The present invention relates to a cosmetic brush in which the protrusion and retraction of a brush head is accomplished using a pushing bar in order to prevent the brush head from being damaged while the brush head protrudes from and retracts into a main body.The cosmetic brush includes a main body having an exit on a front side thereof and an insertion portion on a back side, an object member including a brush head which protrudes from and retracts into the main body through the exit, a pushing bar enabling the brush head to protrude from the main body, and a cover usually covering the exit of the main body and enabling the brush head to be protruded from the main body by a pushing bar.