Blue Tansy is part of the chamomile family and is a rare flower. Blue tansy essential oil has a herbaceous aroma. It is extracted from the annual herb (aerial parts) by steam distillation. The uses of blue tansy essential oil for sciatica, asthma, nerve sedative, allergies and in skincare. However, the essential oil is contra-indicated for use with women who have an endocrine imbalance and in pregnancy. In addition, do not use in dilution above 5%. Is rich in sesquiterpense.