This works. It helps remove some food stains. I love tea and coffee and berries and I have older teeth. I notice a difference when I use this. I don't always rinse. I sometimes pour a bit on the toothbrush itself and brush it on. And then pour a bit on top of the toothpaste. Either ways--rinsing, using on brush--has a lightening effect. Be careful or your gums might end up pale/with white spots for a spell. Don't overuse.