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What is the purpose of soap during the early times ?
Soap was used in cleaning wool and cotton used in textile manufacture and was used medicinally for at least 5000 years. The Ebers papyrus (Egypt, 1550 BC) reveals that the ancient Egyptians mixed animal and vegetable oils with alkaline salts to produce a soap-like substance.
Commercial soap, as we know it today, came into existence during WWI. After the Great War and until 1930's, a method called batch kettle boiling was used for soap production. Shortly thereafter, continuous process that decreased soap making production time to less than a day was introduced and refined by Procter & Gamble. Continuous process is still used by large commercial soap manufacturers.
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