The Sigma E46 Shader Inner Corner Brush features a small, tapered oval brush head perfect for adding color to the inner corners of the eye. Its beveled tip fits into the crease for the sharp application of product. It's made with 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 E46 Shader Inner Corner Brush. Style Number: 5038868.