Perk up those tired eyes with the Caffeine Kick Under Eye Serum by Catrice! Infused with 2% caffeine, niacinamide, squalane, and hyaluronic acid, this serum is like a morning coffee for your skin. Apply using the three cooling metal applicators and gently tap in with your ring finger. For an extra refreshing boost, pop it in the fridge so the formula is chilled when you apply it!