We're well into the Boston Red Sox Games season and your favorite player's cap may be looking a bit dingy. While most components of the baseball uniform, such as shirts, pants, and socks, are machine washable, what about baseball caps? The preferred method of care is to simply hand wash the cap with a mild dish detergent, rinse, and air dry.
Machine washing on a gentle cycle may be another option; however, this tends to be rough on the brim of the hat and can bend, distort, or even tear from the agitation of the machine. The plastic, adjustable hooks on the back of the hat may also pose a problem, as they tend to melt at higher drying temperatures.
A plastic cap form that fits in and around the cap to hold its shape is also available. The form allows you to wash the cap in an ordinary dishwasher, which keeps the brim from getting bent or distorted during the wash cycle. Be sure to choose a dishwashing detergent that does not contain chlorine bleach.
Before attempting to clean any cap, test for colorfastness by applying a small amount of detergent and water to an inconspicuous area and blot the area with a white cloth. If any traces of dye appear on the cloth, it may not be safe to clean the cap.