What it is: A double-agent cheek brush with short and dense fibers for the perfect blending and contouring of blush.What it does: It features a combination of 50/50 fibers to deliver two unique results onto skin. One side provides a soft, diffused look while the other fuses color onto the skin for a polished, luminous complexion. M·A·C professional brushes are hand-sculpted and assembled using the finest quality materials. The 100% synthetic brushes incorporate the latest innovations in fiber technology for superior performance and improved longevity. Synthetic bristles