I've worked with EO's for many years and thru all my research and use for PAIN, I find that Wintergreen, Marjoram, Frankensence, Myrrh and Rosemary are my best help for Pain in my knee. A friend who is also into health care as I am, just sent me info on Copaiba Oil and it's said to be very powerful for pain issues, little is to be used. This oil is from Brazil. So I probably will order it as it' sounds very good and very affordable. It can be added to a carrier like coconut oil or olive oil. Now I realize MOST here are not interested in this type medicine but I'm posting anyway.