Originally Posted by YYCWoMaN

Another 'fold in half'-er and try to fill the gap with undies or socks... everything I own is underwire, and have never had a problem.

I also fold them in half with straps and backs tucked into the cup in my lingerie drawer ~ so if it's bad for them, I'd never know - I usually get tired of them and toss them before they show damage for the way I fold them.

Washing: regular laundry soap in the regular wash with the rest of underwear or foundation garments, with the hooks done up, and then I hang then to to dry ~ a dryer will wreck spandex/elastane faster than anything.