I'm sure this has been discussed before, but the search tool won't let me search for anything under 3 letters.

I used the EO Lemon Verbena a few years back. It almost completely erased my frizz, but it made my scalp go nuts. Itchy, itchy, itchy! Someone told me that the lemon may have been too acidic for my scalp and that I should try a different type. Is it possible that lemon could have been the culprit? Also, has anyone tried any of the other types, and if so, how did you like them?