Spearmint essential oil:
"Headaches, mental fatigue, nervous stress, shock, palpitations, vertigo, dizziness and fainting attacks can be treated by applying cold compresses to the forehead, smelling a drop of the oil on a tissue, or by using in a diffuser or, where appropriate, an air spray."
Purchon, Nerys & Cantele, Lora. The Complete Aromatherapy and Essential Oils Handbook for Everyday Wellness. (2014). p. 110