Well, that was a small piece. Unless, of course, your hands are like André the Giant...
Although I'm probably not hyper
-sensitive, I am definitely sensitive to things. So, to some degree, I understand your trepidation.
I guess it comes down to what's more worrisome: a possible reaction -or- possibly not getting better.
Just go slowly.
I'm likely being pedantic, but here are some articles on "herxing."davidjernigan.blogspot.com/2014/05/just-say-no-to-herx-symptoms.htmldavidjernigan.blogspot.com/2015/05/doctors-against-causing-herxs-do-no-harm.html
Honestly, most of the time, when I see the word "Herx," I want to jump out my window. The only reason I haven't is because I'm only high enough to sprain (possibly break) my ankle(s). Then, I'd be sick AND unable to walk.