This applies to any citrus fruit. Orange, grapefruit, lime, and even pineapple. I purchased organic Sweet Orange Oil from Whole Foods for $4.49. I drop a few drops in my palms, rub them together and inhale, then rub my hands over my hair. It helps me to re-focus and refresh. Repeat as needed You can also mix your oils in an odorless carrier oil such as sunflower or almond oil to create a yummy moisturizer for body and hair.