Due to its multi-dimensional tapered design, this brush provides extremely smooth, streak-free application. Its wide, densely packed base of firm fibres lays down foundation and builds coverage. The softly rounded, narrow tip perfectly enables detail work. Each fibre is tapered by hand to measure between .05 to .07 mm, enabling every fibre to come into contact with your skin during application. The effect? It repeatedly smoothes foundation and concealer just like water smoothing a stone.