Harsh detergents can damage goose-down insulation by stripping it of its natural oils. Granger's Down Wash is specifically formulated for use with all down and synthetic filled clothing and equipment. The cleaner helps maximize breathability, restore loft and eliminates odors giving your products a new lease on life. Granger's has always been at the forefront of developing the most environmentally responsible products. Granger's was the first company to develop water-based after-care products and were the first after-care company to be a bluesign® system partner.