If its just a little on the tail you can usually just handle the snake and let it crawl through your hands while gently gripping the tail before the skin. It should just rub off easily. I would just put a humid hide in the enclosure. Damp peat moss or aspen mulch in a container with a hole cut in it. Most BPs will spend most of their time in a humid hide if they are given one when they go into shed.