COSRX Advanced The Vitamin C 23 Serum (20ml)
Details
COSRX Advanced the Vitamin C 23 Serum is a high-strength Korean vitamin C serum formulated with 23% pure L-ascorbic acid to visibly brighten dull skin, target the look of dark spots, and refine uneven texture. Enhanced with Super Vitamin E and Glutathione, it supports a more radiant, smoother-looking complexion with a lightweight, fast-absorbing finish.
- High-potency 23% Vitamin C for brightening and glow
- Antioxidant support with Vitamin E + Glutathione
- Helps improve the look of dark spots and uneven tone
- Supports smoother-looking texture and early signs of aging
- Size: 20ml (some markets label it as 20g)
Key Benefits
- Brightens the look of dullness and uneven tone
- Targets the appearance of dark spots and post-acne marks
- Helps refine the look of texture for smoother-looking skin
- Antioxidant support to help defend against environmental stressors
How to Use
- Use on clean, dry skin after toner (preferably PM).
- Apply 2–3 drops to face (avoid eye area). Follow with moisturizer.
- If you’re new to strong vitamin C: start 2–3 nights/week, then increase as tolerated.
- Always use sunscreen in the morning.
- Storage tip: keep tightly closed, away from heat/light (cool storage recommended).
Key Ingredients
- Ascorbic Acid (23%) – pure vitamin C for brightening
- Tocotrienols / Tocopherol (Vitamin E) – antioxidant support
- Glutathione – helps support a more even-looking tone
- Sodium Hyaluronate – hydration and plumping feel
- Panthenol – soothing support
- Squalane – lightweight skin-conditioning
FAQ & Trust
- Who is it best for? Ideal for experienced vitamin C users seeking visible brightening and a firmer-looking glow.
- Can sensitive skin use it? If sensitive, introduce slowly and patch test first due to the high strength of pure vitamin C.
- Layering? Avoid combining in the same routine with strong exfoliating acids if irritation occurs.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.