Cashmere garments should ALWAYS be washed by hand ( or professionally dry-cleaned )
Use a special cashmere or a quality shampoo and make sure it is completely dissolved before gently rinsing – you do not need a softener and NEVER use powder.
Turn the garment inside-out and rinse with water warm enough to keep your hands comfortably in it. Gently squeeze the suds through taking care not to rub or wring the garment. Give a final rinse with cold water.