Q. Is there such a thing as Lilac Essential Oil?
A. Unfortunately no, the blooms do not yield enough of the aromatic oil, and if one were able to capture enough, (via distillation or Co2 extraction) the cost would equate to approximately $1000 per ounce, therefore any product on the market that smells of Lilac is probably synthetically scented.
That being said you can capture the fragrance naturally, through a process called Enfleurage, where fragrant petals or blossoms are saturated in a natural oil or fat.
Note: Aromatherapy, like any other natural therapy, is intended to complement not replace traditional medicine. When in doubt about any medical condition, always seek medical advice. See legal