Simplify the following text for a Grade 3 native English-speaking person.
Original: Eyebrow brushes and shaders are also used to further define the eyebrow . A fairly recent trend in eyebrow modification is in the form of eyebrow tinting , in which permanent dye , similar to that of hair color , is used on the eyebrow , often to darken them .
Simplified: ( ( File : Black eyebrow .