I use razor sleeves, you can get them at SRD and they are not very expensive. I live in MD near the ocean and if I am not going to use my razor for say a week or more, I put a fine coat of razor oil on the metal and then into the sleeve. The sleeve also serves as very good protection should the razor fall and it will keep it from opening. No problems. You have more exposure in a poorly ventilated bathroom then the ocean.