How Do I Wash My Cap If It Is Sweaty?

Caps keep our heads and eyes shaded from the sun as well as helping us show our team spirit. If you've worn your favorite cap so many times you've lost count, the result can be sweaty, smelly, and dirty looking. The combination of dead skin swells, sweat and its accompanying odor-causing bacteria must be removed with regular washing to keep your cap clean and maintain good hygiene.

Keep your baseball cap in tip-top shape with proper washing.
  1. Place your sweat-stained cap on a clean towel. Moisten a clean sponge with undiluted vinegar. Sponge the sweat stains with the vinegar to loosen and lift the stains. Rinse the sponge with water before applying more vinegar and continuing to sponge the cap for a few minutes longer.
  2. Soaking the cap helps loosen sweat stains.
  3. Prepare a solution made with enzyme stain remover and water in a bucket. Use the ratio of stain remover to water suggested on the packaging. Soak your cap in the solution for a minimum of 30 minutes or as long as overnight for severe sweat stains. The enzymes break down proteins in the sweat, making it easier to remove the stains.
  4. Remove your cap from the enzyme solution. Place the cap on the top shelf of the dishwasher; do not put any dishes in the dishwasher along with the cap. Add dishwasher detergent as normal and fill the rinse agent reservoir with white vinegar to freshen and deodorize the cap.
  5. Use the dishwasher to clean a baseball cap while maintaining its shape.
  6. Run the dishwasher on a regular cycle. Remove the cap from the dishwasher and lay it on a clean towel, out of direct sunlight. If necessary, place a softball under the cap to help hold its shape while it dries. Allow the cap to air dry completely.

Things You Will Need

  • Towels
  • Sponge
  • White vinegar
  • Bucket
  • Enzyme stain remover
  • Dishwasher detergent
  • Softball (optional)


  • Wash canvas sneakers in the dishwasher, too.
  • Treat an extremely dirty and sweaty baseball cap by soaking it in undiluted vinegar for 30 minutes before moving onto the enzyme solution.


  • Avoid washing the cap in the wash machine or drying it in the dryer. Both can result in a misshapen and shrunken cap.

About the Author

Mary Ylisela is a former teacher with a Bachelor of Arts in elementary education and mathematics. She has been a writer since 1996, specializing in business, fitness and education. Prior to teaching, Ylisela worked as a certified fitness instructor and a small-business owner.

Photo Credits

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