What is chapped lips after kissing?

Chapped lips after kissing can occur due to several reasons, including dehydration, exposure to cold or dry air, excessive licking of lips, and infection. When two people kiss, saliva and bacteria from each other's mouths get transferred, which can irritate and dry out the lips. If one partner has a cold sore or other herpes infection, it can easily spread to the other person during kissing and cause chapped lips. To prevent chapped lips after kissing, it is essential to stay hydrated, use lip balm with moisturizing ingredients, and avoid excessive licking or biting of lips. If the chapping persists or becomes painful or infected, it is best to seek medical attention.