Why are my lips so dry in the morning? Causes and how to fix it

Dry lips in the morning usually come from a long night of slow moisture loss: lips with no oil glands of their own, air that's too dry, and often a mouth that falls open while you sleep. Habits like lip licking and an irritating balm or toothpaste can keep the cycle going. The fix is usually a mix of better bedroom air, a plain ointment, and keeping your lips closed overnight.

Why do lips dry out so easily?

Lips dry out faster than the rest of your face because they have no oil glands. Cleveland Clinic explains that the skin on your lips is thinner and more sensitive than skin elsewhere, which leaves it more likely to become dry and chapped. It also notes that lips are more exposed to the elements than the rest of your body.

During the day you drink, eat, reapply balm and keep your mouth closed without thinking about it. At night none of that happens for seven or eight hours. Whatever is drying your lips has a long, uninterrupted run, which is why the damage tends to show up first thing in the morning.

Can mouth breathing cause dry lips in the morning?

Mouth breathing is one of the most common reasons lips feel parched on waking. The NHS lists breathing through your mouth at night among the main causes of a dry mouth, noting that it can happen if your nose is blocked or you sleep with your mouth open. Cleveland Clinic lists dry mouth, drooling during sleep and snoring among the common symptoms of mouth breathing.

The American Academy of Dermatology makes the link to lips directly. In its tips for chapped lips, it says a humidifier in your bedroom can be especially helpful if you breathe through your mouth at night.

No study has measured lip dryness in mouth breathers, so the evidence here is general guidance rather than trials. But the picture fits what many people describe: cracked lips together with a dry mouth, a sore throat or drool on the pillow. Our guide to signs you mouth breathe at night lists the clues, and why do I wake up with a dry mouth covers the mouth side of the same problem.

Does dry bedroom air make lips worse?

Dry air is a big factor, especially in winter. Cleveland Clinic lists cold weather and hot or dry weather among the causes of chapped lips, and its guide to morning sore throats notes that dry air tends to be a problem in winter.

Both Cleveland Clinic and the AAD suggest running a humidifier. Cleveland Clinic's prevention tips also include applying lip balm or ointment before bed and when you wake up, and keeping a balm on your nightstand. Our guide to humidifiers for sleep covers choosing and cleaning one.

Is lip licking making your dry lips worse?

Lip licking is one of the most common ways people make dry lips worse without realizing it. The AAD explains that licking feels like a natural response, but as saliva evaporates your lips become drier. Picking or biting at the skin irritates it and can stop it healing.

A 2020 review in the International Journal of Women's Dermatology describes lip licking as a compensatory habit that keeps dry lips going and often leads to lip-licking dermatitis. When it becomes chronic, the authors list problems including irritant contact dermatitis, angular cheilitis and secondary infections. Cleveland Clinic notes that children and teenagers who lick their lips often are prone to chapped lips, and can develop a rash around the mouth.

The AAD's suggestion is simple: when you catch yourself licking, apply a non-irritating lip balm instead. Some people lick their lips half asleep, which is one more reason to keep a balm by the bed.

Could your lip balm or toothpaste be the problem?

Sometimes the product meant to help is part of the problem. The AAD says to stop using any lip product that burns, stings or tingles, explaining that the feeling means the product is irritating your lips rather than working. Ingredients it suggests avoiding while lips are chapped include camphor, eucalyptus, fragrance, lanolin, menthol, phenol, salicylic acid, and flavorings such as cinnamon, citrus, mint and peppermint.

Allergy is another possibility. Cleveland Clinic lists contact cheilitis, an allergic reaction, among the types of lip inflammation. In a 2019 study in Dermatitis, researchers in Sydney looked back at 10 years of patch testing and found 91 people tested because of cheilitis. Of those, 17% were diagnosed with allergic contact cheilitis. The most frequent relevant reactions were to people's own products, fragrances and sunscreens.

If your lips are red, itchy or peeling along the edges and nothing seems to help, a product allergy is worth considering. Keep a note of everything that touches your lips, including toothpaste, and see a dermatologist, who can arrange patch testing.

