COSRX The Vitamin C 23 Serum is a high-strength serum that contains 23% ascorbic acid, which is the purest and most effective form of vitamin C. It brightens the skin while reducing hyperpigmentation and signs of aging. It also contains hyaluronic acid, which keeps the skin hydrated; super vitamin E (tocotrienol), which reduces the appearance of fine lines and wrinkles; and allantoin, which protects the skin and relieves irritation._x000D_

• 23% pure vitamin C fades dark spots, post-breakout scars and hyperpigmentation_x000D_
• Brightens and evens out skin tone_x000D_
• Reduces appearance of fine lines and wrinkles_x000D_
• Increases skin elasticity, improves skin texture, and minimizes the appearance of pores_x000D_
• Provides moisture, plumps skin, and relieves irritation_x000D_
• Suitable for experienced vitamin C users_x000D_
• COSRX products are cruelty-free_x000D_

• 16.26% improvement of pigmentation (visible melasma and blemishes)_x000D_
• 32.89% improvement of triple-complexion skin tone (red skin tone)_x000D_
• 32.36% effect of brightening (skin radiance)_x000D_
• 16.36% improvement of elasticity (internal elasticity)_x000D_
• 38.65% improvement of the pore (volume)_x000D_
• 27.18% improvement of the pore (count)_x000D_
• 4.18% improvement of skin age_x000D_