In brief, the present invention is directed to a method and composition for simultaneously shampooing and conditioning hair, while maintaining foam, that includes an aqueous carrier; an anionic cleansing surfactant, such as an alkyl sulfate or an alkyl ether sulfate, in an amount of about 5% to about 65% by total weight of the composition; and a polyethylenimine-silicone graft copolymer as a condi