COSRX Advanced The Vitamin C 23 Serum (20ml)

High-strength radiance. Visible clarity.

A concentrated brightening serum formulated with 23% pure Vitamin C (L-Ascorbic Acid) to target dark spots, post-acne marks and uneven skin tone, revealing a clearer, more luminous complexion.

1. Specification

Product Name: COSRX Advanced The Vitamin C 23 Serum
Volume: 20ml
Skin Type: Suitable for most skin types – particularly dull, uneven or pigmentation-prone skin
Texture: Lightweight, slightly viscous serum
Fragrance-Free: Yes
Made in: South Korea

2. Key Features

• 23% Pure Vitamin C – Helps fade dark spots and brighten overall tone
• Improves Skin Clarity – Reduces the appearance of hyperpigmentation
• Hydrating Support – Formulated with Hyaluronic Acid and Allantoin
• Antioxidant Protection – Helps defend against environmental stress
• Minimalist Formula – Free from unnecessary additives

3. Product Description

• The COSRX Vitamin C 23 Serum delivers high-performance brightening care with 23% pure L-Ascorbic Acid. 
• Designed to visibly improve dullness, pigmentation and post-blemish marks, this powerful formula works to restore clarity and evenness while maintaining hydration and comfort.
• Despite its high concentration, the formula includes soothing and hydrating ingredients to help reduce potential irritation, making it suitable for those looking for noticeable results without compromising skin balance.
• With consistent use, skin appears brighter, smoother and more refined.

4. How to Use

Evening routine recommended (can be used in the morning with SPF):

1. After cleansing and toning, apply 2–3 drops to the face.
2. Gently pat until fully absorbed.
3. Follow with moisturiser. 

 ☀ If used in the morning, always apply a broad-spectrum SPF.
💡 Store in a cool, dark place or refrigerator to maintain potency.

5. Key Ingredients

Key Benefits

✔ Fades dark spots and acne marks
✔ Brightens dull complexion
✔ Improves skin texture
✔ Provides antioxidant protection
✔ High-strength yet balanced formulation