COSRX The Vitamin C 23 Serum

COSRX The Vitamin C 23 Serum is a high-potency brightening treatment formulated with 23% pure vitamin C (ascorbic acid) to help improve uneven tone, fade dark spots, and promote a radiant, youthful-looking complexion. This concentrated serum supports skin renewal and antioxidant protection while targeting visible signs of pigmentation and dullness.

The formula combines vitamin C with synergistic ingredients such as vitamin E derivatives, hyaluronic acid, panthenol, and allantoin to enhance antioxidant performance, maintain hydration, and support skin comfort despite its strong active concentration.

Key Benefits

• Helps visibly brighten dull skin and improve radiance

• Supports fading of dark spots, acne marks, and uneven tone

• Promotes smoother texture and refined skin appearance

• Vitamin E derivative provides antioxidant synergy with vitamin C

• Hyaluronic acid and soothing ingredients help maintain hydration and comfort

Texture and Performance

The serum has a lightweight, slightly emollient texture that spreads easily and absorbs without heavy residue. Its concentrated formulation delivers intensive brightening and smoothing care while leaving the skin looking luminous and refreshed.

Ideal For

• Dark spots and hyperpigmentation concerns

• Dull or uneven skin tone

• Early signs of aging and texture irregularities

• Experienced vitamin C users seeking stronger brightening care

Size: 20ml