Here are 34 essential oils are dangerous and should not be used for aromatherapy:
1. Almond, Bitter or Prunus amygdalis, var. amara
2. Aniseed (Anise) or Pimpinella anisum
3. Arnica or Arnica montana
4. Boldo Leaf (Boldo Leaf) or Peumus boldus
5. Or Acorus Calamus Acorus Calamus-
6. Camphor or Cinnamomum camphorus
7. Cassia or Cinnamomum cassia
8. Cinnamon or Cinnamomum zeylanicum Bark
9. Costus or Saussurea lappa
10. Elecampane or Inula helenium
11. Fennel (Bitter) or Foeniculum vulgare
12. Horseradish or Cochlearia armorica
13. Jaborandi Leaf or Pilocarpus Jaborandi
14. Mugwort (Armoise) or Artemisia vulgaris
15. Mustard or Brassica nigra
16. Or Origanum vulgare Origanum
17. Origanum (Spanish) or Thymus capitatus
18. Pennyroyal (Europe) or Mentha pulegium
19. Pennyroyal (N. America) or Hedeoma pulegioides
20. Pine (Dwarf) or Pinus pumilio
21. Or rue Ruta graveolens
22. Sage or Salvia officinalis
23. Or Sassafras Sassafras albidum
24. Sassafras (Brazil) or Ocotea cymbarum
25. Juniperus Sabina Savin
26. Savory (Summer) or Satureia hortensis
27. Savory (Winter) or Satureia montana
28. Southernwood or Artemisia abrotanum
29. Tansy Tanacetum vulgare or
30. Thuja (Cedarleaf) or Thuja ocddentalis
31. Thuja Plicata
32. Or Gaultheria procumbens Wintergreen
33. Wormseed or Chenopodium anthelminticum
34. Wormwood or Artemisia absinthium
