To make stainless steel appliances gleam like extractor hoods, oven tops, microwaves etc, after you've cleaned them rub a little oil (either baby oil or olive oil works bes)t on with a clean cloth or kitchen towel, it gets rid of any streaks and leaves it shining

i was in the chip shop a few weeks back and watched her spray all their stainless steal surfaces with wd40 ,,,at first i thought what the f*&% then i seen the shine it gave

I use babyoil on my sink and it brings it up really nice