Wrinkle-resistant clothing sounds like a time-saving wonder fabric. When you launder something like a cotton dress shirt at home, it often comes out of the dryer wrinkled and needing to be pressed. This can be time-consuming, but resist the temptation to buy wrinkle-resistant shirts. A toxic chemical called formaldehyde is used in the resin that coats this fabric. Instead, try washing clothing and letting shirts and pants air dry to minimize wrinkles. Or, if you must buy no-iron clothing, wash them at least twice before wearing them to remove the high levels of chemicals on freshly treated clothing and to help minimize skin irritation when you wear them.