Bandit's Dry Ears (UPDATE)

So, as some of you may have seen, one of my chins has a case of extremely dry ears. I've continued the normal schedule, dust baths Wed. and Sun. with balm a day after each dust bath. But, yesterday and today it seems to have worsened. The dry skin now has a cracked pattern throughout both of the outside of his ears, and the raw skin has spread. Whenever I touch the raw skin, he doesn't flinch or give any signs of sudden pain. It's not bright red, just skin pink. The cracked skin does rub off...

Bandit's Dry Ears (UPDATE)