What else can cause dry lips?

A few other causes are worth knowing about. Cleveland Clinic lists sunburn, dehydration, some medical conditions such as allergies and thyroid disorders, a reaction to a medication, and low iron or B vitamins. It names retinoids as one example of drug-induced cheilitis. It also describes angular cheilitis, a fungal infection at the corners of the mouth.

The table below sums up the common causes and the clues that point to each.

How do you fix dry lips in the morning?

The AAD's advice is a good place to start. It recommends a non-irritating lip balm several times a day and before bed, and a thick ointment such as white petroleum jelly for very dry, cracked lips, because ointment seals in water longer than waxes or oils. Helpful ingredients it lists include castor seed oil, ceramides, dimethicone, mineral oil, petrolatum and shea butter, in products that are fragrance-free and hypoallergenic.

It also recommends drinking plenty of water, using a balm with SPF 30 or higher outdoors, and avoiding holding metal objects like paperclips or jewelry with your lips. The NHS suggests lip balm if your lips are dry along with your mouth, and keeping water by your bed at night.

Then deal with the overnight part. If your nose is clear but your mouth still falls open, see our guide on how to stop mouth breathing at night.

Can mouth tape help dry lips?

Mouth tape keeps your lips together overnight so you breathe through your nose. Nobody has studied whether that helps dry lips, so treat it as a sensible experiment rather than a proven fix. In a 2022 study in Healthcare, everyone taking part had been seen breathing through their mouth during sleep and woke up with a dry throat. The study measured snoring rather than lips: 13 of the 20 mouth breathers with mild sleep apnea cut their snoring by at least half when they slept with their mouths taped.

The catch is timing. 3M's guidance on medical tape says tape should be applied to clean, dry skin, so balm and tape don't share the same spot at the same time. Put balm on earlier in the evening, wipe off what's left before bed, and reapply as soon as the tape comes off. Our lip balm and mouth tape guide explains the routine step by step. If the tape itself irritates your skin, see mouth tape skin irritation.

Make sure you can breathe comfortably through your nose before you try it. Our nose test takes a minute, and our first-week guide covers getting started. We don't recommend mouth tape for children.

When should you see a doctor about dry lips?

See a dermatologist if your lips don't improve after 2 to 3 weeks of good self-care. The AAD gives that timeframe and notes that an allergic reaction, a yeast infection or something more serious can cause dry lips. It describes actinic cheilitis as a precancerous condition that turns one or both lips dry and scaly. Cleveland Clinic also advises seeing a healthcare provider if chapped lips get worse or don't improve for more than a few weeks.

If dry lips come with loud snoring, check for sleep apnea. The NHLBI lists breathing that starts and stops during sleep, frequent loud snoring, gasping for air, dry mouth and daytime sleepiness among its symptoms. Talk to a doctor before taping if those apply, if your nose is often blocked, or if you're pregnant. Our page on sleep apnea warning signs has more.

Our pick (paid partner): Titan Bamboo Silk Mouth Tape

If you'd like to try keeping your lips closed overnight, our pick is Titan Bamboo Silk Mouth Tape. We haven't tested or ranked mouth tapes ourselves; this is our recommendation based on how Titan describes its tape.

Titan says the strip has no printed logo or ink on the side that touches your skin, which matters on lips that are already sensitive. It describes the bamboo silk as soft, breathable and moisture-wicking, and says its SilkSeal adhesive is made to grip through stubble and full beards without tugging hair or leaving residue. The tape is one oval size, 76 by 38 mm, worn horizontally across the lips.

Titan says every batch is third-party tested and certified PFAS-free, and its 30-night guarantee refunds you if your sleep isn't better after 30 nights. It also suggests 20 to 30 minutes of daytime practice first, a good chance to see how your lips feel before a full night with the tape.

Read next

• Lip balm and mouth tape: how to use both
• Why do I wake up with a dry mouth?
• How to stop mouth breathing at night

* This content is for informational and educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure or prevent any disease or health condition. Talk to a qualified healthcare provider about your health.