Hi, take plenty of water. Start with this house hold approach.
Use toothpaste containing clove oil .
Take your diet regularly
Brush your teeth twice a daily
After 10 -15 days go to a dentist and have cleaning done..
And again....
Follow above mentioned advice regularly.
Next Steps
Consult any dermatologist or cosmetic surgeons too..
Deficiency of vitamins and minerals also causes cracking of lips.