This application provides, among other things, novel aqueous biphasic oralcare compositions comprising two distinctaqueous phases, useful for combining and delivering poorly compatibleingredients, for example to deliver effective levels of cationicantibacterial agents in combination with anionic polymers, e.g. that protectagainst erosion and staining, by addition of a stabilizingamount of a polyamine, e.g. lysine, and methods for making and using the same.
