An applicator for a hair product includes a handle having at least a first end, a second end, and a longitudinal axis, and a brush on the first end of the handle. The brush includes a base and a plurality of brush members extending from the base. The base has at least three protrusion including a first protrusion extending in a first direction substantially perpendicular to the longitudinal axis of the handle, a second protrusion extending in a second direction substantially opposite to the first direction and substantially perpendicular to the longitudinal axis of the handle, and a third protrusion extending in a third direction facing away from the handle and substantially parallel to the longitudinal axis of the handle. Also disclosed are systems for applying a hair product to hair and methods for applying a hair coloring with an applicator.