Generally, chapped lips are caused due to poor dryness and dehydration. However, there are other reasons too that can make your lips chapped & cracked.
Dehydration
When your body is dehydrated, it makes the skin dry. If your lips feel chapped, drink some water first to boost hydration.
Licking Your Lips
If you have the habit of licking your lips, it might be drying out your lips making them chapped. Do not lick your lips often.
Eating Salty & Spicy
Eating extra salty and spicy food causes dehydration in the body that makes your lips dry. Moreover, these break skin protein to cause other skin problems.
Exposure To Dry Air
If you stay in AC or out in the sun a lot, your lip can become chapped due to dehydration and dry air exposure.
UV Rays Damage
UV rays can damage your lips just like other exposed skin parts. To prevent, apply lip sunscreen before heading out.
Vitamin Deficiency
If your body lacks vitamin B12 and C, it can cause dry and flaky skin. Chapped lips for a long time could be an indication.
Medicines
There are certain medicines that might be causing dryness which leads to chapped lips. You can consult your doctor to change them.
These are common causes of chapped lips. Find out the reason and then resolve it to get permanent solution for chapped lips.