Grapefruit oil is cold pressed from the fruit's golden rind. Native to the Caribbean, grapefruit is thought to have been born from an accidental union of pomelo, the largest citrus fruit, and sweet orange. An eighteenth-century Welsh sailor described it as one of the 'seven wonders of Barbados', but it was not scientifically considered distinct from pomelo until the mid-nineteenth century. The essential oil is (unsurprisingly) pretty citrusy and does not differ greatly from orange and lemon oils. However, it has a distinctively herbaceous side, almost woody - a little like vetiver - and a hint of green, slightly minty.