I had the same problem, however, it was until recently I have seen my BP drink water. You do not look at him 24/7, so he may be drinking when you are not looking. As for the wrinkles, it may be upcoming shed, or just his skin bending, like yours when you bend your finger, it does not stay straight. Good luck with you BP.

P.S.: Look in this thread, hopefully you will find your answer. http://ball-pythons.net/forums/showt...ht=metalsmoker