US Patent 10973311 Hair brush

A hair brush comprising: a first half that includes a first brush head connected to a first handle; a second half that includes a second brush head connected to a second handle; a plurality of first bristles and second bristles attached to the first brush head and the second brush head, wherein the bristles are arranged in multiple groups in which each group includes a second bristle surrounded by multiple first bristles; and a hinge that connects the first half to the second half, wherein the hinge biases the hair brush in an open position.