Grapefruit is a citrus fruit is grown on a tree native to tropical Asia and the West Indies, but is now cultivated primarily in California. Red grapefruit oil is a citrus oil which is cold-pressed extracted from the peel of the grapefruit. The citrus oil cleanses and tones the skin, and it helps to improve the complexion by improving smoothness and suppleness. The fruity and zest aroma feels uplifting and refreshing.