Not all natural plants or plant products are beneficial to health. Deadly nightshade can be poisonous and stinging nettles sting. The following essential oils should NOT be used under any circumstances.

SOME ESSENTIAL OILS LIMITED USE

Bitter almond Rue
Boldo Leaf Sassafras
Calamus Savin
Yellow Camphor Southernwood
Horseradish Tansy
Jaborandi Left Thuja
Mugwort Wintergreen
Mustard Wormseed
Pennyroyal Wormwood
Essential oils of unknown origin