Safety data is mandatory knowledge for anyone using essential oils , both professionally and for home use and before using on the skin or in the air.
We have years of safety data both on essential oils and various components of them so we have a vast knowledge of what is safe and not.
There are known irritant oils as well as sensitizers and phototoxic oils.
Most importantly, please keep out of reach of children! children have been harmed ingesting or spilling on themselves!
Any one considering a course of study using these oils needs to know and understand the material already collected and how to use the knowledge to keep themselves safe.
Know the safe oils and how to dilute them properly; get to know one oil at a time, study it and explore how it makes you feel.