Used it on an antique brass bed that I hadn't polished in 25 years because Brasso was such a pain. I tested on the bottom first. All I had to do was wipe it on and decades of tarnish came off. The bed looks almost like it did 125 years ago. Did absolutely no damage. I would recommend gloves. I was fine without them but others might not be. I have since used it to polish all the brass in the house. Awesome!!!