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The Aromahead Blog - Aromatherapy Education and Resources

Essential Oil Safety

by Maria on January 08, 2009

Essential oil safetyWhen working with essential oils, it is absolutely imperative that you have an understanding of essential oil safety.  Essential oils are much safer than over-the-counter drugs and chemicals, but it’s still important to know what you’re doing and know that some concerns exist.

Aromatics International has a page devoted to essential oil safety.  We recommend browsing it, and if you use oils regularly, you may want to look into one of the great books on the topic.

Internal Use

Some practitioners and teachers recommend internal use.  Internal use requires knowledge of anatomy, physiology, and the chemistry of essential oils. Oils should be used via the skin and inhalation until you understand the potential interaction of drugs and essential oils, know the safe oils to use (the safety issues are different for skin and internal use), and know the right dose and route of application appropriate for internal use.  Internal use also requires an understanding of pharmacokinetics--effects of the body on the oil, how the body metabolizes the oil and eliminates it, and what organs might be effected.  It sounds complicated because it is—and that’s why we don’t widely recommend internal use.

When using the oils on the skin at a 1%-3% dilution or through inhalation, most safety concerns are just not relevant. The oils are very safe.  However possible skin irritations can occur if an oil is old or oxidized.


Phototoxic Concerns and Irritation

Certain oils like Peppermint and Lemongrass can be highly irritating.  Others, like Lime and Bergamot can be phototoxic. Using these oils inappropriately could cause serious skin burns, and in some instances permanent discoloration to the skin.  As you can imagine, anyone using essential oils in bath or skin products or therapeutically needs to be aware of these concerns.


Use on Animals

Essential oil use on animals needs to be supervised by a vet and aromatherapist to formulate correctly.  Essential oils should NOT be used on small animals, cats, birds or small dogs. The results can be dangerous for your pet. Best results are with large animals like horses or cows.



We do not use essential oils on the skin of babies under one year of age.  Even up to ages three or four, you want to be very cautious and only use mild oils at 1% dilutions.  If you'd like to use oils, you can diffuse them into the room at any age!

Topics: essential oil safety, Aromatherapy Education, Phototoxicity

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