My problem is the soreness that develops in my upper lip just in front of my front teeth. It feels like there is broken glass in my lip. I clean my mask with a cleaning kit weekly and use the disinfectant spray every night. A new mask makes the symptoms go away after one night. About a week later they are back. I have been tested for herpes and my dentist says he can see the irritation. Sometimes it looks like a little row of white bumps. I use Fluconazole Ointment before putting on my mask and that helps a little. I have tried vaseline but that doesn't work as well as the ointment. When the outbreak occurs, Desonide cream will help clear it up. I used a Resmed S9 with a Liberty Full Face Mask. I change cushions every two weeks only because Montgomery Medical sends 6 cushions with every order.