COSRX The Vitamin C 13 Serum features 13% pure Vitamin C to help fade hyperpigmentation and blemishes. Enriched with niacinamide and licorice root extract, this serum targets dull skin and uneven tone, while hyaluronic acid, allantoin, and panthenol keep your skin hydrated and soothed. Benefits: Provides daily brightening care Fades blemishes, dark spots, and freckles Improves overall skin tone Refines skin texture Reduces the appearance of pores How to Use: After cleansing and applying toner, apply a few drops of the serum to your skin. Use your fingertips to gently massage and absorb the serum, starting from the center of your face and working towards the edges.