My snakes shed fine with their humidity at about 55%. I used to bump mine up to around 70% until I started missing some of their shed signs and they still shed perfectly at their regular 55% humidity.

If you feel better raising it though, that's good too! I always use long fiber sphagnum moss. It is really nice stuff and smells soooooo good!!!! You can make your snake a little nest of it in each of the hides, or simply just put some in each of the hides. Great stuff