I started with sunflower oil which I just bought from the supermarket which cured me of a number of things in under a week. I did not know you needed to rotate them and persisted with this oil for a while. In the last couple of months I tried sesame from the health food store as well, not to be confused with the toasted variety. I did not notice anything but recently after almost finishing that bottle of oil and swishing for a month I got into coconut. It has been mentioned here that these are the main effective oils - sunflower, sesame and coconut. With the coconut I have noticed my allergies improve substantially, I have chemical related sensitivities and going into shops with cleaning products I would usually bring on a reaction. Also turpines from plant gum and aromatherapy used to be an issue for me, after 12 months oil pulling now, I don't seem to have that problem anymore. Oil pulling has done wonderful things for me. I do it every day with joy as it has saved me from many illnesses and costly medical and dental bills.