It's also important to understand that the skin on our lips is much more fragile than our skin elsewhere (so if you're moisturising your face and body daily but missing out a step dedicated to your lips, you're missing a trick). “Licking your lips can very quickly lead to dry and dehydrated lips,” says Rupert Kingston, MUA and co-founder of Delilah. “While it may seem like a natural way to moisten your lips it can in fact make them drier as saliva evaporates pulling the moisture content from the lips.