One great tool, three great brushes. This adjustable brush transforms into three different lengths. Each with there own specialty.
Powder Brush - pull the retractable arm down all the way so the brush is open completely, and use it as a powder brush for overall blender.
Blush Brush - pull the retractable arm up 1/3 of the way and use it as a blush brush to highlight the cheekbones with a little more concentrated coverage.
Contour, Shading and Concealer Brush - pull the retractable arm up 2/3 of the way and use bronzer colore to contour on the cheekbones, jowl lines and eye area for the most concentrated coverage and detailed application. You may also use this brush position to use the foundation colore as a concealer.