Lavender is well known for it’s anti bacterial and healing qualities. Used for centuries to assist infection, stress and burns. Pure Lavender oil was used in the first World War on Mustard Gas Burns. It is the safest of all essential oils and can be used undiluted.
As with all essential oils a little goes a long way and should be used only as directed.
(Excerpts from Salvatore Battaglia, Complete Guide to Aromatherapy)