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 Meditation Products and Practitioners January 13, 2014 Sound Therapy June 24, 2014 herbs that help with Alzheimer’s April 3, 2014