Safety

Oils should not be ingested.
Keep oils out of the reach of children.
Children/elderly cut dose by half. Infants use even less.
Avoid these oils when spending time in the sun, as a component in them increases the chance of sunburn: Bergamot, Lemon, Lime, Angelica, and Orange.
Avoid these oils for people with epilepsy: Fennel, Hyssop, and Rosemary.
Avoid most oils in the first trimester of pregnancy except Chamomile, Lavender, Geranium, and Rose.
During pregnancy, nursing or with high blood pressure some stimulating oils should be avoided.

When you use the same oil too much or for too long, it’s possible to build up a sensitivity. Essential oils are released from the body through urine, exhalation and sweat. Follow a few simple steps to be sure your body is being purged of excessive oils.
Drink plenty of clear water every day.
Take breaks during the day and breathe lots of fresh air.
Vary the essential oils you use as much as possible.
Practice what you preach – take a bath when you get home from work. Perspiration draws the excess oils from your skin.