Frankincense essential oil has been shown to have a positive effect on stress symptoms and improve concentration. The calming properties of this oil restore emotional balance and help overcome stress and despair. If you are still looking for a quality oil, you can always find it here Omani Royal Al-Hojari Boswellia Sacra Frankincense . Frankincense oil is suitable for inhalation or diffusing, as well as for topical application to the body for deeper penetration and a calming sensation. Frankincense has the ability to make other aromas more intense and intriguing.