Will washing a baseball cap in the dishwasher ruin the cardboard or plastic frame in the hat?

i've never washed a baseball cap before and i want to wash my friends'. i don't want to ruin it because it's not mine. i heard of those hat shaper things you can buy before you put it in the dishwasher, but the shape won't work for his hat because he bends the front part into a curve like a semicircle. would wrapping the curve around a mug work or will the dishwasher ruin the frame no matter what?|||i don't think that i would wash it in the dishwasher, i have seen the hat racks that you put the hat in and then wash it in the washing machine, it keeps the shape of the hat, plus you need to watch, if its a wool hat you shouldn't wash those at all.|||ok the dish washer is for dishes. get the hat thing for the washer and wash it. he can bend it back again. just dont put it in the dish washer.|||It will ruin it.|||dishwasher works great for hats! It won't ruin it.|||i wash these guys around here in washer. just don't dry it place it over a jug or something and let it dry