Why does a bar of soap produce a great lather when it’s new, then not at all when it’s smaller?

Question

It’s supposedly the same soap through and through, all the way to the core of the bar, right? Why does it react so differently to water and being rubbed on skin when it is reduced to a sliver?

In: 718

Answer 1

Depression era trick I learned from my grandmother was to unwrap all the bars of soap when you bought them. 1) they could send in the wrappers to get towels and such, 2) when the bars dry out they last longer.