With your DYLN account you can subscribe for recurring Diffuser delivery at the frequency of your choosing, whether it be every few weeks or months. This way, you have worry-free orders that will arrive just when it's about time to replace your Diffuser. In case you need to skip a delivery don't worry, you can easily manage that in your account as well. The best part is that we'll cover shipping for you! Subscribe for regular Diffuser deliveries here.