidant-rich for a healthy skin barrier

• Ideal for experienced users or those with stubborn discoloration

Key Ingredients:

• Ascorbic Acid (Vitamin C 23%): Delivers potent brightening and anti-aging effects while protecting against free radicals

• Tocotrienol (Super Vitamin E): A powerful antioxidant that stabilizes vitamin C and boosts skin repair

• Sodium Hyaluronate: Deeply hydrates and plumps the skin, minimizing fine lines

• Allantoin: Soothes and calms irritated or sensitized skin

How to Use:
After cleansing and toning, apply 2–3 drops to the face, avoiding the eye area. Gently pat until fully absorbed. Follow with a moisturizer. Use during your evening routine and apply sunscreen during the day. Store in a cool, dark place to preserve potency.