The English name "grapefruit" refers to the fruit growing in clusters, similar to "grapes." Known for its tangy, bitter taste, the grapefruit is the spherical, orange- and lemon-yellow fruit of an evergreen citrus tree. Grapefruit essential oil is extracted from the outer layer of the fruit's peel and is valued for its numerous uses and beneficial properties, as well as its refreshing aroma and distinctive flavor.