122453, I hope your experiment works and your lips get better! :)
Me, I'm in my late 20s and have been to four different doctors now. Three of them prescribed me different steroid creams. So currently I'm on my third round of the stuff. The fourth doctor prescribed me a bunch of herbal medicines to drink, which I'm also still taking. Other things I've tried include aquafor, olive oil, vit E oil, licking!, cerelip, vacationing in a humid country, staying away from toothpaste, etc. Nothing has worked so far. My doctor also recommended a lip biopsy, which I'm hesitant to get since it seems no one on this forum has had much luck on that front. I've gotten tested for vitamin deficiencies, blood count, mercury poisoning, and some immune system tests. Everything came back normal except the immune system stuff which I'll be following up on when I get back to the US.