I use chap stick medicated. When my lips are especially chapped I can feel it working to heal them.

Things that help a bit...Apply many times a day, wear overnight, avoid licking lips.

Have you tried blistex lip ointment? Every winter my lips get very chapped because I lick them more often. And I find that blistex always works for me.

I had this problem for years and it was so frustrating. Then one day, when I was traveling in India, a German woman turned to me and pointed at my lips and said, "You need vitamin B supplements"

I started taking them and within a week had results. If I missed them for 3 days, the lips would return a week later for a few days. I did that for 6 months and now I only take the supplements here and there and don't have any problems. Might have to do with diet as well, since I eat more Vit B-rich foods now.

But if it's painful, start with B Complex supplements till you're regular again.