Metals... That is a rare one, Im sorry for that..
Yes, and surprisingly, I can’t use hair color at all. There is metal in almost every hair coloring, it’s a fixative for the colorant. Could be lead, iron, nickel, or other metals, but they are there, as I found to my painful surprise.
All my jewelry is yellow gold, at least 12K. And still, some of that will break out my skin. It doesn’t help to use gold-filled jewelry, either, I can tell almost immediately.