I’m not sure that everyone who enjoys perfume is clear about the difference between an essential oil and an absolute, partly because the distinction often gets lost in the listing of notes, the hype, and the fact that there are vendors who sell “essential oils” purported to be from materials that do not lend themselves to the distillation of oils. If the price you see for “frangipani absolute” is absurdly cheap, what you would be buying is neither an essential oil nor an absolute. Re-sellers may not even be aware of this issue, perpetuating it among the users of materials for perfume and aromatherapy. There’s nothing wrong with a synthetic fragrance oil meant to smell like frangipani, in fact, it might smell more realistic than the natural extractions, but if that’s what it is, it should be labeled as such.
[Top and bottom photos are3 mine, orange peel photo from a commercial website]