And unless your soap contains skin-protecting moisturizers, use a facial cleanser instead of soap.

Mild soaps contain less soap or detergent that can irritate skin.

Most traditional soaps and moisturizers in mainstream stores contain harsh chemicals that irritate and dry the skin.

The soaps contain about 20% sodium.

But most agree that deodorant soap or highly fragranced soap contains strong detergents and should not be used on the face.

Some soaps contain a compound known as glycerol, a compound that is very hygroscopic.

Even if your soap does not contain glycerol, other components of soaps may also be hygroscopic.

Every soap contains surface active agents of one type or another.

Other soaps contain non-ionic, or even both positively and negatively charged functionality, to provide certain cleaning characteristics.

At this stage, the soap still contains too much water, which has to be removed.