The continuous positive airway pressure (CPAP) machine is one of the best treatments for sleep apnea. But, for appropriately using the air pressure machine so it would improve your condition, you will need to find an appropriate mask. A suitable mask will make using the CPAP device much more comfortable. If it is correctly sealed to your face, the chances of air leakage, ulcers, pain, and marks on the face will reduce. So, to help you find a face mask that is suitable for you, we have explained the difference between a nasal mask, nasal pillow, and full-face CPAP mask.