The E57 Firm Shader Brush features soft yet firm fibers and a short, flat brush head. It can be used with powder or cream products to apply intense, controlled pigmentation to the lids. The brush features SigmaTech fibers, which are synthetically engineered to outperform traditional animal hair. The technologically advanced filaments with specialized tips are 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 E57 Firm Shader Brush. Style Number: 5038498.