How do you clean the brim of a flat brim hat?

To clean the brim of a flat brim hat, start by using a soft brush or cloth to remove any dust and dirt. For tougher stains, lightly dampen a cloth with a mixture of mild detergent and water, then gently scrub the brim. Avoid soaking the hat; instead, focus on spot cleaning. Finally, reshape the brim and let the hat air dry away from direct sunlight to prevent any distortion.