I've seen a lot of "Top 10 Essential oil" type lists, and lavender essential oil is typically amongst the first few oils listed. Lavender oil was the #1 favorite oil chosen by aromaweb's visitors during the favorite essential oil poll. and it's no wonder. Lavender oil has a beautiful, versatile aroma. it is anti-bacterial and is a must have for your first-aid kit. its calming and sedative properties make lavender essential oil a wonderful oil to help relax, fight stress and to promote sleep. and when properly diluted, it's amongst the safest of essential oil.