Archroma has pioneered the  concept of using natural wastes and byproducts to synthesise dyes to colour textiles. Bryan Dill from Archroma US, Inc, presented the “Earthcolors” technology at the recent international conference of the American Association of Textile Chemists and Colorists in Wilmington, NC.  Archroma has synthesised sulfur dyes from natural wastes such as almond shells, cotton giwastes, plant byproducts and shoots of rosemary, etc. This technology originally came out of Archroma’s unit in Spain.