To get rid of the problems like drying out of your nose, it is better to pick a mask that fits your face shape properly. A CPAP device with a heated humidifier that gets attached to the air pressure machine can help you in various ways to keep your passages moisturized. Also, it is very easy to adjust the level for the humidification, which lets you have a comfortable therapy session during the time of sleeping. You can also consider using nasal saline spray before sleeping to keep your nose away from stuffing and drying.