Abstract: A combination wherein the cap is provided with a shell which engages under a collar located near the upper side of the aerosol can by the provision of at least one locking lip located near the open bottom end of the shell. An operating arm is coupled to the shell so that a valve, forming part of the aerosol can, can be actuated so as to discharge the contents of the aerosol can. At the inner side of the shell a wing is secured to a part of the shell which can be pressed inwardly with respect to the other parts of the shell, the wing, at its side remote from the shell abutting against a part of the aerosol can and in the unloaded condition of the part of the shell, carrying the wing cooperating with the operating arm so as to prevent the operating arm from moving so as to open the valve.