Board Thread:Questions and Answers/@comment-63043-20130520180857/@comment-7823447-20140401223529

originally he just wore a mask, but during a battle with cap, cap took off Skull's mask, and later on the red death dust was sent to his face it made the skin on his face shrivel up and tighten to his skull and it also made his skin red, therefore he no longer needs his mask. but his yellow eyes, he just wears contacts, so the dust didnt do anything to his eyes.