Hi Ria,
I don't know if you have Dr. Jernigan's new book and in Chapter 13 called Remedy Suggestions and the Associated Emotional Conflicts for Specific Symptoms he writes this on page 190:
Facial paralysis (Bell's Palsy):
Helichrysum Oil (by Young Living) applied topically over the affected area as well as the front and back of the external ear, has shown to apparently cause the nerve fibers to regenerate and restore normal function.
Primola Oil (by Wala) is applied topically and is used in cases of muscle atrophy from disuse, which is the cause in palsy.
Don't know if that helps as I never used any oils but it sure is interesting!
Denise