I wash all the black and purple marabou I buy. To remove the excess dye, wet the marabou so it is soaked and wash it with your hands with liquid soap like Dawn and warm water. Rinse it well and watch the dye bleed off. Blot it hard with paper towels. Just lay it out on paper towels and 3 times a day or so pick it up and fluff it. It will be fine,

Just wet it, wash it, rinse well and blot, let dry.

Bob