The present invention provides compositions comprising from about 0.01 to about 3% by weight of the composition of one or more Nα-acyl acidic amino acid ester salts represented by the formula I:wherein R1 is an alkyl group having from 1 to 8 carbons, R2 is an alkyl group having from 6 to 30 carbons, n is from 1 to 6 and X− is an anion a zwitterionic surfactant an alcohol represented by R3—OH, wherein R3 is an alkyl group having from 2 to 6 carbons an aqueous vehicle and an oily component, wherein the composition has a pH of less than 7. Also provided are methods of inhibiting plaque in an oral cavity comprising the step of introducing a composition of the present invention into the oral cavity and dispensing devices containing compositions of the present invention.
