housed within compression nut 112 when compression nut 112 is threaded onto the threaded end 103 of tube 102 the tube 102 and the diverter valve inlet are drawn together and against the gasket thereby forming a water tight seal it should be appreciated that functional equivalents of the mechanisms shown in fig4 6 may be used 0036 fig7 is an enlarged front downward perspective view of the cover 300 shown in fig3 showing a top surface 310 left 312 and right 314 sides and a front surface including three holes 330 340 and 350 for accommodating the protrusion of the primary shower head 130 metering valve knob 144 and secondary shower head 150 respectively through the front surface of the cover see also fig1 and 3 fig8 is an enlarged front upward perspective view of the cover of fig7 showing the side and front surfaces of fig7 and also a bottom surface 360 including a notch 364 for providing space for the supply tube 160 and the bottle cap 164 0037 fig9 is a front elevation of an alternative embodiment including means for selecting from a plurality of fluid reservoirs e g 410 and 420 as illustrated supply tube 160 depending from metering valve 140 is in further fluid communication with a switching valve 400 commonly known in the art and typically operated via a switching lever or knob 405 the switching valve 400 is provided so that an operator may select one of two differing fluids as required for specific conditions for application to the body through the secondary shower head 150 differing fluids may include lotions of differing scents medication properties or humectant properties when the switching valve 400 is selected to.