Since this is a high quality product, we suggest taking your comforter to a cleaning professional who will follow the maintenance instructions on the label: Dry cleaning.
Hand washing in cold water is only recommended for removing occasional water-based stains, such as coffee, tea, fruit juice, etc. and must be done carefully. If you use your silk comforter as a bedspread and it needs to be ironed, lightly use a steam iron (average temperature: 110° to 150°).
Bamboo comforters, pillows and mattress toppers
Machine wash at 40° or dry cleaning by a professional. Do not use the dryer.
Remember to aerate them regularly. Hand wash at 30° or 40°
Silk satin sheets, pillow cases and duvet covers
Use a detergent suited to the fabric and that contains no enzymes. Iron the backing when lightly damp and finish with light ironing where needed.
Lastly, remember to regularly aerate your comforter and other linens.