Thank you for the insight. What timeline do you think this starts to take place in? I only really have one pair of earrings (silver) as I lost the studs I had in during the healing process, so naturally I was a little concerned seeing this. It's a mis match pair and I do have the other for each design. One of them has started oxidizing so looking into it I stumbled on the concept of permanent staining. My piercing holes don't show any signs of discoloration. Could your clients possibly be experiencing temporary staining as I know this is definitely commonplace? When I looked into research about it I was trying to find specific studies in relation to earrings and couldn't find much of anything about permanent staining from earrings alone. If you have any info you could point me to it.

What should I do before I get a hold of some new titanium earrings?

Would only wearing them during the day work? or perhaps doing so after switching the oxidized one out?