A Little Polish on Stainless
The right polish can be used effectively to put some life back in the stainless steel and not harm anything. Stainless steel can sometimes start to look cloudy/dirty/splotchy over time with lots of use. I personally use McGuires Finishing Polish on most of my stainless pistols/revolvers to keep that clean, pleasing, satin look. Some people get good results with the Flitz brand as well. Just a light rub with a clean cotton or micro-fiber cloth with an ultra fine polish will leave a very nice luster without any hairlines, scratches or swirls. Just don't rub hard and long in order to avoid that fake chrome look. It's an easy and rewarding process.