Contouring and highlighting are makeup techniques used to enhance facial features. Contouring involves using a matte product slightly darker than your skin tone to create shadows, giving the illusion of more defined cheekbones, a slimmer nose, and a sculpted jawline. Highlighting uses a shimmery product to accentuate high points like the tops of cheekbones, bridge of the nose, and cupid's bow, adding a radiant glow and dimension to the face.