What state of matter is shaving cream?

Shaving cream is a liquid soap with a lot of gas bubbles mixed in it. It's the gas that makes it so frothy and thick that it is able to keep its shape. When the shaving cream stands overnight, the liquid in it evaporates, and all that is left where the gas bubbles once were, is a very light and thin solid layer of soap. So you can see that shaving cream has the characteristics of all three states.