This is an old Native American tip: Use fine wood ash to polish either silver or brass. With your fingers or soft cloth rub on the oxidation. When shining nicely wash and dry your jewelry, etc.
Source: Ned, Navajo helper.
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The easiest and most frugal way to shine silver, silver plate and brass is with Tide and tinfoil! Line the bottom of a plastic tub with tinfoil, shine side up, throw in some of the powder detergent and let the silver soak for about 25 minutes. The chemical reaction oxidizes the tarnish and you can wipe it clean!
