Bought 2 of these treated cloths recently and they seem to be the ticket to combat oxidation on steel, brass and nickel silver. It will dry to a haze and leave it that way.
This isn't the best smelling stuff when it gets on your hands. I suggest wearing a latex glove. My first experience took me repeatedly washing my hands to get the chemicals off my skin.
Also, the package says seal the cloth tightly after use. Well it doesn't come in a zip lock bag so get your own.