| abstract |
A color changing soap dispenser having a reservoir and a pump. The reservoir contains a color changing soap. The color changing soap contains a soap composition comprising water and a surfactant, an indicator dye which exhibits an observable color change at a color change pH, and a base selected from the group consisting of carbonate salts of group I and II elements, phosphate salts of group I and II elements, bicarbonate salts of group I and II elements, and hydroxide salts of group I and II elements. The color changing soap has a pH of greater than 7 and less than 13. The method of using the color changing soap is also disclosed. |