Word “denim” comes from fabric “serge de Nimes” made in France city of Nimes from where it originates. It has been used in America since the late 18th century, colored blue with indigo dye to make blue “jeans”, a type of cotton pants.
These garment washing techniques were originally developed for denim garments, but are now being used for a wide variety of different garment types. The mills and commission houses involved in garment processing continually search for ways to achieve unique new looks.