The most important thing to note when you're dealing with a molded cup bra, seamless bra or other type of bra that has pre-formed cups is to never deform the cup.
Storing a pre-formed or molded cup bra: You should store these bras with the cups properly shaped - make sure there are no dents or wrinkles in the cups. You can stack pre-formed bras with the cups nesting - try stuffing the cups with panties or socks so they'll hold their shape.
NEVER invert the cups by folding the bra in half and stacking one cup inside the other! Inverting the cups causes dents, destroys fibers in the molding, and shortens the life of your bra.
Washing your molded cup bra or pre-formed bra style: To wash a molded cup or pre-formed bra, you should only hand wash these bras in the sink. Putting them in the washer causes their cups to deform, and can dramatically shorten their lifespan - even if you put them in a lingerie bag. You want to avoid anything that wrinkles or deforms the cups, so hand wash only.
Drying your molded cup bra or pre-formed bra: Air dry these bras by laying them out on a flat surface. Be careful to make sure the cups are properly shaped and aren't dented or wrinkled.
Taking Care of Your Bras
Washing Your Bras
Storing Your Bras
Caring For Underwire Bras
Caring For Molded Cups