Wash by hand at maximum 25°degrees. Limit the detergents you use. Use powder and stay away from liquid detergent. If you insist on using a scale, 10gr detergent for every kg of laundry will do the job. One scarf weighs about 300gr. Never use softener! Dry your cardigan or stole flat, on a drying rack and preferably in the shade or inside. Steam your cardigan or stole if you think it's too wrinkled. In case you hesitate, contact me.