There are provided oral mouth rinse compositions, consisting essentially of: a) 1 20 wt % of an orally acceptable peroxide, b) 0.5 15 wt % of an orally acceptable sulfate, bisulfate, pyrosulfate salt of an inorganic cation or mixtures thereof, and c) water to 100 wt %. There are further provided methods of preparing and using said compositions as well as kits for maintaining the components to prepare said compositions.