A philtrum piercing, nicknamed a medusa piercing, is an upper lip piercing placed in the philtrum, directly under the septum of the nose. It is typically pierced using a labret stud as jewelry, with the ball sitting outside the mouth in the dip of the top lip. A variation of the philtrum piercing is a jestrum, where the piercing is placed vertically through the lip using curved barbell so both beads are visible.