How do you make soap (not lye soap of the olden days, but modern soap, like Ivory)?
The word soap, by definition, refers to saponified fats. In other words, any true soap is essentially the same as the old-fashioned lye soap, just with the ratio of ingredients carefully measured to control pH. Many products that we use today as “soap” are not actually soap at all, but a mixture of other detergents (examples include Dove bars and liquid soaps). The synthetic processes used to produce these alternative detergents are too complicated for me to discuss here.
