How many makeup brushes do you really need? We’ve edited it down to 3 Sonia Kashuk must-haves that’ll maximize your beauty routine. 1. Use a fluffy dome-shaped brush for eyeshadow or concealer. 2. A powder brush can be used for dusting on blush, bronzer and powder, or blending foundation or BB cream. 3. A small, angled brush works for eyeliner, to shape brows, or even line lips.