Lip liners are the secret weapon behind every flawless lip look. Designed to define, shape, and enhance the natural contours of the lips, they create a clean, polished finish while preventing lipstick or gloss from feathering. Available in a variety of shades and textures—from creamy matte pencils to long-wear gel formulas—lip liners not only help achieve precise application but can also be worn alone for a soft, natural look.