Marionette lines, also known as puppet lines or oral commissure lines, are the vertical lines or folds that extend downward from the corners of the mouth to the chin. These lines can become more pronounced with age due to factors such as loss of skin elasticity, gravity, and repetitive facial movements. Marionette lines can give the appearance of a downturned or sad expression and may contribute to an overall aged or tired appearance of the face. While they are a natural part of the aging process, some individuals may seek treatment to reduce their prominence and restore a more youthful and refreshed appearance. Injectable fillers, such as hyaluronic acid-based fillers, can be used to add volume and fill in the deep lines and folds around the mouth, softening the appearance of marionette lines.