Follow-Up:
I have had a severe problem with chapped lips for about 5 months. Lip balm did nothing at all. An internet search said that a fungus, Candida, could be the problem. I found an extract of neem leaf (alcohol extract) applied several times a day has about cleared it up after about 5 days. It is antifungal and antibacterial. It is available at several places on the web, but I got mine from bytheplanet.com.