Rinse the hat in warm water ... isn’t the first thing you’d think of when figuring out how to remove sweat stains, but you can tenderize away hard-to-remove stains. Before you wash that ...

2. Sweat stains White t-shirts and shirts are notorious for showing sweat stains particularly on the armpits. To remove sweat stains, you will need either white vinegar, dish detergent or baking soda.