For topical use H & A makes Compound Arnica oil (keep away from the eyes or mouth), that or Hypericum oil can be useful. Internally for facial nerve pain I often use formulas continuing some of these herbs: Mullein root, Jamaica Dogwood (low dose herb, it must be used carefully), St John’s wort, Gambir/Gou Teng or Siler/Fang Feng. The supplement PEA Palmitoylethanolamide can also be useful for nerve pain.