To provide a composition for promoting hair growth.SOLUTION: A composition for promoting hair growth contains at least one selected from the group consisting of a compound represented by the following formula (I), a physiologically acceptable salt thereof and a physiologically acceptable hydrate thereof. In formula (I), R, R, Rand Rindependently represent hydrogen, a hydroxy group or -OCH, R, Rand Rindependently represent, hydrogen, -CHor -CHor -OCH).SELECTED DRAWING: Figure 5