Like Joylynn, I also make my own salves using dehydrated comfrey leaves and
roots from plants that I have grown myself. I steep the comfrey in extra virgin olive oil and use one part beeswax to four parts infused oil. After straining the infused comfrey oil, you could either combine it with the other oil that you are using to make your salve or steep the strained infused comfrey oil with the other ingredients that you are using in your salve. I read somewhere that the comfrey roots contain the greatest concentration of allantoin.