Since dehydration is the main cause of dry or chapped lips, it is recommended to drink at least 2-3 litres of water daily.

Rub your lips with a slice of cucumber. Many people have found this to be a simple but effective chapped lip remedy.

The herbal benefits of Aloe Vera make it an amazing healing agent for skin. Therefore, to cure chapped lips, try putting a small amount of Aloe Vera gel on your lips daily.

The nutritional characteristics of honey make it an amazing healing and anti-bacterial agent. 

More important if none of the above seems to work and this problem continues to interfere with your beauty, it can also interfere with your health, so making an appointment to a dermatologist is a very good idea.