Periodic graphics: Soap versus body wash

Hi Kevin, thanks for the feedback. As I'm sure you can understand, the space available for these graphics means we have to be a bit selective about the information included. In this case, we decided to include the fact that sodium hydroxide is used in the manufacture of solid soaps, while potassium hydroxide is used to manufacture liquid soaps. As there's no further discussion of liquid soaps in the graphic, detail on the various other differences was not included.

Similarly, in the right-hand column discussing body washes, we decided to stick to the term already defined in the graphic, surfactants, rather than introduce additional terms that would also require definition.