Chapped lips: causes, fast fixes, and when it's something else

Chapped lips are dry, cracked, peeling lips, usually caused by cold air, wind, sun, indoor heating, and licking your lips. To heal them fast, stop licking and peeling, apply a fragrance-free ointment such as white petroleum jelly several times a day and a thick layer before bed, and use a lip balm with SPF 30 or higher outdoors. The American Academy of Dermatology says you should see noticeable improvement in 2-3 weeks.

The catch is that many popular lip balms contain ingredients that keep lips chapped, and some lips that look chapped have a different problem altogether. Here’s what causes chapped lips, what actually heals them, and the signs it’s time to see someone.

Why lips chap so easily

The skin on your lips is very different from the skin on your face. Its outer layer is much thinner, it has almost no oil glands of its own, and it has less pigment to shield it from the sun. Nothing on the lips is making the oils that slow water loss elsewhere on your face, so cold, dry air pulls water out quickly.

That’s why lips are often the first place to show winter dryness, and why they need an ointment rather than the moisturizer you use on your face.

What causes chapped lips?

• Cold, wind, and low humidity. Winter air outside and heated air inside both pull water from your lips.
• Licking your lips. It feels like it helps, but the AAD explains that as saliva evaporates, your lips get drier. Saliva also carries digestive enzymes, which DermNet notes irritate the skin at the corners of the mouth.
• Sun. Lips burn easily, and sunburned lips peel. The AAD notes that sun on chapped lips can also trigger cold sores.
• Irritating lip products. Ingredients that tingle, cool, or taste nice are frequent offenders (more on these below).
• Mouth breathing. A blocked nose, a cold, or sleeping with your mouth open dries lips overnight.
• Medicines. Isotretinoin for acne dries the lips in nearly everyone who takes it, and acitretin does the same. A retinoid cream that migrates onto the lip line can dry the edges.
• Toothpaste and lipsticks. Flavorings and other ingredients can cause irritation or a true allergy.
• Biting or picking. Pulling off flakes opens new cracks.

Less often, chapping that won’t settle points to iron or B vitamin deficiency, which is one reason stubborn cases deserve a check.

How to heal chapped lips fast

1. Stop licking, biting, and peeling. Keep a plain balm in your pocket so you have something to reach for instead.
2. Use an ointment, not a stick of wax. For very dry, cracked lips, the AAD recommends a thick ointment such as white petroleum jelly, because ointment seals in water longer than waxes or oils.
3. Apply it often. Several times a day, after eating and drinking, and before bed. Pat your lips with a little water first and the ointment has more moisture to seal.
4. Use SPF outdoors. A lip balm with SPF 30 or higher before you go out, reapplied about every 2 hours outside, even in winter. The AAD suggests zinc oxide or titanium dioxide as the sun filters, and avoiding oxybenzone and octinoxate while your lips are chapped.
5. Run a humidifier at night. It helps most if you breathe through your mouth when you sleep.
6. Leave the scrub for later. Sugar scrubs and brushing tear cracked lips. Let ointment soften the flakes, and they’ll come away on their own.

How to heal chapped lips overnight

You can’t fully heal cracked lips in one night, but you can wake up with lips that look and feel far better. Before bed, wash your face, pat your lips with a little water, and smooth on a thick layer of white petroleum jelly, more than you’d wear in the day. Run a humidifier if the room is dry. It’s the same idea as slugging, applied to the place it works best.

What’s the best thing for chapped lips?

The best thing for chapped lips is a plain, fragrance-free ointment. The AAD’s list of soothing ingredients is a good shopping guide:

Ingredient	What it does	Good to know
White petrolatum (petroleum jelly)	The strongest seal against water loss	Best for cracked lips and overnight
Mineral oil	Seals and softens	Common in ointment-style balms
Dimethicone	Seals with less greasiness	A good daytime option
Shea butter	Softens and smooths	Usually well tolerated
Ceramides	Replace barrier lipids	Found in some healing balms
Castor seed or hemp seed oil	Soften and add shine	Castor oil is also a lip allergen for a small number of people (see below)
Zinc oxide or titanium dioxide	Sun protection	Look for SPF 30 or higher

What to avoid in lip balm while your lips are chapped

The AAD lists these ingredients as ones to skip while your lips are chapped:

• Camphor, menthol, eucalyptus, and phenol (the tingle and cooling feeling)
• Flavorings such as cinnamon, citrus, mint, and peppermint
• Fragrance
• Salicylic acid
• Lanolin, a known allergen for some people
• Propyl gallate, a preservative
• Octinoxate and oxybenzone, chemical sunscreen filters

Its simple test: if a product burns, stings, or feels uncomfortable, it’s irritating your lips, so stop using it. A tingle is not a sign that a balm is working.

