A contour brush is a makeup tool designed specifically for applying and blending contour products, which are used to define and enhance the structure of the face. These brushes typically have an angled or tapered shape, allowing for precise application along the cheekbones, jawline, and forehead. Contour brushes can be made from various materials, including synthetic fibers and natural hair, each offering different textures and finishes. They are often used in conjunction with products like cream contour or powder contour to create a sculpted look, making them essential for makeup enthusiasts and professionals alike.