Sweat stains are no sweat for these grime-fighting products and hat-saving tools, all approved by laundry professionals.

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And if you havent, more than likely, you just didnt know what to look for.

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(Typically, the lighter the hat, the thicker the sweat line will appear.)

Why does sweat cause stains?

Be it in a baseball cap or on your favorite white T-shirt, sweat causes stains… but why?

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chief innovation officer at Ecos

According toEcosChief Innovation OfficerJenna Arkin, sweat contains salts, urea, minerals, and ammonia.

Even though an antiperspirant can help (yep, even on your forehead), its not foolproof.

But whatever you do, dont haphazardly toss them in the washing machine.

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(Dont worry about this damaging your dishwasher, its in most dishwasher detergents).

I find the hats stay fine just placed on the rack, though, he admits.

Be sure to set the washing machine to low spin speed to help prevent damage to the hats structure.

vera bradley at qvc

This is particularly beneficial if your hat simply wont relinquish the stains.

Make a thick paste with one large scoop of Oxo-Brite and enough water to create a toothpaste-like consistency.

Using a clean toothbrush, brush this mixture over the stain and scrub to release the set-in stain.

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chief innovation officer at Ecos

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