When I went to my dermatologist a long time ago, when he thought my dry, peeling lips might be from allergic reaction, he prescribed some pills called prednisone to take for 2 weeks and when I was taking it, it seemed like it was helping a little, my lips did not peel as easily but I could only take it for 2 weeks because it is not supposed to be a long time medication. Then I went back and told my derm and he told me to take a patch test to test for allergies but my patch test all came out negative so he does not think it is allergies but I still am not sure if it is allergic reaction or not... i don't think the patch test was accurate since they put it on my back, not my lips... my dermatologist didn't know what else to do