Powder contour is a makeup technique used to define and enhance the structure of the face. It involves applying a matte powder product, typically a few shades darker than the skin tone, to specific areas such as the hollows of the cheeks, jawline, and sides of the nose. This creates shadows that can make the face appear more sculpted and dimensional. To apply powder contour, a brush is often used for blending the product seamlessly into the skin. It's important to choose a contour shade that complements the skin tone and to use a light hand to avoid harsh lines. Setting the contour with a setting powder can help it last longer throughout the day.