How do detergents and soaps work? - Explain that Stuff
Oct 31, 2020·1790: Soap remains an expensive luxury until French chemist Nicolas Leblanc (1742–1806) finds a cheaper way of making it using salt. 1800s: Soap-making becomes popular in the United States and North America, where people mix the ingredients in large "soap kettles". Soap kettles are used for most soap-making until World War II.