What is soap? ...
Answers: Soap is a surfactant used in conjunction beside water for wash and cleaning that historically comes in solid bar but also in the form of a gelatinous liquid.
Historically, soap have been composed of sodium (soda ash) or potassium (potash) salt of fatty acids derived by reacting butter with lye within a process known as saponification. The fat are hydrolyzed by the base, granting glycerol and crude soap.
Many cleaning agents today are technically not soaps, but detergents, which are less expensive and easier to produce.
some thing you bath with.