Detergent

The Simple English Wiktionary has a definition for: detergent.

A detergent is a chemical that people use in washing things. Many people use washing powder, which is a type of detergent, when they need to clean their clothes. It is also used to clean glasses and other items. Detergent is mostly used in washing machines, to clean dirty clothes. People usually use liquid detergent to wash clothes, but powdered detergent is usable too.