My lips won't stop pealing...

For as long as I can remember, my lips would peel. It's not exfoliating chilitis or whatever, not NEARLY that bad. It's not noticeable, I can only feel my lips flaking. I drink 1 gallon of water every day, don't get much sun if any. I used to peel my lips with my teeth but now I don't anymore.

Tried exfoliating with a toothbrush, Blistex lip medex, Vasalene, Aquaphor. These products will make my lips moisturized for about 30 mins, but that's about it... then my lips flake off.

What else can I do?