COSRX The Vitamin C 23 Serum 20ml - High-potency 23% Vitamin C serum for advanced brightening and stubborn dark spot care.

Detailed Description
COSRX The Vitamin C 23 Serum 20ml is a high-strength brightening serum formulated with 23% pure Vitamin C to target stubborn dark spots, pigmentation, and uneven skin tone. This powerful formula helps boost skin radiance, improve texture, and support collagen production for firmer, smoother-looking skin. Best suited for experienced Vitamin C users who want faster and more visible brightening results.

Key Benefits
• Targets stubborn dark spots and pigmentation
• Brightens dull and uneven skin tone
• Boosts skin radiance and clarity
• Helps improve skin texture
• Supports collagen production
• High-strength Vitamin C formula

How to Use
Apply after cleansing and toning
Use 1–2 drops on completely dry skin
Gently spread over face and neck
Follow with moisturizer
Use preferably at night
Always apply sunscreen during daytime

Ingredients
Key ingredients include:
• Ascorbic Acid (Vitamin C 23%)
• Tocotrienol (Vitamin E)
• Sodium Hyaluronate
• Allantoin

Precautions
• Not recommended for beginners
• Patch test mandatory
• Mild tingling or warmth may occur
• Avoid combining with strong acids or retinol
• Store in a cool, dark place
• Sunscreen is essential

Suitable Skin Types
• Normal skin
• Combination skin
• Oily skin
• Pigmentation-prone skin
• Not ideal for very sensitive skin