The current invention is directed to a self-contained electro-expulsive actuator assembly capable of being attached and operating external to an object, and methods of providing an electro-expulsive force external to an object. During operation the deformation or flexing of the electro-expulsive actuator causes deformation of an integral outer skin which is overlaid over the outer surface of the underlying structure, thereby causing unwanted build-up of residues on the outer skin of the actuator assembly to be expelled.