Thick, waxy balms can also clog pores along the lip line in some people. If you get small bumps there, check the balm with the free pore-clogging ingredient checker to see which ingredients are likely culprits.

Lip licker’s dermatitis

If the dry, red skin goes beyond your lips onto the skin around them, licking is the most likely cause. DermNet describes lip licker’s dermatitis as chronic redness, dryness, and scaling of the lips and the surrounding skin, in a pattern that matches how far your tongue reaches. It’s most common in school-aged children but happens at any age, and it often gets worse in winter.

It starts a cycle. Chapped lips feel uncomfortable, so you lick them. Saliva wets and then dries the skin, which breaks down the barrier and inflames it, and inflamed skin makes you want to lick more.

Breaking the habit is the treatment. Keep a thick layer of petroleum jelly on the lips and the irritated skin around them, especially before bed and before going outside, so there’s a barrier between the skin and your tongue. If it doesn’t improve, a doctor may prescribe a short course of a mild steroid ointment or a non-steroid anti-inflammatory such as tacrolimus.

When chapped lips are something else

Most chapped lips are just chapped lips. These are the patterns that point to something else:

Condition	What it looks like	What usually helps
Angular cheilitis	Red, cracked, sometimes crusted corners of the mouth	Keeping the corners dry, a barrier ointment, and sometimes an antifungal or antibiotic cream
Allergic contact cheilitis	Itchy, burning, dry, sometimes swollen lips, often after a new lipstick, balm, or toothpaste	Finding and avoiding the allergen, often with patch testing
Lip licker’s dermatitis	Red, scaly ring of skin around the lips	Stopping the licking and a thick barrier ointment
Actinic cheilitis	Rough, scaly, pale patch, usually on the lower lip, with a blurred lip line	A dermatologist’s assessment and treatment
Cold sore (herpes simplex)	Tingling, then a cluster of small blisters at the lip edge	Antiviral treatment, ideally started early

Angular cheilitis

DermNet describes angular cheilitis as a common inflammatory condition of the corners of the mouth. Saliva pooling in the corners is a frequent trigger, and the cracks can become infected with yeast (candida) or staph bacteria. Deep folds at the mouth corners, poorly fitting dentures, and low iron or B vitamins make it more likely. If the corners keep cracking despite ointment, see a doctor: you may need an antifungal or antibiotic cream.

Allergic contact cheilitis

This is a true allergy to something that touches your lips. According to DermNet’s overview of reactions to lip products, ricinoleic acid, the main component of castor oil, is now the commonest cause of allergic cheilitis from lip cosmetics. Fragrance and flavorings (including peppermint, cinnamon, and vanilla), lanolin, propolis, the sunscreen benzophenone-3, and some colorants are other known culprits. Toothpaste flavoring is another common source.

The clue is lips that stay itchy, red, scaly, or puffy even though you’re applying balm faithfully. A dermatologist can patch test you, ideally with your own products as well as a standard series.

Actinic cheilitis

Years of sun can damage the lower lip in a way that looks like permanent chapping. DermNet describes dryness, thin fragile skin, scaly or white thickened patches, and a lip border that becomes blurred, and notes that it mostly affects fair-skinned people with a lot of outdoor sun exposure. It’s a pre-cancerous condition that can progress to squamous cell carcinoma, so it needs a professional look, not more balm.

How to prevent chapped lips in winter

• Wear a lip balm with SPF 30 or higher every time you go outside, and reapply it.
• Switch to a plain ointment at night from the first cold snap, not after your lips crack.
• Keep a humidifier running in your bedroom.
• Cover your mouth with a scarf in wind.
• Notice when you lick your lips, and reach for balm instead.

Dry lips rarely travel alone. If your face feels tight and flaky too, our guides to dry skin on the face and a winter skincare routine cover the rest.

The bottom line

Chapped lips heal fastest with less, not more: stop licking and peeling, drop balms that tingle or taste of anything, and use a plain ointment several times a day with a thick layer at night. Add SPF 30 lip balm outdoors. If your lips aren’t clearly better in 2-3 weeks, or the trouble is at the corners, itchy, or one patch that never heals, see a dermatologist.