To effectively execute hair growing by heating chemicals stored in a chemical storage part by a steam generation part, cooling it together with steam generated from the steam generation part, atomizing it and spraying it from a spraying part.

For this hair growing brush, brushes 2 are flocked so as to constitute a comb around the bottom part of a main body 1 and many holes for spraying liquid chemicals are formed on the center part of the bottom part. The chemical storage part 4 for storing a hair growing agent, the steam generation part 5 disposed near the chemical storage part 4, a cooling pipe 7 for guiding chemical components volatilized from the chemical storage part 4 to an atomization part 6, the spraying part 8 for jetting mist generated in the atomization part 6, a driving means 9 for rotationally driving the brushes 2 and a power source 10 are arranged in the inside. The steam generation part 5 is provided with a heating body 5a near the chemical storage part 4 at the bottom part and the chemical storage part 4 is provided with a guide pipe 4a connected to the cooling pipe 7. The spraying part 8 jets the mist atomized by the atomization part 6 to the lower part of the main body 1.