What It Is: The Matte Lipstick Refill is engineered as a unique fit within Byredo's iconic casing to be utilized and treasured indefinitely. Switch with ease among a range of subtle yet recognizable shades to match a range of emotions. How To Use It: - Pull to remove the refill from the base of your existing lipstick (sold separately). - Insert the new refill until you hear a satisfying click. - Remove the gold-tone cap on the refill before closing the lipstick casing.