The invention relates to an improvement in the foam quality and ejectabilityin ejecting a mixed lotion composed of the first and second lotions constitutinga two-pack type hair-dyeing or -bleaching preparation in the form of foam by theuse of a squeeze container. The two-pack type hair-dyeing or -bleaching preparation(1) of the invention comprises the first lotion (A1) containing an alkali agent,the second lotion (A2) containing hydrogen peroxide, and a squeeze container(6) for ejecting a mixed lotion (A3) composed of the first and second lotions (A1,A2) in the form of foam. The first lotion (A1) or the second lotion (A2) containsa foaming agent and the mixed lotion (A3) exhibits a viscosity (at 25°C)of 1 to 100mPa s. The squeeze foamer (5) of the squeeze container (6) comprisesa gas-liquid mixing chamber (12), a foam homogenizing means (14) for homogenizingthe foam of the mixed lotion formed in the chamber (12), and an ejection opening(17) for ejecting the homogenized foam and the ratio of the total volume of thefirst and second lotions to the capacity of the container body is 0.30 to 0.60. In the body-part cross section of the container body, the ratio of the mixer axisto the major axis is adjusted to 0.50 to 1.0 with the area adjusted to 12 to 30cm
