In Bulgaria, Iran and Germany, damask roses (Rosa × damascena ‘Trigintipetala’) are used. In other parts of the world Rosa × centifolia is commonly used. The oil is transparent pale yellow or yellow-grey in colour. ‘Rose Absolute’ is solvent-extracted with hexane and produces a darker oil, dark yellow to orange in colour.
The weight of oil extracted is about one three-thousandth to one six-thousandth of the weight of the flowers; for example, about two thousand flowers are required to produce one gram of oil.