When you don’t have extra fabric to absorb moisture around your crotch, you end up with nasty sweat stains, says M. Jay Singleton, a men’s style consultant and founder of Urban Squire Club.
These stains are more visible on lighter fabrics and colors, like khakis, he says.
As with chafing or jock itch prevention, you’ll want to sprinkle a dash of baby powder on your privates. This will absorb moisture so stains won’t form.
If you do see a stain, rub a teaspoon of dish detergent mixed with two teaspoons of hydrogen peroxide into the stained area and let it sit for 30 minutes.
“Then wash the garment as you normally do in cool water with your regular detergent,” Burrows says.