Irritation.. Common causes of irritation from essential oils include: Using undiluted or insufficiently diluted essential oils on the skin. Adding undiluted or poorly diluted essential oils to a bath.
The undiluted use of essential oils on the skin can potentially cause severe irritation or sensitization. Read AromaWeb's Guide to Diluting Essential Oils to learn .
Certain essential oils can cause skin irritation as well as skin sensitizing â€“ and if you are prone to allergic reaction, you would be well advised to perform a skin .