The 972 Rounded Double Dome Blender brush is a unique double dome brush that allows for quick, effortless application and blending. It functions as a two-in one, multi-tasking brush so 1) you donâ€t need to hold multiple brushes in one hand, and 2) your kit stays less bulky. It consists of both a small and large dome. The small dome has a matte surface with micro wavy bristles that picks up more product for a thicker application. In contrast, the large dome has a shiny surface with straight bristles that picks up less product for a more lightweight and natural application. Apply foundation using the longer, flat side of the brush. Then, use the shorter side to diffuse and soften the foundation.