Essential Oils That Require Extra Caution

EOs require extra caution

The Alliance for International Aromatherapists lists the following essential oils as those that should not be used without first being knowledgeable about the hazards that accompanies each essential oil on this list.

These essential oils are not considered “safe,” as they are either toxic, carcinogenic or dermal sensitizers/irritants.

Essential OilBotanical Name
Bitter AlmondPrunus amygdalus
Birch (Sweet Birch Bark & White Silver European)Betula lenta, Betula alba
Boldo LeafPeumus boldud
CalamusAcorus calamus
Camphor (Brown & Yellow)Cinnamomum camphora
CassiaCinnamomum cassia
Cinnamon (Bark)Cinnamomum zeylancium
CostusSaussurea lappa
ElecampaneInula helenium
Fennel (Sweet)Foeniculum vulgare
HorseradishArmoracia rusticana
HyssopHyssopus officinalis
Jaborandi (Leaf)Pilocarpus jaborandi
MugwortArtemisia vulgaris
MustardBrassica nigra
Parsley SeedPetroselinum sativum
Pennyroyal (European/N.American)Mentha pulegium, Hedeoma pulegioides
Pine (Dwarf)Pinus mugo
RueRuta graveolens
Sassafras/Sassafras BrazilianSassafras albidum, Ocotea cymbarum
SavineJuniperus sabina
SouthernwoodArtemisia abrotanum
Tansy (Common)Tanacetum vulgare
Thuja (Cedarleaf/Western Red)Thuja accidentalis, Thuja plicata
WintergreenGaultheria procumbens
WormseedChenopodium anthelminticum
WormwoodArtemisia absinthium