1) Most important thing to do is drink lots of fluids as because of dehydration the lips get chapped.
2)EXFOLIATION: Wet the toothbrush with water and then rub it gently on you lips this will remove the dead skin from your lips and exfoliate also it will give a little plump effect.
Take 1 tablespoon of sugar and mix 1 teaspoon of olive oil/honey and gently massage on to your lips for 1-2 mins. It will remove dead skin.Wipe it off with wet cloth and then aplly a lip balm.You can do this once a weak for healthy lips.
3)MOISTURIZE: Apply lip balm after doing so or vaseline or petrolem jelly.
You can also cure it by applying ghee(oil) overnight and you will wake up with super soft lips!!