The basics Jacquard deColourant is a ready-to-use, non-bleach color remover. Formerly 'Discharge Paste'. The benefits Unlike bleach, deColourant removes colour without jeopardising the integrity of the fibre. The uses Use it to remove areas of color from dyed natural fabrics, including cotton, linen, silk, and wool.  The bottom line deColourant is activated by heat. If you don’t like what you’ve done, just wash it out! Nothing happens until you heat the deColourant print.