Absolutes are highly aromatic liquid extracted from plant parts. They are a combination of pure plant essences and natural oils. The absolute oils are quite expensive to produce because the plant parts used for producing them usually contain very little oil. e.g. it requires more than 30 roses to produce 1 drop of Rose absolute oil. Absolute oil can be used to treat many mental and physical symptoms using aroma therapy techniques. They must be stored in dark, air-tight glass bottles and keep away from light. If stored properly they can last for more than five years.