Rit DyeMore Advanced Liquid Dye for Polyester, Acrylic, Acetate, Nylon and More 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 Rits website, it is almost certain youll find the right color for your needs Get creative and create something unique with an easy dye technique, like an ombr, 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