I have tried EVERY balm you can think of and then some. Even the medicated blistex stuff that went AWOL for a bit doesn't work for me.
But I have finally found what works. Lip oil on at night (currently using Aldi cheapy), let it "soak in" for a minute or two then an occlusive layer (currently Dr PawPaw as that's what I have to hand but have also used vaseline!)
When I wake up all those annoying little dry flakes are gone. Cracks are gone, lips aren't as dry! I'm so relieved I could cry!
It's not just the lip oil or the occlusive layer as neither of those have worked for me when used by themselves. The combination of both overnight and then an ordinary lip balm during the day seems to have been the holy grail combination. It's fixed me in 3 days.
Anyhow I know it's a boring thread topic but thought I'd share in case it helps anyone else.