It gets easier and easier every day. The first week is the most serious as far as detox goes.
You will experience food cravings throughout the whole fast as the body cleans house deeper and deeper. I had such cravings for pizza the other day I just about went insane. So I went and did some push ups and that took my mind off it.
Just keep yourself busy and don't give your mind a lot of idle time and things will pass quickly.
That mask sounds like fun, I will have to pick up some more bentonite and give it a try. Try adding a little blended organic cucumber with it next time, that stuff is awesome for the skin.