Why does bar hand soap crack or get dirty ridges in it?

it cracks when it gets dry, %26amp; the ridges are dirty cuz some of the oil %26amp; ect. from your hands gets trapped in there. Its really grose, but doesn't effect how well it works.Why does bar hand soap crack or get dirty ridges in it?
cause its not used often.Why does bar hand soap crack or get dirty ridges in it?
It is drying out.
It goes like that when its not used


So you now know that regulars in that bar never wash there hands


YUK
Buy Dove brand, and you won't find this happening.
maybe because a pub is a very used place which many people happen to use the bathroom after a pint or two and with the bar and other things to look after the landlady/lord may not always remeber to change the soap!!!
because of lack of use and it is drying out
Soap dries out fairly quickly (well the cheap bars do) and the reason there are dirty ridges is, that the user is fairly lax in the use of the soap and does not lather up properly.
its dray