The purpose of the CPAP mask is to pump air into your airways with a slight pressure throughout the night. This keeps the airways clear and there are no breathing pauses. The mask itself takes some getting used to for many people. That is why many patients are looking for a sensible replacement. However, the airways can also be kept clear by using Biow, as many customers with sleep apnea confirm. However, this ideal scenario does not apply to everyone without exception. That's why you can try our ionizer for free for 30 days.