Eric Keller has been producing soap from the fat of their pigs for practically nothing for two years. He shares the process ...

As a chemical compound, a soap molecule has a water-loving head and a grease- and oil-loving carbon chain tail that surrounds and lifts up dirt molecules, Konkol explained. This basic formula was ...

Sodium stearate (a white solid) is the most common type of soap. Each molecule consists of a long non-polar covalent hydrocarbon ‘tail’ and a polar, ionic ‘head’ where the charge is.