The King of All Oils: It Can Help with Migraines, Anxiety, Depressions, and Even Epilepsy July 14, 2018 by Anya 16 Comments Frankincense oil is known as the King of Oils – and is one the most popular natural remedies on the market today. I use it daily to support health and if I ever had to pick just one oil to have, it would be frankincense.