Does anyone know if shiso oil is paleo?

Is flax seed?  I can't imagine it is, but...

I started using walnut oil and my skin is now a mess.  Similar to the
reaction that I used to get with peanut butter.  Does anyone else experience
this type of problem with oils?  No I'm not allergic to anything.

I just dont want to use only olive oil, it gets very boring..

Judith