Remove hair, dirt and dried sweat with a stiff brush
Machine wash at 30° on a cool/wool cycle or hand wash
Use Lemieux Wool Wash (available from LeMieux)
Straighten/flatten cotton fabric after washing
Air dry near heat source. Never tumble dry
Avoid using strong fabric conditioners
Warning: In rare cases dye from black wool items may leach from wool items giving a slight blue tint. Staining of grey coats can occur.