As the name implies, Bitter Orange Essential Oil possesses a bitter orange aroma reminiscent of a cross between the sweetness of Sweet Orange Essential Oil and the slight bitterness of Grapefruit Essential Oil. Although it's favored by some individuals, I have less experience in use of this particular oil. I personally tend to lean towards using sweet orange, grapefruit and the other citrus oils.
Bitter Orange Essential Oil is phototoxic. Refer to the safety information mentioned below.