Why is it that the more you lick your lips, the drier they get? The answer is simple. Saliva contains digestive enzymes which will wreak havoc on the natural protective coating of your lips. The more you lick, the drier and more uncomfortable your lips will become. The skin on your lips is very thin and has no oil glands to help protect them from the environment.
Drink lots of water, use a humidifier at home, apply a waterproof lip balm that contains natural beeswax, shea butter, vitamin E (break open a capsule and apply to your lips), almond, jojoba, or coconut oils. Petroleum jelly works well, but it is a bit messy. Chapped lips, or those nasty little sores at the corners of your mouth, may indicate a deficiency in B-complex and/or iron.
Take care of your lips, . . . after all, they frame each and every word you say.