General knowledge of aqueous soap solutions and their problems in application are reviewed.

A new way to prepare stable and clear aqueous soap solutions at room temperature and neutral pH is described

The used additive is the natural high efficiency sweetener Rebaudioside A (“Stevia”).

The surfactant character of Rebaudioside A is confirmed by cmc measurements.

A possible mechanism for the stabilization of aqueous soap solutions by Rebaudioside A is proposed.