Eucalyptus (Eucalyptus Radiata) is steamed distilled and certified organic from Australia! Have you ever hugged a Eucalyptus tree? They can be massive! Eucalyptus is great for opening the airways and creating a relaxing environment. This is a wonderful oil to have in your home. It can help relieve symptoms colds and coughs by supporting healthy airways. Roller bottles are already properly diluted for skin application so rub on you next and chest to help you breath during a cold.