Love them but need more forehead liners
First, let me say that I would never be able to be compliant with my CPAP without these liners--I love them and am very thankful for this product. The only thing is, I would love for there to be more forehead sheets in the box, my forehead gets very greasy overnight (even with a good skin regiment), so I find myself reusing them long past when I should be or going nights without. But hey, most folks probably don't share the same problem as me.
Take it from an Internal Medicine physician (retired now; but what I used to tell my patients) using liners for a full face mask x 8 years: 1): acts like a gasket to prevent leaks: every interface needs a gasket (think plumbing, car engine...); every fitting has a gasket. Gaskets prevent leaks. Same thing with the mask. 2. Slumber: when winding down to go to sleep, nothing wakes one up quicker than putting cold plastic/rubber on one's face and "suddenly, I"m awake". Startled. The liner is like having a high-thread-count pillow case on the mask making it warm and comfy; just like first laying down your head swaddled into a comfy pillow. Love them.