The term "foaming agents" refers to substances that are added to a liquid or mixture in order to create foam. Foams are created by dispersing small bubbles of gas within a liquid, and foaming agents help to stabilize these bubbles so they do not collapse back into the liquid. These agents can be surfactants (surface-active agents) that lower the surface tension between the liquid and the gas, allowing them to mix more easily. Foaming agents are commonly used in a variety of applications such as cleaning products, shampoos, detergents, and firefighting equipment.