So I've been using borax to thicken and neutralize and after using LS it's starting to be a little itchy on my legs. My mom had to take a break from using it because she started to get a bit of a rash. Curious if it's the borax? Most of my body wash recipes are 5-10% superfated so I don't think it's any excess lye. If not the borax could it be EO or FOs?