Device for packaging a product has several components to be stored separately and mixed just before use of the product

Device (1) for the extemporaneous mixing of N components (A, B), comprising N compartments (2a, 2b) each having a first end (22a, 22b) and a second end (24a, 24b) opposite the first, each of the first and second ends being surmounted by a neck (22a, 24a; 22b, 24b) defining an opening (12), said device comprising N - 1 intermediate sealing means (14) for, when the N compartments are superimposed, isolate removably, each compartment or compartments which are adjacent to, actuator means (18) being provided for expelling said N - 1 intermediate sealing means (14) to form the mixture of N components, and first (8) and second (9) end closure means for closing the end openings of the first (22a) and the Nth (24b) compartment, one of said first or second means end closure comprising an aperture (26) for the d istribution mixture. According to the invention, the first and second ends of any of the N compartments are adapted to receive any of said means obturation.Ce device is usable in the field of hair dyeing.