What bedding is he on? That might be playing into it.
Are you seeing any actual cuts? If he is, you can use neosporin (just plain neosporin, do not use the kind with painkillers in it). If he's just suffering from dry skin, vitamin e oil can be very helpful, but i'd be very cautious putting it on the bottom of his feet. Don't want him slipping on his wheel. Also, you'll want to see his reaction to anything you put on him before putting it on his feet. Don't want him chewing on his feet because of how the thing smelled.
Are you seeing any actual cuts? If he is, you can use neosporin (just plain neosporin, do not use the kind with painkillers in it). If he's just suffering from dry skin, vitamin e oil can be very helpful, but i'd be very cautious putting it on the bottom of his feet. Don't want him slipping on his wheel. Also, you'll want to see his reaction to anything you put on him before putting it on his feet. Don't want him chewing on his feet because of how the thing smelled.