Rosemary essential oil is often used for alertness and stimulating memory. Dap a little into a handkerchief or cotton ball and inhale as needed. It can also keep you alert during long car trips or a long day at work. You Might Also Like Flower Essences December 27, 2013 Olive Leaf extract can be used to help fight all types of infections November 28, 2018 Meditation Products and Practitioners January 13, 2014