The delicate nature of many flowers means that steam distillation can not be used to extract the fragrant oil because the intense heat destroys the flowers, causing them to become compacted into a solid mass that steam is unable to penetrate. If the steam is unable to move freely through the flowers during distillation it is impossible to extract the oil.
An absolute oil is an essence, having a very high concentration of fragrance, and, like essential oils, a little goes a long way and care must be taken in its use. Absolute oils must be stored in dark, air-tight glass bottles, and kept away from heat. If stored properly, they can last for more than five years.