Apply diluted vinegar directly on the stain.

How to stop sweat stains on hats. The liner absorbs the sweat and helps prevent stains. Then, put in a couple of drops of laundry detergent or a tablespoon of a stain removal powder. They can be worn over sweatbands to reduce the contact.

After brushing the hat with a brush, apply some powdered or liquid dishwashing soap. Be sure to clean up all the baking soda. Wipe away sweat stains with a cloth like a microfiber cloth, damped with water and a little dish soap.

Washing a golf hat with the dishwasher is another popular way to remove sweat stains from golf hats and caps. Rub it on the stain and let it sit. Try not to use a detergent with bleach or a bleach.

How to prevent sweat stains in hats? Make a baking soda paste. Fill a sink or bucket with cool or warm water.

Give the hat time to soak, as many as 4 hours may be needed. Wait at least an hour to let the powder soak up the sweat stain. Wipe away the powder with a clean cloth to see if the stain has been absorbed.

Test clean a small area underneath the brim. Finally, rinse off your hat with cool water. Dishwasher and hat washer cage.