Brasso for brass.
Vinegar. Here's how to polish silver with vinegar, which you may not know is an incredibly versatile cleaning tool. Return luster and shine to your silverware and jewelry by soaking it in 1/2 cup white vinegar mixed with 2 tablespoons of baking soda for two to three hours. Rinse under cold water, and dry thoroughly.
I use products sold in stores for cleaning silver and brass.
This is the product I use on brass as well and it work like a charm.. https://amzn.to/2ZosRR8
Hope it helps!
I sell a lot of silver on Ebay. Jewelry, silverware, serving sets. Silver polish like Wrights and dips like TarnX tend to remove some of the metal. The foil method doesn't work that great and still leaves a grey film that still needs to be removed. I use white toothpaste (not gel) and a damp toothbrush. For large items I use a damp cloth. Also works on copper, brass, gold, porcelain, ceramics, sneakers, plastics, etc. For my sales I needed one product for cleaning everything.
Hi Van - Not sure about brass, but this is the most effective and all-natural silver cleaning and polishing method that we use. It's also been featured by Hometalk. Hope this helps! Hugs, Holly
PS - We have a FREE eBook with recipes for all of my homemade and all-natural cleaners. You can download it here --> https://pinkfortitude.com/thank#GreenClean