| 摘要 |
PROBLEM TO BE SOLVED: To prepare a two-pack type hair cosmetic which uses an aerosol container comprising an outer can and a plurality of resin-made flexible inner containers stored in the outer can, inhibits the decomposition of hydrogen peroxide contained in the second agent, when receiving the first agent containing an evaporable alkali agent in one of the resin-made flexible inner containers and receiving the second agent containing the hydrogen peroxide in the other, and exhibits good dyeability and bleachability. SOLUTION: This two-pack type hair cosmetic comprises the first agent comprising an aqueous medium and an evaporable alkali agent contained in the aqueous medium, and the second agent comprising an aqueous medium and hydrogen peroxide contained in the aqueous medium. The second agent contains an acid compound having an acid dissociation index pKa of 2 to 5 at 25°C and its salt in a total amount of 0.001 to 1 mol/kg, and has pH 2 to 5, and the first agent and the second agent are separately received in the resin-made flexible containers, respectively, stored in the outer can of the aerosol container to be simultaneously discharged. COPYRIGHT: (C)2005,JPO&NCIPI
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