Six Essential Oils to Use to Improve Concentration and Productivity I am guessing aromatherapy isnt the first thing you think of when you are trying to cram for exmas or want to improve your productivity and creativness in work.  Maybe you should consider using essential oils though as smell is one of our strongest senses and very capable on influenceing positve brain activity.  THE SCIENCE BIT: Olfactory bulbs link to the limbic system and directly connect to the areas of ...