The number one thing to do when learning how to get sweat stains out of hats is to check to see if your hat has a care label. If so, follow any instructions. If the hat doesn't say Dry Clean Only ...

NoSweat has created the first disposable performance liners for hats, helmets, hard hats and visors that absorb sweat instantly while preventing odors, stains and even acne. NoSweat thin liners peel ...