When the mouth is dry the lack of saliva is evident. Individuals may notice stickiness, dry tongue and an unusual breath odor that may be foul. Dry lips can appear cracked, pale, and may burn or bleed. Treatment of a dry mouth and dry lips is usually rather simple--increase hydration. Drinking more fluids, sucking on a hard candy, lozenge or chewing gum are just some of the ways to restore saliva to the mouth to resolve dryness. The lips can be treated with petroleum jelly or a commercial lip balm product. Causes of both a dry mouth and dry lips can vary from person to person but most causes include dry air, mouth breathing and dehydration.
Dehydration
Inadequate fluid consumption can cause lip and mouth dryness. The body secretes natural oils and fluids to keep the tissues soft and hydrated. When dehydration occurs the body conserves the extra fluid to carry out more essential processes, such as maintaining digestion. Increasing fluid intake can help soothe a dry mouth and can restore the body's process of secreting natural oils to hydrate the lips.
Mouth Breathing
Breathing through the mouth can increase dryness in the mouth. Air passes over the lips more frequently which can cause dryness to the lips as well. The sensation of a dry mouth and lips can trigger frequent lip licking. The Mayo Clinic explains that licking the lips actually dries them further. When they are wet the air causes the saliva to evaporate quickly, leaving the lips dryer than before. Lip balms are a better choice for hydrating the lips. There are many remedies for mouth breathing when sleeping, such as nasal strips or balms to help open airways.
Dry Air
Dry, hot environmental air can increase oral dryness. Running a humidifier, especially in the winter months, can diminish the dryness. Exposure to extreme climates, such as the sun, wind, or extremely cold and dry air can exacerbate oral dryness.
Smoking
Smoking can also lead to dry lips and mouth. The inhalation of the hot smoke can dry up saliva and the chemicals in the cigarette can irritate the lips.
