Just wipe on some Turtle wax. When we moved into our house the back bathroom has really pretty green toilet & sink...while dated there is still alot of life left in them and i'm a green freak...the sink had some hard water stains. I shined it up with some Turtle wax and it looks like new. AND it repels water too...I don't see why it wouldn't work on the stainless....see if you can find somehwere if there would be any chemical reactions....I can't imagine there would be but you never know..