Stainless steel appliances look great in the kitchen, but they're prone to showing hard water marks and fingerprints. You frequently see this on the dishwasher (so many water stains) and the handles of the refrigerator (hello overuse).
http://www.thekitchn.com/how-to-clean-stainless-steel-appliances-with-vinegar-and-oil-cleaning-lessons-from-the-kitchn-205232