I heard or read somewhere that covering the hot towel on your face with a dry towel will help to keep the heat in. Anyone tried this? I'm curious about this method because I have a huge very dense towel, which won't be useful as a hot towel (it takes ages to get it completely wet, and once it's wet, it's too much work to stretch it to get rid off the excess water, specially if I have to do this more than once) and I'm thinking of using it dry to cover a hot wet thinner towel.