Hair, dust and lint stand out on black hats, so they need to be cleaned well, especially after constant wear. Removing the surface debris can help the hat look cleaner, but it may need a more thorough cleaning. Some hats can be put into the washing machine. Check the care tag to find out whether your hat can. For hats that need to be hand-washed, use laundry soap and a washcloth. A little elbow grease can clean a hat by hand just as well as a washing machine.
Roll the lint roller over the hat to remove dust, lint and hair. Use it on the inside and outside of the hat.
Pour a dime-sized drop of laundry soap into a bowl. Add warm water. Mix together with a washcloth.
Wipe down the hat with the wet washcloth. Scrub out stains.
Rinse out the washcloth. Wet the cloth with plain water.
Wipe down the hat with the wet washcloth to remove the soap. Let the hat air dry.