Thanks for the advice but it only ever happens with MdC and using any blade. It isn't terrible but yeah day to day it builds. I am hoping dumbing down the scented with the unscented takes the edge off but will try the unscented alone first to see if it is something more. I will also try a blend in a small cup first before committing the whole cake.
Have you tried other soaps or creams with lavender oil in it? Some people have sensitivity to lavender as it can be an irritant, especially in EO form.