zinc deficiency? please. you cant be serious. anyone who listens to you should think twice. I actually think you should be banned for giving misinformation and nothing helpful. there is 300 pages on this forum and people have been trying vitamin deficiencys for decades with no result, still peeling lips. so just get over yourself. you are not a scientist or doctor and your silly tests to check for vitamin deficiencys is just dumb. and I never said I use anything other than water accept chapstick. but I did say that only water will work. you are supposed to hydrate your lips with water then seal in the moisture with chapstick, do some research scientist. out of the 9 billion people on earth today there is maybe 1000 people who have exfoliative chielitis. don't you think that there would be a lot more people with ec if it was a vitamin deficiency say in poor countrys? scientist. " t suppressor cells blah blah" haha. you are searching for some root cause when you need to do the research and see what everybody has in common and that is they avoid water for years leaving there skin lip skin dry and dehydrated. there is your cause scientist. vitamin a reduces zinc leading to low t suppressor cells hahaha get over yourself. the only cure is water and it is simple, water is the most crucial element to human life. what do you have against me using numbers instead of a username? its the same thing, you hide behind the name longterm, I hide behind some numbers.

I still think you're a troll since you really overreact. This isn't just about vitamin deficiency. It's more of an immune system problem that's due to vitamin deficiency caused by intestinal fat malabsorption problem for me. If you read my posts you would see the Science behind all this. It's not just a vitamin deficiency.

As I thought, there is a relation to zinc helping to better absorb vitamin A.

"Zinc and vitamin A interact in several ways. Zinc is a component of retinol-binding protein, a protein necessary for transporting vitamin A in the blood. Zinc is also required for the enzyme that converts retinol (vitamin A) to retinal. This latter form of vitamin A is necessary for the synthesis of rhodopsin, a protein in the eye that absorbs light and thus is involved in dark adaptation. Zinc deficiency is associated with decreased release of vitamin A from the liver."

"Zinc supports the formation of vesicles involved in transporting vitamin A and the other the fat-soluble vitamins across the intestinal wall."

"Many of the proteins involved in vitamin A metabolism and the receptors for both vitamins A and D only function correctly in the presence of zinc."

Also...

http://www.functionalmedicineuniversity.com/public/886.cfm