The Vitamin C 23 Serum
$62.00
COSRX The Vitamin C 23 Serum is a concentrated 20ml treatment formulated with 23% pure ascorbic acid, vitamin E, hyaluronic acid and allantoin.
It helps brighten dull-looking skin while improving the appearance of uneven tone, pigmentation, post-blemish marks and fine lines.
Vitamin C 23 Serum – COSRX The Vitamin C 23 Serum 20ml
The Vitamin C 23 Serum is a concentrated Korean treatment formulated with 23% pure ascorbic acid to brighten dull-looking skin and improve the appearance of uneven tone. Vitamin E, hyaluronic acid and allantoin complement the formula with antioxidant, hydrating and soothing support.
Vitamin C 23 Serum for Brighter-Looking Skin
This high-strength serum is suited to experienced vitamin C users seeking targeted care for visible pigmentation, post-blemish marks, dullness and early signs of ageing. Its watery texture absorbs quickly and layers comfortably beneath moisturiser and sunscreen.
Vitamin C 23 Serum Benefits
- Contains 23% pure vitamin C as ascorbic acid
- Helps brighten dull and tired-looking skin
- Supports a more even-looking complexion
- Helps improve the appearance of pigmentation
- Refines the look of post-blemish marks
- Supports smoother-looking skin texture
- Helps soften the appearance of fine lines
- Contains vitamin E for antioxidant support
- Includes hyaluronic acid for added hydration
- Features allantoin to help maintain skin comfort
- Lightweight, watery texture absorbs easily
- Authentic COSRX skincare made in Korea
Concentrated Antioxidant Care for Dullness
Pure vitamin C helps defend the complexion against the visible effects of environmental stress while promoting a brighter and revitalised appearance. Vitamin E works alongside ascorbic acid, while hyaluronic acid helps prevent the skin from feeling unnecessarily dry.
23% Pure Vitamin C Serum Formula
The concentrated brightening serum is designed for targeted results and should be introduced gradually. Allantoin helps soothe and comfort the complexion, balancing the active formula for a more manageable application experience.
How to Apply This Brightening Face Serum
- Shake the bottle gently before application.
- Cleanse and tone the skin, then allow it to dry.
- Apply two or three drops across the face.
- Focus on areas with dullness or uneven-looking tone.
- Pat gently until the serum has been absorbed.
- Follow with a hydrating moisturiser.
- Apply broad-spectrum sunscreen during the day.
- Begin two or three times per week before increasing use gradually.
Introduce the High-Strength Formula Carefully
The Vitamin C 23 Serum may produce a mild tingling sensation during early use. Avoid combining it in the same routine with strong exfoliating acids, retinoids or other highly concentrated vitamin C treatments, particularly when the skin is sensitive.
Storage and Daytime Protection
Keep the bottle tightly closed and refrigerated after opening to help maintain freshness. Complete a morning routine with the COSRX Aloe Soothing Sun Cream SPF50+ PA+++, or explore the complete COSRX skincare collection.
For external use only. Patch testing is recommended before first use. Discontinue use if persistent irritation occurs and avoid applying the serum to broken or severely irritated skin.
