Suitable For Applying Eyeshadow Made Of Synthetic Fibers Professional Beauty Assistant Made With Love For Nature The Soft Killys Bamboo Eyeshadow Brush Is Made From Synthetic Fibers And Is Ideal For Applying Eyeshadow. Brush 04 Is Perfect For Even Application Across The Entire Lid, Thanks To Its Slightly Rectangular, Flat Bristles. Brush 05 Is Designed For Blending And Defining The Creases Of The Eyelids Or Highlighting The Inner Corners. For A More Perfect Look!