i have been oilpulling since may 4 never missing a day. after a month i noticed stains on my teeth. fortuitously i had an appointment with the dentist and she cleaned it nice and shiny. now two weeks later, last night i noticed some stains have reappeared.
i use 1 tablespoon ofvirgin coconut oil all the time. sometimes mixed with 5-10 drops of cayenne pepper or 5-10 drops of oregano oil. i then swish with salted water for a fe wminutes and then clean my teeth with herbal toothpaste. at night i may swish using clay and water and then swish it with water.
btw i even switched toothpaste after the first discoloration was cleaned.