The method of claim 17, wherein the anionic surfactant is selected from the group consisting of alkyl sulfates having the formula: R--SO3 M, wherein R is a fatty alkyl or alkylaryl group and M is a counterion selected from the group consisting of Na+, NH+ 4, Mg++ and triethanolamine; ether sulfates having the formula: R--O--(CH2 CH2 O)n SO3 M wherein R is a fatty alkyl or alkylaryl group and M is