To maintain the quality and lifespan of your goose-down pillow, it's essential to follow care instructions. Many goose-down pillows are machine washable, but always check the label. Use a gentle cycle and mild detergent. After washing, ensure thorough drying to prevent clumping. Regularly fluff your pillow to maintain its loft and shape. Using a protective pillowcase can also help extend its cleanliness and lifespan.