Hazardous Essential Oils

[Rhiannon]

Not all essential oils are suitable for use in aromatherapy. Just because something is natural doesn't necessarily mean that it's safe.
Here is a list of essential oils that are not recommended for use unless by an aromatherapy practioner.

Ajowan
Trachyspermum copticum

Arnica
Arnica Montana

Bitter Almond
Prunus dulcis var. amara

Boldo Leaf
Peumus boldus

Calamus
Acorus calamus var. angustatus

Camphor
Cinnamomum camphora

Deertongue
Carphephorus odoratissimus

Garlic
Allium sativum

Horseradish
Armoracia rusticana

Jaborandi
Pilocarpus jaborandi

Melilotus
Melilotus officinalis

Mugwort
Artemisia vulgaris

Mustard
Brassica nigra

Onion
Allium cepa

Pennyroyal
Mentha pulegium

Rue
Ruta graveolens

Sassafras
Sassafras albidum

Spanish Broom
Spartium junceum

Sweet Birch
Betula lenta

Thuja
Thuja occidentalis

Wintergreen
Gaultheria procumbens

Wormseed
Chenopodium ambrosioides var. anthelminticum

Wormwood
Artemisia absinthium