Your item is soaked in soda ash to preserve color and vibrancy. Before it is dyed, it is washed in synthrapol to remove any dirt or fabric softener so the dye sticks. After it is dyed, it is rinsed in cold then hot water. It is then washed on hot in synthrapol, a professional grade textile detergent that locks in color. You can wash in any temperature and dye will not bleed, but should wash with like colors. Cold wash will preserve dye longer. You can also dry, but item may shrink.