PROBLEM TO BE SOLVED: To provide a hair tonic excellent in hair-growing effect, effect for imparting voluminous feeling to hair, effect for improving tension and stiffness of hair, effect for improving combability of hair, and also excellent in feeling of use having no sticky feeling after use or the like.SOLUTION: This hair tonic includes (A) a 0.005-0.5 mass% copolymer obtained from a 30-90 mol% monomer represented by formula (1) and a 10-70 mol% monomer represented by formula (2), and (B) a 0.0001-5 mass% leaf extract of a young tree of eucalyptus in Myrtaceae family as an effective portion. (In the formula (1), R1 represents a hydrogen atom or a methyl group R2 represents -(CH2)n- and n represents an integer of 1-4). (In the formula (2), R3 represents a hydrogen atom or a methyl group R4 represents -O- or -NH- and R5 represents a 16-20C alkyl group).COPYRIGHT: (C)2013,JPO&INPIT【課題】育毛効果、毛髪にボリューム感を与える効果、毛髪のハリコシの改善効果、毛髪のくしどおりを良くする効果に優れ、かつ使用後のべたつきが無い等の使用感にも優れる育毛剤の提供。【解決手段】(A)式1で示される単量体30~90モル%と式2で示される単量体10~70モル%とから得られる共重合体を0.005~0.5質量%、(B)フトモモ科のユーカリの幼木の葉抽出物を有効分として0.0001~5質量%含有する育毛剤。(式中、R1は水素原子又はメチル基を表し、R2は-(CH2)n-を示し、nは1~4の整数である。)(式中、R3は水素原子又はメチル基を表し、R4は-O-又は-NH-を示し、R5は、炭素数16~20のアルキル基である。)【選択図】なし