A potent brightening serum formulated with 23% pure vitamin C (ascorbic acid) to help improve skin radiance, fade dark spots, and promote a more even skin tone. It also supports collagen production for firmer, healthier-looking skin.
Key Benefits
- Helps brighten dull and tired-looking skin
- Reduces the appearance of dark spots and pigmentation
- Improves uneven skin tone and texture
- Supports collagen production for firmer skin
- Provides antioxidant protection against environmental damage
- Lightweight serum with fast absorption
How to Use
- Apply 2–3 drops to clean, dry skin
- Gently pat until fully absorbed
- Follow with moisturizer
- Use once daily (preferably at night or morning if tolerated)
- Always apply sunscreen during daytime use
Product Details
- Brand: COSRX
- Variant: The Vitamin C 23 Serum
- Type: Facial serum
- Usage: Brightening, anti-aging, and dark spot care
- Suitable For: Normal, dull, and uneven skin (not ideal for very sensitive skin)
Safety Instructions
- For external use only
- Avoid direct contact with eyes
- May cause mild tingling in early use (normal for high vitamin C)
- Store properly to prevent oxidation (color may darken over time)
- Discontinue use if strong irritation occurs
- Use sunscreen daily when using this product
Storage Instructions
- Store in a cool, dry place
- Keep tightly closed after use
- Preferably refrigerate after opening for stability
- Keep away from sunlight and heat
- Avoid leaving bottle open for long periods
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