High-Potency Brightening Serum with Pure Vitamin C

Formulated with 23% pure ascorbic acid (vitamin C), this powerful serum targets uneven skin tone, dullness, fine lines, and dark spots. COSRX Vitamin C 23 Serum combines high-concentration vitamin C with moisturizing ingredients to help reveal a smoother, brighter, and more radiant complexion.

To help maintain ingredient stability, the formula features a dual-layered texture with a lightweight oil layer on top, delivering moisture and minimizing oxidation over time.

Recommended For:

• Experienced vitamin C users
• Targeted care for hyperpigmentation, uneven tone, and early signs of aging
• Those looking for intensive brightening and revitalizing effects

Key Benefits:

• Helps brighten dull skin and visibly fade dark spots
• Improves skin texture and elasticity
• Supports a smoother, more even-toned complexion
• Lightweight, moisturizing finish with quick absorption
• Can be used day or night (SPF recommended during daytime use)

Texture:
Dual-phase formula (oil + serum) that blends into a silky texture and absorbs smoothly into skin without greasiness.

Color:
Light yellow tint due to the high content of pure vitamin C.

How to Use:
After cleansing, during the serum step, gently shake the bottle and apply a few drops to the face. Pat gently until absorbed. Use once or twice daily. For morning use, follow with sunscreen (SPF 30+).

Storage Tips:

• Store in the refrigerator (3–10°C) after opening
• Use within 2 months of opening
• Insert dropper after first use for freshness

Key Ingredients:

• 23% Pure Vitamin C (Ascorbic Acid): Brightens skin, helps reduce dark spots, and supports elasticity
• Super Vitamin E (Tocotrienol): Antioxidant-rich, supports collagen and skin defense
• Hyaluronic Acid: Deep hydration and moisture retention
• Allantoin: Soothes and comforts irritated skin