The care label may read "dry clean only," but hand washing a cashmere sweater will actually make it softer over time. Be sure to use baby shampoo or a mild detergent like Woolite or Essence. Press out the excess water, but do not wring the sweater. Instead, lay it flat on a towel and reshape it as it dries. Fold to store. To avoid a line running down the middle of the sweater, fold each side of the sweater inward by a third. Smooth the arms down, and fold in half. Never hang a cashmere sweater―it will cause shoulder dimples, and the pull of gravity will distort the overall shape.
Tip: Wet cashmere can take days to dry. To cut the time in half, use a large salad spinner to spin off excess water. Use one with a pull cord; they're more effective. Then lay flat to dry.