Alright. I will try the eco earth. I also have mine at 70% humidity when he's in the blue, but we're still having this issue.
I ended up taking him out to soak since he looked really awful and just rolling his skin back and shedding for him. He seemed relieved. His skin was really dry feeling underneath (the side facing his body), as if he didn't produce the oils they use to get the skin off. It was really rough too. I'm not sure if this is how it is supposed to feel or not, when my king shed in my hand the one time it was really soft. I'm not sure if python skin is different than colubrid when it sheds.