Wax on, wax off...
I just always make sure I wipe down my equipment with a towel every time, and I do use Ballistol on any rustable metals every couple of months (which is actually not a lot on a Vixen
Nearly ALL aluminium or VERY well painted)
Had a small reflector that had a rusty tube. Cleaned it up with a wire wheel and repainted it with hammertone as an undercoat before the colour coat. Hides a LOT of boo-boos