Hazardous Essential Oils
The below chart displays essential oils that should not be used in aromatherapy without the express administration by a qualified aromatherapy practitioner. Many should not even be used by a qualified practitioner. Do not assume that an oil is safe to use if it is not on this list.


Ajowan--Trachyspermum copticum
Almond, Bitter--Prunus dulcis var. amara
Arnica--Arnica Montana
Birch, SweetBetula lenta
Boldo Leaf--Peumus boldus
Broom, Spanish--Spartium junceum
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
Thuja--Thuja occidentalis
Wintergreen--Gaultheria procumbens
Wormseed--Chenopodium ambrosioides var. anthelminticum
Wormwood--Artemisia absinthium


Important Note: The information provided in the Oil Profiles area is for educational purposes only. This data is not considered complete and is not guaranteed to be accurate.


General Safety Information: Do not take any oils internally without consultation from a qualified aromatherapy practitioner. Do not apply undiluted essential oils, absolutes, CO2s or other concentrated essences onto the skin. If you are pregnant, epileptic, have liver damage, have cancer, or have any other medical problem, use oils only under the proper guidance of a qualified aromatherapy practitioner. Use extreme caution when using oils with children and give children only the gentlest oils at extremely low doses. It is safest to consult a qualified aromatherapy practitioner before using oils with children. A skin patch test should be conducted prior to using an oil that you've never used before. Instructions on conducting a skin patch test and more safety information can be found by visiting the Safety Information page. For very in-depth information on oil safety issues, read Essential Oil Safety by Robert Tisserand.
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