Fluorescent whitening agents in detergents.

Washing is a form of textile care which is characterized by its repetitive nature. Washing methods vary enormously in different parts of the world. The main types of detergents and fluorescent whitening agents (FWAs) are described. Washing slows down the deterioration in use of white goods, and yellowing is counteracted by FWAs. FWAs also enhance the freshness and brightness of most pale shades. Cost calculations show clearly the economic advantages of using FWAs in washing: the useful life of textiles can be prolonged considerably for a very small additional cost.