MUA Brush E6 Eyebrow With Comb A eyebrow Brush with Comb is ideal for brushing through the brows and combing through eyelashes. The flexible brush side: This bristled brush shapes and grooms eyebrow hair into place, creating a volumised, bushy effect. It's also useful for blending in previously applied brow colour. The solid comb side: This comb separates lashes and removes mascara clumps after application. It can also be used on the brows to give them a polished look.