A philtrum piercing, nicknamed a medusa piercing, is an upper lip piercing placed in the philtrum, directly under the septum of the nose.^[1] It is typically pierced using a labret stud as jewelry, with the ball sitting outside the mouth in the dip of the top lip.

Philtrum piercing
Nicknames	Medusa
Location	Philtrum

A variation of the philtrum piercing is a jestrum, where the piercing is placed vertically through the lip using a curved barbell so both beads are visible. The other variation is called double because it features two pierced spots in a line.^[2]