3-4 times a day. wake up(6am), showering after coming back from
school(2pm), shower at night(9pm), before sleeping(12pm or
1am).
i like to keep my breath fresh with the green tea toothpaste.
i became a brushing teeth freak
after i got braces.
btw, if you gurgle green tea after you've brushed your teeth, it'll
boost your immune system and wont let you get flus and colds so
easily. i saw on japan hour few years ago.