A bar of handmade soap.

Soap is a substance used for cleaning and washing objects or people. It is solubile in water, but also dissolves and loosens grease or oil molecules that are stuck to a surface, which is the reason for its cleaning powers.

Soap comes in solid and liquid form, in practically any color and often perfumed. Soap and water forms a foam called lather. Shampoo is a substance similar to soap used for washing one's hair.

Soap is not toxic, but has an unpleasant taste. This is one of the reasons why mouthsoaping is used as a punishment. Soap also irritates the eye and is very painful if it accidentally gets in your eye, which can easily happen when shampooing.

Warm/hot water combined with soap is used for bathing, showering and sometimes for enemas.

Saddle soap is a type of soap used in leather care to make leather nice and supple.

Soap can also be used to stiffen cord for whip-making.

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