Recently published results show that SANS is necessary for determining with confidence critical micelle concentrations (CMCs) of inverse micelles in nonpolar solvents.1 The recent work1 represents proof of principle, and now, to gain better understanding of the physical chemistry of reversed micellar CMCs, SANS will be applied to a much broader range of systems. Both solvent and counterion effects will be studied to determine influences on the CMC, as are well known for normal micelles in polar solvents (water).