The COSRX AC Collection Blemish Spot Clearing Serum is an after-care serum that brightens, soothes and moisturises your skin after your acne has subsided. Formulated with 4% niacinamide to help reduce the appearance of scar and hyperpigmentation caused by breakouts, while propolis extract and natural hydrating agent NMF soothe the inflamed areas while strengthening your barrier after it has been weakened by acne. How to use: Take a proper amount of serum and gently massage on your face for absorption. Size: 40ml