Abstract: The present invention provides a mascara brush which, when an application liquid is applied with the front ends of brush bristle materials, can apply a large amount of the application liquid held in the mascara brush without being rotated and which, when cleaning is performed with the front ends of brush bristle materials, can perform cleaning with a large amount of a cleaning liquid held in the mascara brush without being rotated. In this mascara brush, a large number of the brush bristle materials are radially provided around a core material. The mascara brush has a brush portion which is constituted of the radial brush bristle materials gathered around the core material and formed into a bundle along a core axial direction. Around the brush portion, there is a space around the core material along the core axial direction. The brush portion may have hook portions bent like hooks at the front ends of the radial brush bristle materials.