So...you do an Insights scan, or you look up an issue in the Essential Oil Desk Reference, and...you don't have the "right" oil. Now what do you do?? Easy peasy! Use what you've got!
Yes, the molecules of specific oils are specially suited to stimulate certain receptors in the body. Some administer best to your digestive tract, some to the cardiovascular system. Others work best on the muscles, or the pancreas, or nervous system...you get the point.
Dr. David Stewart, in The Chemistry of Essential Oils Made Simple, likens the oils to employees in a company that are trained to do certain jobs, but they aren't trained to do others. There are secretaries, machine operators, shipping people, customer service and sales people. But, when a company gets into a crunch in one department, they will sometimes call on these other departments to help with some temporary assistance, even though they are not trained in that department. Then, once the crisis has passed, those workers return to their normal duties.
Oils can do that, too. An oil may not be the "oil of choice" for a certain task, but in a pinch, it will still get the job done. How? Why? Oils follow intent. They respond to the directions you give them. Simply tell the oil what you want it to do, and it will happen. Dr. Stewart says they are not ordinary medicines created by ordinary means. They are God's agents for healing that He provided for us to use. Ezekiel 47:12 tells us, "There will grow all kinds of trees...Their fruit will be for food and their leaves for healing." Revelation 22:2 says, "And the leaves of the tree are for the healing of the nations."
Oils are not all chemistry. In quantum physics he says they would be considered "packets of possibilities" that will manifest what you intend. So, just remember, if you don't have exactly the oil called for, use what you have. You may be surprised.
We had our youngest and two of our grands with us at a local lavender farm a couple of years ago when they all had a brown tail moth caterpillar walk on them. The tracks were already showing up on their skin. One grand had already had a reaction to this caterpillar before, and it wasn't pretty. Normally, I would reach for Lavender...I didn't have any. All I had with me? Stress Away. I used it on all of them. Guess what? Just a bit later you never would've known any of them had any contact with that little pest. Would I have used that oil if I had been home with my stash of oils? Nope. Never would've crossed my mind. I used what I had and trusted it would work. It didn't disappoint.
Hope this gives you a little bit of freedom in using those oils!!