Le Blanc® Downwash® is the perfect detergent to protect the naturally oiled feathers in down-filled products from drying out, preserving their loft and fill. Downwash® may be used on all washable down-filled articles covered in silk, all cottons, TENCEL®, polyester, organics, and blends. Safely launder down-filled pillows, comforters, duvets, quilts, jackets, and clothing.