Thank you for this great tip. I used my Astroglide and woke up without any deep dents in my face. Usually it takes a couple of hours for the marks to disappear. The mask just slid over my face and I had the best AI ever and a very low leak rate. I just knew that Astroglide had more than one use!

I am new to CPAP since mid July and only just received my machine last Thursday. It is a ResMed S8 Elite which I chose as an upgrade because of the ability to show efficiency data. However interpreting this data is another thing. I have kept a record for the last three days, but don't know what is t...