To fight the cold, treat headaches, reduce stress and promote mental clarity, add 6-8 drops of essential oil to the diffuser. Alternatively, add 6-8 drops of essential oil to warm water and relax in the bathtub for at least 10 minutes. To relieve dysmenorrhea and menstrual cramps, add 6-8 drops of essential oil to warm water and relax in the bathtub for at least 10 minutes. Alternatively, add 15 drops of essential oil to 50ml of the carrier oil of your choice and massage it onto the abdomen.