COSRX Advanced The Vitamin C 23 Serum

COSRX Advanced The Vitamin C 23 Serum is a high-strength brightening serum formulated with 23% pure vitamin C, Super Vitamin E, and glutathione. It helps improve the appearance of dullness, uneven skin tone, dark spots, and early signs of skin aging.
The formula also contains panthenol, allantoin, and hyaluronic acid to help support skin hydration and comfort.

Key Benefits:

Helps brighten dull looking skin.
Improves the appearance of uneven skin tone.
Helps reduce the appearance of dark spots.
Supports smoother, firmer-looking skin.
Provides antioxidant care.
Helps maintain skin hydration.

Best For:

Dullness, uneven skin tone, dark spots, and early signs of aging.

How to Use:

Apply 2–3 drops to clean skin after cleansing and toning. Follow with moisturizer and sunscreen during the day. Because this contains a high concentration of pure vitamin C, patch test first and introduce it gradually. Avoid using it in the same routine as AHA, BHA, or retinol if irritation occurs. Store according to the manufacturer's instructions.