Soap is the oldest cleaning supply. There are two kinds of soap types; soft and hard. Also, there are many usages of soap which is never known. If you think that soap is only used for cleaning, then you must watch the video below to find out more details. For example, soap is used as a fog repellant. If you rub your glasses or mirrors with s hard soap, you will not have fog anymore. We all have the problem of fog after showers. Especially, if you use glasses like myself, then you must know what I am talking about.