Methods:--- Avoiding harmful habits.
1- stop licking your lips.
2- watch out for spicy or acidic foods.
3- breathe through your nose.
https://www.google.co.in/search?q=HOW+TO+KEEP+YOUR+LIPS+MOIST&client=ms-android-xiaomi&prmd=vin&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjNo8ac44zcAhUVVH0KHYC_CyEQ_AUIEigC&biw=360&bih=564#imgrc=OLOJ3odqV25gaM:
https://www.google.co.in/search?q=HOW+TO+KEEP+YOUR+LIPS+MOIST&client=ms-android-xiaomi&prmd=vin&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjNo8ac44zcAhUVVH0KHYC_CyEQ_AUIEigC&biw=360&bih=564#imgrc=mdPCshuVnFPdpM:
