One strategy for beating dry lips is to avoid common environmental triggers. It might not always be possible for you to stay inside on bright, cold or windy days, but it sure can help. Dry air robs you of any spare moisture you've got, and compared with the rest of your skin, lips are particularly vulnerable. The sun is another key player in the drama -- without a good supply of melanin, lips are especially susceptible to the sun's powerful rays and subsequent sunburns.
Abusive weather's a real bully, so if you do choose to go outside, protect yourself. No need to leave your lips out in the cold. For example, you can wrap a scarf around your face to block the wind or wear a wide-brimmed hat to keep off the sun -- whatever it takes to shield your lips from extreme exposure.