What should you do when you spill or stain your duvet? Give it a good wash with The Laundress! If the duvet is a cotton or cotton blend, tackle the stain with the Stain Solution from The Laundress. Wet the stained area and apply the Stain Solution directly to the fabric. Let this item soak between 30-60 minutes and put them in the washing machine. Be sure to turn the duvet cover inside out before washing in cold water. You might try the Signature Detergent from The Laundress. For the down comforter, we suggest the Wool & Cashmere Shampoo from The Laundress; this is specifically formulated to sustain the life of delicate down feathers. You can let it air dry. Once dry, add to the dryer. For best results, we include 2-3 tennis balls or dryer balls in the machine to fluff up the down.