I work in retail, which is somewhat higher end and we sell designer jeans and the like. So, what I heard from my coworkers is that by soaking your dark denim in a bucket of lukewarm water and a cup of salt overnight, you're helping to set the dark dye. And then give them a rinse, of course. Apparently it helps the denim from losing its colour in the wash as well as keeping the dye from rubbing off on things.
I told my mom I was doing this, but she told me not to because apparently salt damages the fabric and makes it wear out faster?
I'm confused! Has anyone heard anything about salt ruining fabric?