An interchangeable retractable hair brush includes a retracting brush element and a brush case. The retracting brush element includes a brush base and a brush body. A spring loaded detent pin is retained in the brush base. A notch is preferably formed in the brush base for brush bodies with a round cross section. The brush body includes a plurality of brush projections. An inner perimeter of the brush case is sized to slidably receive the brush base. First and second location openings are formed through a wall of the brush case to receive the spring detent pin for retaining the brush body in retracted and extended positions. A lengthwise projection extends from the inner perimeter of the brush case. The lengthwise projection is sized to be received by the notch. The retracting brush element and the brush case preferably come in different styles, shapes and colors.