premise: In the over-all process , it is difficult to assign a `` pure '' role to each constituent of a built detergent formulation ; and , indeed , there is no more reason to separate the interrelated roles of the active , <mask> , antiredeposition agent , etc. than there is to assign individual actions to each of the numerous isomers making up a given commercial organic active .
hypothesis: the proper context for <mask> here should be a substance added to soaps or detergents to increase their cleansing action