Double aerosol container (190a) comprising outer vessel (11), flexible inside bag (12) accommodated in the outer vessel and valve (13). The inside bag (12) is divided by means of middle constricted part (71) into upper and lower storage parts (27, 26), and the upper and lower storage parts are shut off from each other by means of partition member (72) at the constricted part. The valve (13) is fitted with a communication hole for communicating the upper storage part (27) with the inside of the inside bag (12) and flitted with dip tube (28) communicating with the lower storage part (26). The upper and lower storage parts (27, 26) are loaded with first contents (A) and second contents (B), which are different from each other, thereby providing an inside bag type double aerosol product. Two-pack type reactive preparations can be employed as a combination of contents of the double aerosol product The double aerosol product is suitable for use in, for example, a hair dye, an enzyme hair dye, a hair setting agent, an antiphlogistic analgesic, a glow inhibitor, a coolant, a pack agent, a cleansing agent, a shaving foam, a humectant, an antiperspirant, a vitamin or a skin softener.