The nasolabial fold is the deep crease running from either side of the nose down towards the corners of the mouth. Also known as a “smile line,” this crease is created by repeated movement of the mouth. While it is attractive to have a little fold here, a deep fold can make you look older than you truly are.
The nasolabial folds can be treated with injections of dermal filler, which fill in the skin from the inside. Several types of injectable filler products are commonly used for this area. Each filler differs in the exact manner in which it builds up volume under the skin, as well as the length of time it remains in the face.