That's why I disinfect my razors before putting my restoration tools on'em and then just give them a quick wipe with alcohol when I'm done. I typically use 1% bleach solution and yes, it will cause some rust spots that clean easily.. It will also reveal any existing pitting and other imperfections. Once I clean and polish the blade and re-scale it, I hone it up and finally wipe it down with alcohol. No issues with the finish that way.