Weeeeeellllll, WD-40 is actually "Water-Displacement (formula #) 40" so it should work. We used to shine countertops & all chrome fixtures & even the doorknobs with it when we were cleaning the bath house in a Florida State Park....it not only shined things right up, but they never EVER had a rust problem with their fixtures, and everyone else always did. Only thing you've gotta watch out for - don't let any over-spray get on the floor, especially in the bathtub...or you'll end up on your butt.