Cold weather, indoor heating, wind, and low humidity can be tough on your skin—and your lips. If your lips are dry, cracked, burning, or sore this winter, you are not alone. But not every winter lip problem is simple chapping.
At Borealis Dermatology, we see several conditions that can look similar at first glance, including chapped lips, angular cheilitis, contact irritation, and cold sores. Knowing the pattern can help you decide what you can manage at home and when it is time to have the area examined.
Q: Why do lips get so dry in the winter?
A: The lips have a thinner protective barrier than much of the rest of the skin and do not have the same oil-producing glands. Cold air outside and dry heated air indoors make it easier for moisture to evaporate. Wind, sun exposure, lip licking, and irritating products can add to the problem.
Simple chapped lips usually feel dry, tight, rough, or flaky. Small cracks can develop, especially when the skin barrier has been irritated for several days.
Q: What helps ordinary chapped lips?
A: The goal is to protect the barrier and reduce irritation while the skin heals.
- Use a bland, fragrance-free lip balm or ointment several times a day.
- Petrolatum-based ointments can help seal in moisture when the lips are very dry.
- Avoid licking, biting, or picking the lips. Saliva evaporates quickly and can make dryness worse.
- Stop any lip product that burns, tingles, or stings.
- Use an SPF 30+ lip product when spending time outdoors, even during the winter.
- Consider a bedroom humidifier if your home is especially dry.
Q: What is angular cheilitis?
A: Angular cheilitis causes redness, cracking, soreness, or crusting specifically at the corners of the mouth. Saliva that repeatedly collects in the corners can weaken the skin barrier. Yeast or bacteria may then contribute to inflammation.
People who wear dentures, frequently lick their lips, drool during sleep, or have deep folds at the corners of the mouth may be more prone to it. In some cases, nutritional deficiencies or other medical issues can contribute, so recurrent angular cheilitis deserves evaluation instead of repeated self-treatment.
Q: How is a cold sore different?
A: Cold sores are most commonly caused by herpes simplex virus type 1. They often begin with a tingling, burning, or sensitive feeling before a cluster of small blisters appears on or near the lip. The blisters can break, crust, and then heal.
Cold sores can recur in the same general area and may be triggered by illness, stress, sun exposure, or other physiologic stressors. Unlike ordinary chapped lips, a cold sore is infectious, particularly when an active blister or open sore is present.
Q: Could a lip product actually be causing the problem?
A: Yes. Lip balms, cosmetics, toothpaste, mouthwash, and even flavored products can trigger irritant or allergic contact dermatitis. If the lips keep becoming inflamed despite frequent moisturizing, the problem may be what is being applied to them rather than a lack of moisture.
A dermatologist can review the distribution of the rash and the products you use. Persistent cases sometimes require a more focused evaluation.
Q: When should I have persistent lip irritation checked?
A: Make an appointment if the problem is painful, keeps returning, becomes swollen or crusted, does not improve after a few weeks of gentle care, or interferes with eating and drinking. A persistent rough or scaly area—especially on the lower lip—should also be evaluated because sun-related conditions such as actinic cheilitis can sometimes resemble chronic chapping.
Healthy lips should not require endless trial and error. If you are not sure whether you are dealing with simple dryness, an infection, allergy, or another condition, the team at Borealis Dermatology can help determine the cause and recommend an appropriate treatment plan.
Borealis Dermatology sees patients in Garden City, Syosset, and Bellerose, NY. Visit our locations page or Book Appointment.
For an individual assessment, explore our medical dermatology care.
Related care: Contact dermatitis · Precancerous skin growths (actinic keratoses)