What it is:A brush with synthetic fibers for medium-to-full blending of all bareMinerals® foundations and concealers. What it does:This brush’s multidimensional tapered design provides extremely smooth, streak-free application, and its densely-packed, firm fibers lay down foundation and build coverage. Every fiber comes into contact with your skin during application, and the softly rounded, narrow tip lets you do detail work—seamlessly smoothing on foundation and concealer.