jacquard ipoly fabric dye 14g-blue jacquard idye poly is virtually the only dye that will color polyester. in fact, it will color almost anything synthetic, including plastics and nylons, buttons, frisbee discs, worbla & thibra, 3d printed objects, toys, dolls, wigs, cleats, urethane coatings and more. the dye comes in a dissolvable packet, so there are never any messy powders to handle: simply drop the packet in a pot of water, add the fabric or objects and bring to a simmer.