Marionette lines, also known as „Merkel folds,“ are wrinkles that extend from the corners of the mouth to the chin, often making the facial expression appear sad or tired. Unjustly so, as marionette lines are part of the natural aging process. Over time, a loss of elasticity and volume occurs, leading to sagging skin and wrinkles. External factors like sun exposure, smoking, or stress can also contribute to the formation of marionette lines.