Riddle

You use it between your head and your toes, the more it works the thinner it grows. What is it?

Choose an answer

A.A towel
B.A sponge
C.Shampoo
D.Soap
Hint: It's a word with 4 letters, starting with "S".

Answer

Soap

Why this is the answer

A bar of soap is used to wash your entire body from head to toe, and it wears down and shrinks the more you use it.

This riddle is filed under "What Am I?" Riddles and rated Easy.