Most of the work is leaving a discoloration where worn,
(copper, brass, nicker silver). Is it the material?
Probably. Unfortunately it is the nature of the beast.
Arthritus brecelets for example.[they don’t work BTY] About the
best fix is to tell the wearer to wear the piece when showering.
This works for bracelets,or such without stones.
I sometimes combine brass or copper with silver, but place
silver next to the body
Anything you paint, plate, wipe, or dip will come off
If it weren’t for electricity we’d all be watching television by candlelight.