At one time rose absolute was thought to be the first essential oil ever created. The gifted Arabic alchemist Avicenna (AD 980-1037) provides us with the earliest drawings of distillation equipment and oil extraction methods. And his writing give reason to believe that the first flowers to undergo the oil extraction process were the rose, the flower so beloved of Islam.
However discoveries made in the Indus Valley in 1975 have shown that essential oil extraction goes back much further than first thought, and we now have evidence of plant oil extraction dating to around 3000 BC.
Humans have used various preparations of flowers, bark, roots, leaves and resins for thousands of years, and pieces of burnt resins have even been found at the entrance to caves that were known to be inhabited in the Neolithic period (the last part of the stone age).