Woolmark's trouser guide directs readers to the sewn-in care label before washing. A Woolmark Machine Washable claim supports an appropriate wool-machine cycle, while a hand-wash-only instruction requires the separate gentle routine described in the reference. The label comes before assumptions based on the trousers' appearance or fiber name.

Find the Sewn-In Care Claim Before Washing Wool Trousers

The guide also discusses refreshing wool suit trousers between washes with light brushing and a steamy bathroom. That can reduce unnecessary laundering, but does not alter the washing permission. When washing is needed, use a suitable mild detergent and follow the recommended drying approach, including protection from direct sunlight.