You should wet your lips with a bit of water before you apply chapstick.
Adding a bit of water and wetting your lips before applying the chapstick or lip balm will help your lips stay more hydrated.
While some people will lick their lips before applying the chapstick or lip balm it's not recommended and instead you should use water.
When you lick your lips, you're coating them in saliva.
Not only does the saliva evaporate very quickly to leave lips drier than before, your saliva is also full of enzymes that are too harsh for the delicate lip skin.
These enzymes can remain on the lips and cause them to feel dry and uncomfortable.
Also you should apply the chapstick or lip balm to your lips before your lips do actually become dry and chapped.
The chapstick and lip balm can help repair and fix chapped and dry lips but it can also prevent the cracked and dry lips beforehand as well.
To properly use chapstick or lip balm wash your hands with a mild soap before touching your lips to prevent the spread of bacteria to your mouth.
Take an amount equivalent to a small pea of lip balm with your index finger, then apply the substance evenly on your lower and upper lips, starting from the center towards the corners.
And it's perfectly okay to put lip balm at night.
A huge benefit of using it at night is that your lips will be properly nourished and supple by the morning.
Your body will also flush out the toxins while you're asleep.
Also avoid using too much chapstick or lip balm as too much chapstick or lip balm can make your dry and cracked lips worse.