Product Overview
COSRX The Vitamin C 13 Serum is a lightweight brightening serum formulated with 13% pure Vitamin C, Super Vitamin E, and Hyaluronic Acid. It is designed to improve skin radiance, even out skin tone, and reduce the appearance of dark spots, dullness, and fine lines while keeping the skin hydrated and smooth.

Key Benefits

Brightens dull and tired-looking skin
Helps fade dark spots, pigmentation, and blemishes
Improves uneven skin tone and overall radiance
Reduces appearance of fine lines and early signs of aging
Deeply hydrates and plumps the skin
Improves skin texture for a smoother finish

How It Works
The 13% pure Vitamin C works as a powerful antioxidant that helps reduce pigmentation and boost skin brightness. Super Vitamin E enhances antioxidant protection and supports skin repair, while Hyaluronic Acid deeply hydrates and locks in moisture. Together, they improve skin clarity, elasticity, and overall glow.

How to Use

Cleanse and tone your face
Apply 2–3 drops of serum onto the skin
Gently pat and massage until fully absorbed
Follow with moisturizer
Use sunscreen during daytime application
Use daily, morning and/or night for best results

Suitable For
All skin types, especially dull, uneven, dehydrated, and early aging-prone skin. Suitable for daily use, including sensitive skin with proper patch testing.

Caution

For external use only
Avoid direct contact with eyes
Perform a patch test before first use
Store in a cool, dark place to maintain stability
Discontinue use if irritation occurs