Green, fresh and pleasantly sharp, rosemary is one of aromatherapy's great wake-up calls and a long-standing favourite for the desk or study. Tisserand has been blending essential oils in England since 1974, and this certified organic rosemary is steam distilled from the leaves and twigs of plants grown in Spain.

Add a few drops to a diffuser when you need a clear-headed atmosphere, or blend into a carrier oil for an invigorating massage after exercise. The oil arrives in a 9ml amber glass bottle with a dropper insert to keep pouring tidy. Always dilute before applying to skin. Not suitable for children under six, and those with epilepsy or high blood pressure should avoid rosemary oil. It blends beautifully with citrus, peppermint and eucalyptus.