The oils listed below present some risks of toxicity or of skin irritation and should not be used in aromatherapy unless administered by a fully qualified Aromatherapist.
ALL Essential oils can be hazardous if not used in the specified doses, below is a list of ones to avoid.
(Containing Prussic Acid)
BOLDO LEAF CALAMUS
ELECAMPANE FENNEL (BITTER)
SAVIN SAVORY (SUMMER)
In addition, there are some oils which have valuable therapeutic properties but which need to be used carefully with an understanding of possible undesirable effects. With the exception of BERGAMOT which is prefectly safe in use as long as exposure to strong sunlight is avoided, it may be wiser for the general reader to avoid these oils, leaving them to the trained therapist.
POSSIBLY TOXIC OILS
SAGE - Salvia officinalis
ANISEED - Pimpinella anisum
There are many well-substantiated reports of side-effects from the use of Sage oil. Aniseed presents risks of damage to the nervous system if used for any length of time. you should add these two to the list of oils not to be used at all.
HYSSOP - Hyssopus officinalis
There are some doubts about the safety of Hyssop, so it is best left alone.
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