Many parts of the clary sage plant can be used for making oil, including the leaves, flowers, stems, and seeds. Clary Sage oil is also widely used in aromatherapy. Aromatherapists and related alternative health practitioners often use clary sage as an essential oil in their treatments and it is known to be immensely beneficial in other purposes as well. These include dealing with cramps, heavy menstrual cycles, hot flashes and hormonal imbalances. It’s also known for its ability to increase circulation, support the digestive system, improve eye health and fight leukemia.