For many this little bit of information will be NEW and hard to believe....it was for me when I found it out 2 years ago, given I'd been doing it most of my life!
NEVER use an oil burner for essential oils! Yes that's right! Only use a Diffuser!
Why you ask? Very simply, when you heat oils it will do two things - if the oil is pure, you burn off all therapeutic qualities of the oil and just end up with a nice smell in the air. If the oil is less than pure, you end up burning toxins into the environment. This was a scary concept for me given I'd been burning oils most of my life, some pure, some not.
So PLEASE, regardless of the oils you use, ALWAYS Diffuse.
Young Living essential oils are always diffused, and everyone receives the benefits!