PROBLEM TO BE SOLVED: To provide an aerosol two-pack type hair dye which can be expected to maintain dyeing power and prevent uneven dyeing and which also has good mixing properties after the discharge of a first agent and a second agent.SOLUTION: A hair cosmetic is obtained by filling a container having a mechanism simultaneously discharging a first agent containing an alkaline agent and a second agent containing an oxidizer with the first agent and the second agent. The viscosity of the first agent and the second agent is both 50000 mPa s or less in 25°C. When the mass ratio of the set ejection amount of the first agent/the second agent is set to be X/Y, and the mass ratio of the ejection amount at the time of substantial use of the first agent/the second agent is set to D1/D2, the mass ratio D1/D2 is in the range of 0.6-1.4 times of the mass ratio X/Y with time.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】 染毛力の維持と染めムラ等の防2止を期待でき、第1剤と第2剤の吐出後の混合性も良好なエアゾール型二剤式ヘアカラーを提供する。【解決手段】アルカリ剤を含有する第1剤と酸化剤を含有する第2剤を同時に吐出する機構を有する容器に充填した毛髪化粧料であって、第1剤と第2剤の粘度が25℃において共に50000mPa・s以下であり、第1剤/第2剤の設定された吐出量の質量比をX/Y、第1剤/第2剤の実使用時の吐出量の質量比をD1/D2としたとき、質量比D1/D2が経時的に質量比X/Yの0.6倍~1.4倍の範囲内である毛髪化粧料。【選択図】 図1
