Mix equal parts eucalyptus and lemon verbena with 1/4 part of lemon grass. Pour one quart of boiling water over a handful of this mixture and let it steep for about 15 minutes. Strain out the herbs, allow the infusion to cool, and then add one quart of cold water. After you have taken your shower, pour one quart of the infusion over your head. Store the remaining quart in the refrigerator and use it the next day. Do this for nine consecutive days.