PROBLEM TO BE SOLVED: To provide aerosol type cosmetics for hair dye or decolorization which can keep the ratio between the discharge amounts of a first agent and a second agent from a separately filled and simultaneously pressured and discharged double structure container, from the beginning to the end and over time.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 with an internal pressure of 0.2 to 0.8 MPa, the flexural rigidity E(f) and E(s) of the sheet material forming the first and second inner containers being 0.15 to 3.0 gf cm2/cm or less, the ratio E(f)/E(s) of E(f) and E(s) being 0.3 or more to 5 or less, the viscosity V(f) of the first agent being 10,000 to 145,000 mPa s, the viscosity of the second agent V(s) being 8,000 to 100,000 mPa s, V(f)/V(s) being 1.5 to 5, and the ratio M(s)/M(f) of the mass M(s) of the second inner container and the mass M(f) of the first inner container being 1.2 to 3.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】分離充填・同一加圧吐出型の二重構造容器による第2剤と第1剤との吐出量比を最初から最後まで、かつ経時的に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の噴射剤が充填され、第1及び第2内容器を形成するシート材の曲げ剛性E(f)及びE(s)が0.15~3.0gf・cm2/cm以下、E(f)とE(s)の比率E(f)/E(s)が0.3以上5以下、第1剤の粘度V(f)が10,000~145,000mPa・s、第2剤の粘度V(s)が8,000~100,000mPa・s、V(f)/V(s)が1.5~5、第2内容器内の質量M(s)と第1内容器内の質量M(f)の比M(s)/M(f)が1.2~3である、エアゾール型染毛用又は毛髪脱色用化粧品。【選択図】なし
