Lip fillers are injectable treatments that add volume and definition to your lips. They’re made from hyaluronic acid (HA), a substance naturally found in your body that plumps and hydrates the skin.

People consider lip fillers for a few reasons. One is to enhance the size and fullness of their lips. Thin lips can be a result of genetics, aging, or simply personal preference. Fillers can create a plumper, more pouty look. Another reason is to improve the shape of the lips.

Fillers can be used to define the Cupid’s bow (the indent in the upper lip), add balance to uneven lips, or smooth out fine lines around the mouth. Overall, lip fillers are a way for people to achieve fuller, plumper, and more defined lips for a more youthful or balanced appearance.