You are talking about the surface on the exterior of your hood right?
Goo-Gone would be a good choice.
For minor cleaning like dust and water spots, a glass cleaner like windex is good.
Then finish with Zep Stainless Steel cleaner to polish.
Rub with the grain of the steel.
You can get all of these products at Home Depot.
If it aint broke, Break it!
Then rebuild it better.