I dont know for how long you tried it, but my derm too gave me this cream to try it and i applied it for more than a week atleast 4 or 5 times a day and the result looked the white lines inside the lips looked more white and embaressing and more hanging of the peeling crusts. it suppose to help for very dried skin, unfortunately, in my case it didnt do no good but anyways, the derm told me to apply it 10 times a day and the more i applied it the more hanging of the crusts and reveals the raw skin but on your case, you might have severely dried skin of the lips and not ec, but please tell me how long did it take you to see result because i only tried it a little more than a wk and i thought it just makes worse according to the result i was seeing, thanks.