A hair cosmetic material includes a first agent containing an alkali agent and a second agent containing an oxidizing agent. These first agent and second agent are used in a double structure container provided with a mechanism of separating the first agent and the second agent from each other and simultaneously discharging the both agents by a propellant. In the double structure container, a space for filling the first agent and a space for filing the second agent are each independently provided in the inside of a compressed gas filling space having a propellant for pressurization filled therein. Each of the first agent and the second agent is discharged in a liquid state, and each of the first agent and the second agent has a viscosity falling within the range of from 7,000 to 30,000 mPa·s at 25° C.
