Soaps are sodium or potassium fatty acids salts, produced from the hydrolysis of fats ihttp://www.yasesteesoaps.com/body-butter/n a chemical reaction called saponification. Each soap molecule has a long hydrocarbon chain, sometimes called its 'tail', with a carboxylate 'head'. In water, the sodium or potassium ions float free, leaving a negatively-charged head.
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