... whitening powder 1.It can oxidate yellow and balck tooth caused by smoking,tea,coffee,red wine,areca catechu,food color. Teeth whitening powder. ... It can oxidate yellow and balck tooth caused by smoking,tea,coffee,red wine ... by smoking.Usage: scatter this powder on toothbrush or toothpaste when brush tooth.1-2 times a day. Tooth powder(JFT-096)