CommunityFlossWhich is better? Flossing before brushing or flossing after brushing? in Floss Which is better? Flossing before brushing or flossing after brushing? Eloane Y. I would think that flossing after brushing is best because the toothbrush has dislodged most larger things caught in your teeth and the floss comes in and does the rest. Start making your days count Try now