Dr Bo Hendgen is considered one of the world's leading authorities when it comes to Aromatic Medicine and she is the designer and maker of Twinkle Star.
Some Eucalyptus is recommended to er with caution however this is because of the extraction method and botanical strain. During some distillations on cheaper oils the extraction process is not taken to the final end product and therefore the Eucalyptus will be incomplete. This means that the effect on the body will be lopsided - so think of taking a Vitamin C tablet or eating an organic orange. Both offer Vitamin C but the orange also offers a whole range of other vitamins and minerals that assist with absorption and processing.
As an additional peace of mind please know that in each drop of Twinkle Star there is less than 20% Eucalyptus oil, the major components are Lavender True and Sweet.