Sigma F15 Duo Fibre Powder/Blush Brush features a duo fiber blend with deep beveled edges, perfect for the application of highlight powder products on the cheekbone and works especially well with mineral products to achieve a natural, delicate finish. It features SigmaTech fibers, which are synthetically engineered to outperform traditional animal hair. They feature technologically advanced filaments with specialized tips developed to hold and deliver cream and powder products without any absorption into the bristles. Built to last, the fibers are hypoallergenic, antibacterial and will maintain their original shape and color even after several washes. The brush handle is made from lightweight, sustainably sourced wood that is durable and scratch-resistant. Brand: Sigma. Style Name: Sigma F15 Duo Fibre Powder/Blush Brush. Style Number: 5038826.