I use CVS brand baby wipes for sensitive skin, they have no alcohol or aloe in them. They cost about $3.00 for 72. I use a whole one every night before my put my mask on, first I clean the nasal pillows mask and then I clean my face, esp upper lip and slightly into nostrils where the pillows rest, just to be sure I have gotten any saline or Lansinoh I may have used out of the way. Wait a few minutes to dry it, then put on mask. BTW, I have nasal allergies to pollen, dust, etc and usually have to use nasal spray or Neti pot before application of mask, so cleaning with wipe into the beginning of both nostrils gets any of that solution still hanging around.