Basically, there are three types of cleaning medium in the market; bar soaps, liquid soaps, and foam soaps. Bar soaps started to become outdated when liquid soaps were first introduced. Especially in public places, as many people use the same bar soap, it can be subject to some questions by means of hygiene. Secondly, the tray, which the soap is put in, should be kept dry to prevent unnecessary melting, which is almost impossible.
So, liquid soaps were a good alternative. It can be stored in a closed box or container and thanks to a pump, people can use without touching the soap inside. Furthermore, as it does not interact with water and due to its chemical state, it does not melt like bar ones.