I have used vioform-hydrocortisone which contains hydrocortisone 1% and my lips improved a lot while i was using it.
I believe this is a good way to tell if we have the same thing. For some people here, hydrocortisone aparently didnt make any difference. They must have something different than us, so we should be carefull not to avoid trying something just because it didnt work for them.
Anyway, i have said that this problem is not confined to the lips. The peeling area extends into the mouth, so a cream that is only applied in the outer part will not do the job. Maybe oral steroids would work better, but i have not tried them.