How to treat/heal extremely dry, hard, chapped, peeling lips?

I have extremely dry, hard, chapped, peeling lips recently, but I've always had chapped lips that would just peel away after a couple of days in the shower since I was around 13 years old. I've tried, vaseline, oil, neutrogena lip care, every lip balm available, blistex, burts bees wax and even hand lotion. I've been drinking around 6 glasses of water every day for several months now and still no improvement. After showering I usually scrape my lips with my finger and skin would easily peel away. It's great for only a couple of hours, then soon my lips become dry and chapped. Right now I have a cut (caused by smiling) on my lip because they are so hard and dry. I will be making an appointment with my doctor to see if there is anything regarding my health that is causing this. But in the meantime, anyone have any suggestions to help retrieve normal lips I once had? Thank you!