Combining scents, normally associated with the culinary arts, with the distinctive smell of eucalyptus, this Nature's Truth Cleansing 4 Thrive pure essential oil is a botanical blend you can add to your diffuser or bath. Every Nature's Truth essential oil is meticulously tested in various stages by Nature's Truth's quality control experts to adhere to strict purity and quality standards; one of the many sophisticated tests Nature's Truth oils undergo is GC/MS testing (Gas Chromatography-Mass Spectrometry), which ensures the identity of different components within the oils. There is 15 mL of aromatherapy oil in a bottle.