The “nasolabial fold” refers to the wrinkle that forms from the base of the nose and descends obliquely towards the sides of the mouth. When these lines extend downward to the chin, they are called “marionette lines.” These expression lines become more noticeable with age as the skin tissues relax and muscle tone is lost.

The primary treatment for these wrinkles is hyaluronic acid. This treatment lifts the fold, restoring the skin’s continuity.