how to wash a baseball cap

Whether you wear baseball caps to support your favorite team, for work, or for play- there’s a high chance it’s time for a cleaning. Many newer caps can be thrown in the washing machine or dishwasher, but making sure it stays in its original shape can require extra care. Before you start, check your cap’s tag to see its fiber content and any manufacturer’s cleaning instructions. If your cap doesn’t have a tag or it has faded, you can still follow this guide to learn how to wash your baseball caps and make them look and feel as good as new.

Washing Newer Baseball Caps

clean hat

Most new caps that are made out of polyester or cotton can simply be thrown in the washing machine or dishwasher, but if you want to be extra cautious about keeping the shape and feel of your hat, follow these steps:

1. Plug and fill your sink with cold water. You can also fill a large plastic container like tupperware with cold water if others in your house need to use the sink.

2. Then, add one cap-full of laundry detergent (you can use liquid or powdered) without bleach to the water. If you’re washing a wool cap, make sure to use detergent specially made for wool.

3. If you have any tough stains or spots of dirt, spray laundry pre-treatment or stain remover on the area of your cap before washing. 

4. Now, place your cap in the soapy water and use a clean cloth to help scrub the dirt away. Be gentle and don’t twist the fibers when washing. If you want more control to make sure the hat’s logo or design isn’t affected by scrubbing, use an old toothbrush to delicately clean spots.

using toothbrush to clean hat

5. Drain your sink/empty your container of soapy water and rinse your hat in cold water until the water coming off of the cap is clear.

6. Gently roll your baseball cap in a thick towel to absorb most of the moisture. Try to have your hat air dry on a hat-shaped object. Sometimes coffee cans, blown up balloons, or upside down bowls can help the hat dry in shape. Placing it in front of a fan can speed up the drying process. If you dry your wool cap on your own head, it might feel uncomfortable but will dry to the exact shape of your head, making it a perfect fit.

*If your cap has a sweat line on the brim, soak the line in a think layer of dish soap overnight before washing your cap.

Washing Older Baseball Caps

old hat

Since many old caps don’t have tags with cleaning instructions (baseball caps didn’t get tags until 1983), you have to treat them with special care.

1. Do a color test: Dampen a white cloth with cold water and a small amount of mild detergent or dish soap. Rub an inconspicuous area of the cap and if there is color transfer, do not continue with the washing.

2. If there is no color transfer, rub the entire hat with the soapy cloth. Do not immerse your cap in water because the bill could be shaped using cardboard that will dissolve when wet.

3. Rinse your soapy cloth in clean, cold water and then wipe down your cap with the damp cloth to remove the soap residue.

4. Air-dry your cap over a head-shaped container or object. 

drying baseball cap

Remember: commemorative or collective hats should always be stored in a covered case to prevent dust and grease from affecting them. Store them out of direct sunlight and intense heat so they will only need a light dusting or brushing for cleaning.  

If your cap has an autograph that you want to preserve, keep it in a cool, dark place to preventing mold or mildew from forming from the ink. If you want to wear the autographed cap but don’t want the signature to fade, cover the signed area with a white, pressing cloth and iron the area on high heat to help set the ink.

If you follow these easy steps to clean your new or old baseball caps, they should be looking clean and fresh in no time! Check the Wireless Wipes Blog daily for new posts on cleaning tips, DIY hacks, how-tos, and more! 




Sources:, wikihow,

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