Submerge the hats in the water, then.

How to get sweat stains out of hat. Fill a sink or bucket with cool or warm water. Stir to mix in the detergent. Then dip the hat in the soapy solution and allow it to soak for.

Wait at least an hour to let the powder soak up the sweat stain. In a bowl of room temperature water, mix in 1 teaspoon of shampoo or mild dish detergent. 1.1) to remove sweat stains from hats, one option is to use baking soda.

When there are no more visible. Give the hat time to soak, as many as 4 hours may be needed. After removing the hat, rinse it thoroughly under running clean water until the water is clear and there.

White vinegar is also great for spot treatment. Apply diluted vinegar directly on the stain. Rinse until all of the soap is gone, slightly squeezing the hat to get excess moisture out.

Wipe away sweat stains with a cloth like a microfiber cloth, damped with water and a little dish soap. Spray a stain treatment product like shampoo to loosen sweat and grime. Fill a sink with hot water, then add the borax, laundry detergent and washing soda (basically, we’re applying laundry stripping to your hats).

Fill a sink or bucket with cool or warm water. Fill a bowl with the warm water and the vinegar. Try not to use a detergent with bleach or a bleach.