WTF Fun Fact – Soap Toothpaste

From the 1850’s until 1945, toothpaste contained soap. After that time, soap was replaced by other ingredients to make the paste smoother – such as sodium lauryl sulphate, a common ingredient in present-day toothpaste. – WTF Fun Facts

Source: History Of Toothbrushes And Toothpastes (colgate.com)

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