Dye synthetic fabric and fabric blends, which include anything with 35% or more polyester, acrylic, acetate or nylon. Perfect for rejuvenating faded clothing, upcycling, hiding laundry accidents and so much more | With 250+ color recipes available on Rit’s website, it is almost certain you’ll find the right color for your needs | Get creative and create something unique with an easy dye technique, like an ombré, dip dyed, shibori or tie-dye pattern | Due to the complexity of dyeing synthetic fabrics, you must use this dye in a stainless steel pot on your stove top to maintain a high water temperature throughout the duration of dyeing. Cannot be used in a washing machine | If dyeing fabric with less than 35% synthetic fabric (i. e. polyester, acrylic or acetate), use Rit All-Purpose Dye instead