Oil pulling is the swishing of oil around the mouth. When oil pulling, a person swishes 1 tablespoon of oil for about 20 minutes. This practice is a home remedy and folk remedy, and it is not based on pseudo-science.
Oil pulling has been used as a folk remedy in India for many years. According to WebMD, the practice helps kill microorganisms, gingivitis and plaque that cause bad breath. Bacteria in the mouth get stuck in the liquid oil during the swishing process, and cells covered by fatty membranes adhere to each other after coming into contact with the oil.