I have had some reactions, mostly in my second holes (I think they are more sensitive). I really just work off of trial and error. If my ears don’t like it I won’t buy that brand again.

I will say Clair’s jewelry seems to affect my ears the most. I haven’t worn earrings from there in years.

To be most cost effective, I’ve started buying cheaper packs of lots of little earrings (I usually use studs) that I don’t mind mixing and matching of it comes down to it.