You can get Elemi oil at most health food stores that sell essential oils. There's no need to order it on-line, at least not where I live.

You need to make sure it's 100% pure Elemi essential oil that is therapeutic grade. If it's not therapeutic grade, it will not say it is on the bottle, and cannot be used. It must say on the bottle that it’s therapeutic grade.

I wouldn’t start with 10 drops. You might be very sensitive. I’d start with 3 and work up to 10. And remember it takes about 3 hours before the effects really kick in.