For other uses, see JFK (disambiguation). John Fitzgerald Kennedy (May 29, 1917 â November 22, 1963), also referred to as John F. Kennedy, JFK, John Kennedy or Jack Kennedy, was the 35th President of the United States. He served from 1961 until his assassination in 1963.
...but also (technically) no, because all bar soap must be made with lye. It is necessary for the integral chemical process that changes fat into soap. I won't get into the details of that reaction because that is not what you are asking, but suffice it to say that lye is a required ingredient when making solid soap.
Lye is an alkaline solution that's used for cleaning. If you were a maid about 200 years ago, you probably cleaned the chamber pots with lye. Lye is an old cleaning product and an old word too. It comes from the Old English lÃ©ag, which is related to the root for wash in our word lather. Lye is still used to make soap, but you probably won't come across the word except in old novels.