Hi Jill, yep, EDTA is some kind of chelating agent, but it is apparently not advised for mercury toxicity. I think it is a weak chelator, but can make a person worse.

This might be why you're having some problems, hard to say though. Is the hair product you use shampoo? Or is it something that remains in the hair all day?

I'd stop using it. Not sure when the effects will die down, could be a couple of weeks or so....I'm guessing however. I'm just basing that on things that happen to me.

If it's not too serious usually it dies down within a week or two.