I struggle with dryness and nosebleeds, too. If you're on oxygen, do you use the little bubbler/water tank that comes with it? That could help, as can a humidifier in the room you spend the most time in. Great to hear that Vaseline does the trick for you. Just make sure that you're not using Vaseline or other petroleum-based products with oxygen -- that's not safe. -Melissa, copd team