It should be noted that essential oils are a highly concentrated and medicinal substance, so some safety precautions need to be observed. For a healthy adult, most essential oils are safe to use within an appropriate dosage (as indicated above). However, when using essential oils for babies, children, during pregnancy, for the elderly or for those with a serious illness it is prudent to do some research to ensure that you use oils that are suitable and that you use the correct dose. As a general guide;
•The gentlest essential oils include Lavender, Sandalwood, Frankincense, Neroli and citrus essential oils such as Orange, Lemon, Lime, Bergamot and Mandarin.
•Citrus essential oils can produce an effect on the skin called photo-toxicity. Citrus oils applied to the skin and then exposed to direct sunlight causes the skin to be more prone to sunburn. To avoid this either use citrus essential oils at night or if you plan to stay inside for most of the day or use them in a diffuser/ inhalation.
•Essential oils need to be diluted with a carrier oil before being applied to the skin.