Contouring is a makeup technique used to define and enhance the natural structure of the face. It involves applying darker shades of makeup to areas that naturally recede, such as the sides of the nose and under the cheekbones, while lighter shades are used on areas that protrude, like the forehead and the bridge of the nose. This creates the illusion of depth and dimension. The products used for contouring can include creams, powders, or sticks, often specifically designed for this purpose. Many people learn contouring techniques from beauty influencers or tutorials, making it a popular practice in the world of cosmetics and makeup artistry.