what essential oil is good to diffuse for headache?
['Lavender oil. Lavender is often used to help people get to sleep and to reduce stress, anxiety, or depression. ... ', 'Rosemary oil. Rosemary oil is traditionally used to treat headaches and improve circulation. ... ', 'Peppermint oil. ... ', 'Chamomile oil. ... ', 'Eucalyptus oil.']