Origin italyfrance ask any devout essential oil user which oil they couldn39t live without and chances are they39ll respond lavender lavender is one of the most versatile and effective essential oilsit is harmonizing when you are stressed and provides a relaxing sleep after a tough dayfor centuries lavender has been used to treat burns banish tension ease anxiety soothe muscle pains heal infections induce sleep and harmonize the sensesother uses include headaches sores ul