The freezer won't shrink your jeans; it won't bring your jeans back into shape. A trick for that is to turn them inside out and throw them in the dryer without washing them.If you are wearing stretched jeans, that will kind of bring them back into shape.he freezer won't shrink your jeans; it won't bring your jeans back into shape. A trick for that is to turn them inside out and throw them in the dryer without washing them.