Essential Oil Safety Information

Adding essential oil, drop by drop, to a tablespoon of carrier oil.  

Essential oils are highly concentrated liquids that can be harmful if not used carefully. Implementing aromatherapy into your lifestyle shouldn't cause paranoia or undue worry. By treating essential oils as medicines and following the steps outlined below, you will be well on your way to safely enjoying the many benefits that aromatherapy can offer.

These safety guidelines are not a complete safety reference for the proper use of essential oils. When in doubt, consult your physician and/or a qualified and trained aromatherapy practitioner.

Essential oils should never be used undiluted on the skin. There are instances when experienced aromatherapy users and practitioners make exceptions to this precaution, but only once significant essential oil knowledge is gained should you ever attempt to apply an undiluted oil on the skin. Lavender and tea tree are listed by a large number of aromatherapy sources as being oils that can be used undiluted. Undiluted use of lavender and tea tree, however, should be avoided as severe sensitivity still could occur in some individuals. Again, the safest rule of thumb is to never use any essential oil undiluted.

I wrote the above paragraph several years ago. Recently, while reading Marge Clark's book Essential Oils and Aromatics, I read her personal experiences and her unfortunate long term consequences for having used lavender essential oil neat:

"One of my mentors reminds me 'sensitization is forever.' And I know she is right. Years ago I read the books saying that lavender oil could be used neat (undiluted). I very unwisely used undiluted lavender on broken skin, and consequently set up a sensitivity reaction. Today, almost two decades later, if I come in contact with lavender in any form, I will immediately start a new round of contact dermatitis that can take months to heal." [Marge Clark, Essential Oils and Aromatics (Sandy, UT: Silverleaf Press, 2008), 32.]

For more information, read AromaWeb's Guide to Diluting Essential Oils.

Some oils can cause sensitization or allergic reactions in some individuals. When using a new oil for the first time, do a skin patch on a small area of skin. Place a small amount of the diluted essential oil (never use essential oils undiluted on the skin) on the inside of your elbow and apply a bandage. Wait 24 hours to see if there is any form of reaction. Even if a particular essential oil is not known to cause irritation, this step should not be ignored. Even if an oil does not irritate you, it still can irritate someone else. It is important that you always keep that in mind.

Some essential oils should be avoided during pregnancy or by those with asthma, epilepsy, or with other health conditions.

Less IS More. When using essential oils, use the smallest amount of essential oils that will get the job done. If one drop will get the job done, for example, don't use two drops.

Not all essential oils are suitable for use in aromatherapy. Wormood, pennyroyal, onion, camphor, horseradish, wintergreen, rue, bitter almond and sassafras are some of the essential oils that should only be used by qualified aromatherapy practitioners, if ever at all.

Never let children use essential oils without the presence of an adult knowledgeable about their use. Most essential oils smell wonderful and many essential oils such as citrus oils can smell like they are safe to drink. Keep your essential oils away from children. Treat the oils like medicines that are poison in unknowing hands.

Essential oils should not be taken internally. Essential oils should only be taken internally after receiving a detailed consultation and prescription from a trained and qualified aromatherapy practitioner.

Essential oils are flammable. Keep them out of the way of fire hazards.