Cold pressed straight from the peel of Citrus sinensis, which is why it smells like standing next to someone peeling an orange rather than like orange flavouring. Juicy, bright and immediately recognisable, and one of the few oils nobody in a household objects to.

The fruit is grown organically in Italy, Mexico and the United States, and the crop is USDA certified, meaning no GMOs and no synthetic pesticides or fertilisers. Diffuse three to four drops per 100 mL of water; on skin the maker's range is 2 to 5 percent in a carrier. It carries Plant Therapy's KidSafe, Pregnancy Safe, Nursing Safe and Pup and Pony Safe designations.