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Toilet soap is a mild soap, often enhanced with perfumes and colors, and preserved to increase its shelf life. The fundamental process of soapmaking, known as saponification, involves reacting natural fats or oils with a hot caustic alkali solution, such as sodium hydroxide. This reaction produces soap, which is a sodium fatty acid salt, and glycerin.12345

Historically, soap has been known for over 2,300 years, with evidence of its use by the Phoenicians around 600 BCE. The word "soap" itself is derived from the Celtic term "saipo". While initially used medicinally, its importance for washing and cleaning was recognized later, around the 2nd century CE. The consumption of soap has been historically linked to a nation's wealth and civilization.6

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