One bottle can color one pound of dried polyester fabric. For the full dyeing process, you must use this dye in a stainless steel pot on your stovetop to keep the water at a high temperature. Not suitable for use in a washing machine. Acrylic, nylon, and polyester synthetic fiber dye adaptable and non-toxic 7 fl oz / 207 ml is the net weight. To learn more, go to www.ritdye.com. Weigh the object to be dyed on a food scale or estimate its weight to find out how much dye is required. Generally speaking, two pounds of dry fabric can be dyed with one bottle of Rit DyeMore. Doubling the amount of dye will yield a much bolder color if you're dyeing 100% polyester. Weight and fiber content have an impact on color appearance. If you