because they have so many oils to choose from. i cam e out of thee today with almond oil, walnut oil, rice bran oil, and apricot kernal oil. and i have a ton of oil at home!
oh well, i am going to try them all. i dont know how i will ever come up witht he perfect pulling oil. tell you this much, using a combo of olive and sunflower and sesame is really good. the pull doesnt vary as much as they do seperately and it has not diminished in the "strength" of the pull. now theres some Science for ya to hang your hat on!!!!