PROBLEM TO BE SOLVED: To provide aerosol type cosmetics for hair dye or decolorization which can maintain the liquid-tightness of a connection part between the opening part of a bag-shaped body inside a double structure container and the discharging pathway of a lid body even if the concentrations of the alkaline agent of a first agent and the hydrogen peroxide of a second agent are increased.SOLUTION: An aerosol type cosmetic for hair dye or decolorization comprises an outer container containing a first inner container filled with a first agent containing an alkaline agent and a second inner container filled with a second agent containing hydrogen peroxide, the space between the outer container and each inner container being filled with a propellant at an internal pressure of 0.2 to 0.8 MPa, each inner container being formed by laminating multilayer structural sheet materials having a polyolefin resin layer in an innermost layer and having a thickness of 20 to 200 μm, the alkaline agent of the first agent being two or more agents selected from the group consisting of ammonia, alkanolamine, and inorganic alkali, the total alkali amount being 0.2 to 2 mmol/g, and the second agent containing 4.5 to 9 mass% of hydrogen peroxide.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】第1剤のアルカリ剤及び第2剤の過酸化水素を高濃度化しても、二重構造容器内部の袋状体の開口部と蓋体の吐出路との接続部分の液密性を維持できるエアゾール型染毛用又は毛髪脱色用化粧品の提供。【解決手段】アルカリ剤を含有する第1剤が充填された第1内容器と過酸化水素を含有する第2剤が充填された第2内容器とを収納する外容器を備え、 外容器と各内容器との間の空間に内圧0.2~0.8MPaで噴射剤が充填され、 各内容器が、最内層にポリエチレン樹脂層を有する厚さ20~200μmの多層構造シート材を貼り合わせて形成され、 第1剤のアルカリ剤が、アンモニア、アルカノールアミン及び無機アルカリからなる群より選択される2種以上であって、総アルカリ量が0.2~2mmol/gであり、 第2剤が、4.5~9質量%の過酸化水素を含有する、エアゾール型染毛用又は毛髪脱色用化粧品。【選択図】なし
