I totally understand your fears. Im the queen of fears when it comes to adding something to my diet.
It just helped me so much that I thought I would mention it. I think EFAs are what is finally healing me, but finding the right combo that didnt break me out or dry me out was almost impossible. There are other oils with both 03/o6 or just add both types to a meal a see what reaction you get then readjust the dosage. And start with one drop and work up-takes the fear out and makes you realize how much one drop of oil can do, I was amazed to see moisture from just a few drops of oil and I was amazed when just one drop of 03 could take away that moisture. Really makes me respect the body and has got me thinking about all the other tiny amounts of chemicals we absorb in our shampoos and other products.