Idye Poly Black
  • Can this dye be used on cotton if you dont have the regular Idye?
  • No, don't do that! You'll get poor results if you use a dye intended for a different type of fiber. Use the polyester dye on synthetic fibers and the regular iDye on cotton.

    For better, longer-lasting results on cotton, use Procion MX dyes instead of iDye.