I've found that bumping the humidity up to around 56-60 has been better for my snake, dented eyecaps went away, and she feels as soft as butter. I live in the high desert and was finding that keeping it in 50's just wasn't working for her. She still drinks quite frequently but hasn't shown any problems after just bumping it up. I keep damp sphagnum moss in a corner of her tank, and sometimes before she sheds I see her laying in it rather than her water bowl.