The Vitamin C23

High-Strength Brightening & Antioxidant Serum

The COSRX The Vitamin C 23 Serum is a concentrated antioxidant treatment formulated with 23% pure Vitamin C (Ascorbic Acid) to visibly brighten dull skin, improve uneven tone, and support a smoother, more radiant complexion.

Enhanced with Vitamin E (Tocotrienol) and Hyaluronic Acid, this powerful yet hydrating formula helps defend against environmental stressors while delivering deep moisture to reduce the appearance of fine lines and dehydration. When used consistently, skin appears clearer, firmer, and more luminous.

Designed for those looking for intensive brightening care, this serum works well alongside Vitamin E-based products to enhance antioxidant synergy and overall skin vitality.

✨ Why You’ll Love It

• 23% Pure Vitamin C (Ascorbic Acid) – Helps brighten skin and improve uneven tone.
• Vitamin E (Tocotrienol) – Supports antioxidant protection and helps reduce visible signs of ageing.
• Hyaluronic Acid – Delivers deep hydration and plumps the look of fine lines.
• High-Strength Formula – Targets dullness and pigmentation concerns.
• Skin-Friendly Standards – Hypoallergenic and dermatologist tested.

With its lightweight, fast-absorbing texture, this serum leaves skin looking visibly refreshed and radiant.

💚 Formulated for Performance & Care

• Dermatologist tested
• Hypoallergenic
• Free from parabens, sulfates, phthalates
• Animal testing-free

How to Use

Shake gently 1–2 times before use.
Apply 2–3 drops to clean, dry skin once or twice daily.
Gently pat for absorption.

For daytime use, follow with SPF 30+ sunscreen.
Can be applied under the eye area, avoiding direct eye contact.

Tip: Store in the refrigerator after opening to help reduce oxidation and maintain freshness.
A patch test is recommended before first use due to the high concentration of Vitamin C.

⚠️ Hazards & Cautions

• For external use only.
• Discontinue use if irritation occurs.
• Avoid direct contact with eyes.
• Keep out of reach of children.
• Store away from direct sunlight.

Size: 20ml
Country of Origin: Korea