Like most people already I agree the allantoin solubility is going to be an issue, although I doubt it is the cause for the current sensitivity issues being observed.
I also agree 1% of EO is a very likely candidate.
Plus I also have concerns around the preservative.
I am also interested in knowing what the Hydrosol is-even though it is w/s what else is in it? You could easily test this out by replacing with water.