I too really need a full face mask, but have been unable to find one that does not burn my face. I have been told by my respiratory therapist " she doesn't understand why I have this problem, since the masks are made of food grade silicone." Well, I don't understnad either, but the problem still exists. I work in the health care profession and have to wear gloves, latex are definately easier to wear thoughout the day as opposed to the non latex available. I mention this only because I have problems with many latex gloves and can only wear certain brands. I have come to learn that I am not allergic to latex, but the chemicals used in the manufacturing of the latex and whether I can wear the gloves depends on how complete the rinsing is done during the manufacturing process. I have to wonder if the same situation exists with the manufacturing of silicon. My knowledge is less in this area. I have found my best relief with the Resmed Mirage Liberty Mask. This one my skin seems to accept. My search for a full face mask still continues and it doesn't help that I am told I have a hard to fit face: narrow nose, receeded chin and believe it or not slippery hair! Just finding a full face mask that does not leak is difficult. Resmed Mirage Quattro gave good relief and fit well, but burned my nose so bad the skin was open for 3 months. I hope you find relief in a mask that does not burn. Maybe the the Mirage Liberty mask would work for you too. I hope so! Good Luck!!