Overview Marjoram essential oil can be used for toothaches, muscle pains, inflammation, and even against symptoms of common colds. It also aids in muscle spasms. Marjoram essential oil can also be used to treat internal and external infections such as mumps measles, pox and other internal viruses. Common Uses Marjoram essential oil should be added to one's daily diet as it is a great natural supplement for brain functioning. It can be added in a cup of tea for easy consumption. A cup of tea with some drops of marjoram oil will also relief headaches, arthritis and rheumatism. In fact, Marjoram essential oil is one of the best to take daily as it also results in a healthy gut. The oil can be applied to feet to treat fungal infections on the nails. Open wounds also heal quicker when one applies diluted Marjoram oil to those wounds. Recommended Storage The ideal storage of essential oils is to keep it refrigerated, as the fridge keeps the components that make up the oils at their optimal levels. If you don't have space in the fridge, you can keep it in a cool, dark place. Essential oils have a shelf life of one to five years. You should however replace essential oils after three years to gain the most benefits out of the essential oils