Castor oil is obtained from seeds of the castor plant. The colour of the oil varies from colourless to pale yellow and has mild or no odour. The oil is a bit viscous and consists of fatty acids like linoleic acid, oleic acid and various other important components also. The castor plant is a ver fast growing shrub and it grows up to a height of 12 metres. It has glossy, long leaves with red shaded flowers.