PROBLEM TO BE SOLVED: To provide a hair restoration/hair growth agent that can exhibit improved hair restoration/hair growth effects.SOLUTION: The present invention provides external compositions for hair restoration/hair growth comprising extraction components extracted from algae gametophytes.SELECTED DRAWING: Figure 1【課題】より優れた発毛・育毛効果を発揮できる発毛・育毛剤を提供する。【解決手段】本発明は、藻類の配偶体から抽出された抽出成分を含む発毛・育毛用外用組成物に係る。【選択図】図1