An aerosol-type cosmetic for use in hair coloring or hair decoloring and equipped with an outer container that houses a first inner container filled with a first agent that contains alkali agents, and a second inner container filled with a second agent that contains hydrogen peroxide, wherein: the space between the outer container and the inner containers is filled with a propellant to an internal pressure of 0.2-0.8MPa； each of the inner containers is formed by adhering a multi-layered sheet having a thickness of 20-200[mu]m and having a polyethylene resin layer as the innermost layer thereof； the alkali agents in the first agent are two or more types selected from the group consisting of ammonia, alkanolamine, and inorganic alkali, and the total alkali amount thereof is 0.2-2 mmol/g； and the second agent contains 4.5-9 mass% of hydrogen peroxide.本發明之噴霧型染毛用或毛髮脫色用化妝品具備如下外容器，該外容器收納填充有含有鹼劑之第1劑之第1內容器與填充有含有過氧化氫之第2劑之第2內容器，並且 向外容器與各內容器之間之空間中，以內壓0.2～0.8 MPa填充噴射劑， 各內容器係貼合最內層具有聚乙烯樹脂層之厚度20～200 μm之多層構造片材而形成， 第1劑之鹼劑係選自由氨、烷醇胺及無機鹼所組成之群中之2種以上，總鹼量為0.2～2 mmol/g， 第2劑含有4.5～9質量%之過氧化氫。
