PROBLEM TO BE SOLVED: To provide an oral cavity care method for achieving oral cavity care by an ozone fine bubble liquid, for properly managing diameters and density of the fine bubbles, capable of storing the ozone fine bubble liquid for a long term, and exhibiting odorous component decomposition and antiviral effects, in addition to a sterilization effect.SOLUTION: There is provided an oral cavity care method using the ozone fine bubble liquid, in which ozone gas density of a liquid concentrate of the ozone fine bubble liquid is 100 ppm or greater, the ozone fine bubble liquid has a sterilization action even when the ozone fine bubble liquid is diluted until the ozone gas density of the ozone fine bubble liquid becomes 4 ppm or less, the ozone fine bubble liquid has ozone gas density of 4 ppm or greater after being stored in refrigeration storage for 1 year or longer period, the ozone fine bubble liquid has odorous component decomposition action and antiviral action in addition to the sterilization action.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT
