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The medical term for “chapped lips” is cheilitis, pronounced ky-light-iss. As a medical professional residing in the high-altitude mountains of Colorado, where humidity levels often drop below 50%, and as someone who has personally experienced various forms of cheilitis, I can provide expert insights on this issue.
Essential Insights: Understanding Why Your Lips Remain Chapped
Chronic chapped lips often result from several key factors, including irritation, dehydration, habitual lip licking, certain toothpaste ingredients, skincare products affecting the lip area, sun exposure, low humidity, food sensitivities, and lip products containing irritating substances. To effectively address chronically chapped lips, the first step is to simplify your routine: discontinue flavored, minty, or exfoliating lip products; switch to a gentle, SLS-free toothpaste; protect your lips with a simple barrier balm designed for sensitive skin, such as our Lip Doctor; and consult a dermatologist if symptoms persist.
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Potential Cause |
Symptoms You Might Experience |
Recommended Solutions |
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Toothpaste sensitivity |
Dryness, peeling, burning at the lip borders |
Switch to SLS-free, mild-flavored toothpaste without mint or cinnamon |
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Licking your lips |
Red, rough, flaky lips or a rash around the mouth |
Consistently apply a barrier balm and work on breaking the habit |
|
Skincare product migration |
Irritation at the corners or borders of the lips |
Avoid applying retinoids or acids near the lips |
|
Allergic reactions to lip products |
No improvement in lip condition despite frequent balm use |
Simplify your product lineup and consider patch testing for allergies |
|
Sun exposure |
Burning, scaling, persistent roughness on the lower lip |
Utilize SPF lip protection and consult a dermatologist if symptoms persist |
Many factors could be contributing to your chapped lips, and some of them may come as a surprise. From everyday products to common habits, here are some prevalent reasons for chronic lip dryness. But first, let’s explore why lips are particularly prone to dryness.
Understanding the Unique Structure of Your Lips
The skin on your lips is thinner than that on the rest of your face. This thinner stratum corneum (the outermost skin layer) retains less moisture and offers less protection against dehydration. Unlike most skin, lips lack sebaceous glands and hair follicles, meaning they do not produce their own sebum. Sebum plays a crucial role in skin hydration, putting lips at a significant anatomical disadvantage.
This inherent vulnerability explains why factors like dry air, sun, wind, saliva, toothpaste, food, and lip products can lead to significant problems for your lips. While your cheeks might tolerate mildly irritating products for extended periods, your lips can react negatively after just a couple of applications. This difference is not an exaggeration; it’s due to their unique structure and reduced tolerance. Dermatologists commonly cite cold weather, dry conditions, sun exposure, and habitual lip licking as frequent culprits for dry, chapped lips.
Your lips also contain a high density of nerve endings, making them more sensitive to sensations than most other skin areas. when your lips become dry, flaky, or inflamed, you will likely notice discomfort such as burning, tingling, or tightness much sooner than you would in other areas. Now, let’s explore some common hidden causes of chapped lips that may be right in front of you!
Hidden Cause #1: Flavored or Minty Lip Balms
If your lip balm is deliciously flavored, you may find yourself licking your lips unconsciously throughout the day—after all, who can resist licking something tasty? Unfortunately, this habit not only removes the balm but also leads to irritation over time. Refer to the section on lip licking for more details.
Menthol, commonly found in mint-flavored and many “medicated” lip balms, is another frequent culprit. The initial cooling sensation can feel soothing, which often leads people to believe it promotes healing. tingling does not equate to healing; in fact, in the case of chapped, cracked, or inflamed lips, ingredients that evoke cooling, warming, plumping, or stinging sensations can perpetuate the cycle of irritation. Peppermint oil has been linked to allergic contact dermatitis on the lips, and dermatology resources often highlight flavoring agents as triggers for contact cheilitis.
In summary, the very aspects that make you want to reapply your lip balm—the flavor, the tingling sensation, the aroma—may be the reason you find yourself needing to reapply so frequently. A quality lip balm should provide lasting protection and comfort without overwhelming your senses with strong flavors.
Hidden Cause #2: Toothpaste or Dental Floss Issues
The two main ingredients in toothpaste that may be problematic are sodium lauryl/laureth sulfate and flavoring agents like mint or cinnamon. Toothpaste can be a frequent cause of chronic chapped lips, as it comes into contact with your lips at least twice daily, and many people rinse their mouths without thoroughly removing any leftover toothpaste.
Sodium lauryl sulfate (SLS) is a foaming agent that gives toothpaste its satisfying lather. synthetic detergents like SLS can be drying and irritating, especially to already sensitive skin, and the lip border is a common area for such irritation. Many natural toothpaste brands also contain SLS, so be sure to check your labels. Surprisingly, some dental floss may also contain SLS—so verify the ingredients there too.
Flavorings warrant their own discussion. Mint, peppermint, spearmint, menthol, cinnamon, and other aromatic compounds can irritate certain individuals, particularly when the lip barrier is already compromised. Whitening toothpastes may also be irritating due to their stronger abrasives or peroxide-based ingredients, while some natural toothpastes can include potent essential oils such as clove, tea tree, eucalyptus, or cinnamon bark, which can vary in concentration. Just because a product is labeled as natural doesn’t mean it’s gentle, especially when your skin barrier is already stressed.
Look for a toothpaste that is both SLS-free and mildly flavored. If you prefer fluoride-free options, choose a fluoride-free toothpaste that also avoids SLS and contains only mild, natural flavoring. Here are a few of my recommended clean dental products, all of which I personally use without irritation.
Hidden Cause #3: The Habit of Lip Licking and Picking
I have a friend who is a habitual lip licker and picker, and her lips often resemble sandpaper. Human saliva contains digestive enzymes that can irritate the delicate skin on the lips, weakening the fragile barrier layer, or stratum corneum. When this barrier is compromised, lips lose moisture rapidly, leading to dryness, redness, and flakiness, often triggering the urge to lick and subsequently pick at the lips. It’s difficult to resist the temptation of flaky lips.
Lip licking creates a vicious cycle: your lips feel dry, so you lick them; saliva moistens them temporarily before evaporating; the lips become even drier; flakes develop, prompting you to pick at them. The more you lick or pick, the less chance your lips have to restore the barrier they need to retain moisture.
Lip licking is so common that there’s a medical diagnosis code, L24.A1, known as Lip Licker’s Dermatitis, defined as “irritant contact dermatitis caused by saliva,” affecting both the lips and surrounding skin. In children, this condition often resolves on its own with time and regular application of protective lip products like petroleum jelly or unflavored lip balm.
For adults, breaking the habit of licking and picking requires conscious effort. Ask friends and family to remind you if they notice you doing it, and consider chewing gum to keep your mouth occupied while you work on this habit. If you tend to pick at your lips at night, apply a generous layer of a soothing ointment before bed (I personally recommend our Lip Repair for this), as a protected lip is less likely to tempt you with its fragile edges.
Hidden Cause #4: Irritating Skincare Ingredients
Certain skincare components can significantly irritate your lips, including retinoids, exfoliating acids, benzoyl peroxide, potent vitamin C formulations, acne treatments, and peels. You may not apply these products directly to your lips, but they can migrate during your skincare routine. They can spread while you sleep, mix with moisturizer, infiltrate under sunscreen, and inadvertently reach your lips when you wash your face.
Retinoids are particularly notorious for this phenomenon. Even when applied correctly, they can irritate the sensitive skin surrounding the mouth and lips. Benzoyl peroxide can dry out and irritate the skin, while exfoliating acids are designed to remove the outer layer of cells. This approach may be beneficial for facial skin, but your lips do not require the same treatment.
If you suffer from chronic chapped lips, consider treating them as a no-fly zone for a week or two. Apply a thin layer of protective ointment on your lips before using potent facial products, apply your active skincare products with extra caution around the lip area, and wash your hands thoroughly after application. This strategy may be all your lips need to stop inadvertently participating in your skincare routine.
Hidden Cause #5: Fragrance and Essential Oils
I appreciate the beauty of aromatic plants and have built a company around their thoughtful use, believing that natural scents can enhance both skincare and overall wellness. when it comes to chapped lips, fragrance—whether synthetic or natural—might not be the best choice.
Synthetic fragrances, often labeled simply as “fragrance” or “parfum,” can contain numerous undisclosed chemicals. I do not recommend using synthetic fragrances on chapped or sensitive lips, as the ingredients may provoke allergic reactions or irritation. (In fact, I advise avoiding synthetic fragrances altogether.)
Essential oils also contain bioactive compounds, and lips can be particularly sensitive to them. In our Lip Repair, we incorporate a very low concentration of two essential oils: myrrh CO2 extract, known for its historical use on cracked skin, and bergamot that is free of bergapten, recognized for its antifungal properties. Our Lip Doctor contains no essential oils; instead, we infuse olive oil with organic lavender to extract beneficial compounds in a gentler manner.
Even essential oils that are well-tolerated on healthy skin can be too intense for lips that are cracked, peeling, or inflamed. This doesn’t mean essential oils should be entirely avoided, nor does it imply that my admiration for them has diminished. It simply suggests exercising caution, even with high-quality, responsibly sourced essential oils, when the lip barrier is compromised.
Hidden Cause #6: The Use of Lip Scrubs and Over-Exfoliation
When lips become dry and flaky, the urge to scrub away the flakes can be overwhelming. since you’re already dealing with a compromised barrier, scrubbing away what little barrier remains is unlikely to provide relief—at least until your lips return to a healthier state. For most individuals, exfoliating the lips more than lightly with a gentle konjac sponge is unnecessary.
The internet may love lip scrubs, but for the majority of chapped lips, the issue is not a lack of exfoliation. Instead, they are suffering from inflammation, moisture loss, irritation, and compromised barriers. While scrubbing might make them feel smoother temporarily, it can also expose fresh, tender skin that isn’t ready for such treatment—over-exfoliation is a genuine concern, and your lips won’t appreciate it.
Hidden Cause #7: Mouth Breathing and Low Humidity
You might not perceive yourself as a mouth breather, but you may be breathing through your mouth more often than you think, particularly while sleeping, exercising, or when experiencing nasal congestion. Every time air flows over your lips, it increases moisture loss; this effect intensifies if the air is cold, dry, or moving quickly.
If you live in a high-altitude area like I do, you are exposed to dry air constantly. If you are an outdoor enthusiast like me, you may inhale that dry air rapidly while hiking, biking, or running several times a week. Even in humid regions, indoor heating during winter months can lead to dry air exposure.
This explains why chronic chapped lips can flare up in winter, even for those who are cautious with their lip products. Forced-air heating, wood stoves, hot showers, wind, altitude, and outdoor activities all contribute to dry lips. Using humidifiers, especially in the bedroom, can help, as can applying a protective lip product before outdoor activities, at bedtime, and before flying. Your lips don’t require an elaborate nighttime routine, but they do appreciate a little preparation before prolonged exposure to dry conditions.
Hidden Cause #8: The Effects of Sun Exposure
Your lips are exposed to UV rays just like other areas of your face, with the lower lip being particularly susceptible due to its angle towards the sun. Sun exposure can dry out your lips, cause burns, exacerbate peeling, and lead to more serious long-term issues like actinic cheilitis, a precancerous condition resulting from chronic sun damage.
The challenge is that some SPF lip products may contain flavors, fragrances, chemical sunscreen filters, or other ingredients that could irritate sensitive lips. If your lips are inflamed, opt for a simple, broad-spectrum, zinc-based SPF lip product during the day, and seek shade or wear a hat whenever possible. ensure you apply your facial sunscreen to your lips as well.
Hidden Cause #9: Food Sensitivities and Irritating Foods
Foods can irritate your lips in several ways. Cinnamon is a classic irritant that appears in toothpaste, gum, candies, teas, lip products, and baked goods. Spicy foods can also aggravate chapped lips because capsaicin in peppers creates heat and irritation, which is why it is sometimes used in lip-plumping products. Acidic foods such as citrus, tomatoes, vinegar, and pineapple may sting or worsen irritation when your lips are cracked (though this doesn’t necessarily indicate an allergy).
Mango skin deserves special attention here. Mango is part of the same plant family as poison ivy and poison oak, and compounds primarily found in the peel can trigger reactions in individuals sensitive to urushiol or related compounds. This doesn’t mean everyone should avoid mangoes—that would be unfortunate. it is wise to wash your mangoes with soap and water before handling and consuming them.
If you suspect food may be causing issues for your lips, keep the experiment straightforward. Avoid suspected foods or flavors for a couple of weeks, protect your lips with a simple barrier before meals, and rinse gently around your mouth after eating.
Hidden Cause #10: The Lip Products You Currently Use
This topic is close to my heart, as I learned the hard way that my favorite lip product—our stunning, award-winning Lip Repair—contained an ingredient I had developed an allergy to, despite using it happily for years. Castor oil is a wonderful ingredient that provides a cushiony, glossy texture to lip products, contributing to their satisfying feel. ricinoleic acid, a compound unique to castor oil, has been identified in numerous cases as a common cause of allergic cheilitis linked to lip cosmetics and balms, and I happen to be one of the few who developed an allergy to it.
This doesn’t mean castor oil is inherently bad. It suggests that if your lips are chronically inflamed and you have tried various solutions, consider eliminating castor oil from your routine for a period.
Lanolin can also cause reactions in some individuals, though its allergy occurrence in the general population is relatively low (less than one percent). For those allergic to wool or with a history of dermatitis or eczema, the incidence may increase to 2-5%. While lanolin can be beneficial for dry, cracked skin, it can also trigger reactions in a small subset of individuals, especially when the skin barrier is compromised.
Beeswax may pose a problem for a small number of users, although true allergic reactions to beeswax are uncommon. When reactions do occur, they often involve residual propolis or other bee-derived compounds rather than the wax itself. I still value organic beeswax as a protective lip ingredient for many, but it’s essential to remember that “natural” does not always mean “well tolerated by everyone.”
Finally, if you’re using any “lip plumping” product, your lips might not appreciate it. Many lip plumpers use ingredients such as capsaicin, cinnamon, and mint to enhance circulation in the lips, all of which can also act as irritants. If you’re struggling with chapped lips, it’s wise to avoid lip plumping products for the time being.
Quick note: a product can work effectively for you for years and then suddenly start causing issues. Allergic contact dermatitis can develop after repeated exposure, and the lips are a common area for reactions due to the frequent application and prolonged wear of lip products.
Effective Strategies for Healing Chapped Lips
The goal is twofold: 1) provide moisture and/or non-irritating healing ingredients for your lips, and 2) prevent moisture loss. When lips are extremely dry and irritated, I often recommend a short period of using only pure, white petroleum jelly on damp lips to allow them to reset and heal without introducing new ingredients. Once the irritation subsides, you can gradually incorporate healing components like honey, tamanu oil, and cupuaçu butter, along with simple ingredients that enhance barrier function like beeswax and candelilla wax, which help retain moisture in your lips.
I understand that petroleum jelly isn’t glamorous, but when lips are in distress, glamour takes a backseat. The priority is minimizing water loss, reducing irritation, and giving your lips a few quiet days free from fragrance, flavor, or frustration. The American Academy of Dermatology endorses using non-irritating lip balm, and pure white petroleum jelly meets this criterion. I prefer petroleum jelly over other products like Aquaphor (which contains lanolin) when lips are severely inflamed, as it consists of only one ingredient.
A simple healing routine for severely chapped lips could include rinsing your lips with water after brushing your teeth, gently patting them dry while they remain slightly damp, applying a thin layer of petroleum jelly, and repeating this process before bed. During the day, use petroleum jelly as needed with a clean fingertip.
Unfortunately, petroleum jelly doesn’t adhere well, so once the acute phase is over, you can opt for a more nourishing product based on what your lips can tolerate. Some individuals respond well to lanolin, beeswax, honey, tamanu oil, and castor oil, while others may need to avoid castor oil or lanolin. Some prefer richer, butter-based formulations, while others lean towards waxier, less glossy balms. Lip care isn’t about finding a universally perfect ingredient; it’s about discovering the right combination for your lips in their current state and circumstances.
Recommended Osmia Lip Products for Chapped Lips
When I initially formulated Lip Repair—before I developed an allergy to castor oil—I could not wait to apply this rich, healing balm to my lips each night. I included some of my favorite ingredients for distressed lips: manuka honey, known for its remarkable antimicrobial and anti-inflammatory properties; myrrh extract, used for centuries to treat cracked skin; cupuaçu butter, which aids in moisture retention; and beeswax and lanolin to help the balm adhere, particularly when used as an overnight lip mask.
After developing an allergy to ricinoleic acid, I had to forgo my beloved Lip Repair. In search of a castor-oil-free lip balm, I realized that I needed to take matters into my own hands, as nearly every lip product on the market contains castor oil. In formulating Lip Doctor, my aim was to create a simple, soothing balm with the perfect texture—not overly heavy, smooth, and with just enough staying power without being sticky. It contains neither castor oil nor essential oils, making it an excellent option for those with highly sensitive lips, particularly for individuals who know or suspect that castor oil could be problematic.
Note: If you believe you might be allergic to beeswax or propolis, keep in mind that both Lip Repair and Lip Doctor contain beeswax, and Lip Repair also contains honey.
When Chapped Lips Indicate a More Serious Condition
Most cases of chapped lips arise from a combination of dry air, irritation, licking, sun exposure, products, and a compromised barrier. persistent cheilitis could signal underlying issues, warranting closer attention.
Chapped lips that do not improve after a few weeks of consistent, simple care may suggest any of the following conditions:
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Allergic contact dermatitis
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Angular cheilitis
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Yeast or bacterial infections
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Herpes simplex virus
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Actinic cheilitis due to sun damage
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Anemia
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Vitamin B-12 deficiency
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Autoimmune disorders, such as Sjögren’s syndrome
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Side effects from medications like isotretinoin, chemotherapy drugs, diuretics, or other drying prescriptions.
Consult a dermatologist, dentist, or healthcare provider if you experience cracking at the corners of your mouth that doesn’t heal, significant swelling, blisters, bleeding, crusting, white patches inside your mouth, a persistent scaly area on your lower lip, severe pain, or lips that continue to flare up despite eliminating obvious irritants. You may need treatment for infections, patch testing for allergies, evaluation for nutritional deficiencies, or an assessment of sun-related changes.
I have a more detailed post about lip cheilitis and dermatitis (linked at the top of this article), which is worth reading if your lips appear to be more than just dry.
Final Thoughts on Lip Care
If your lips are consistently chapped, the solution may not be simply to apply more lip balm. It could involve using a different lip balm, reducing the number of products, switching your toothpaste, avoiding mint and cinnamon flavors, taking a break from lip scrubs and plumpers, increasing protection from dry air and sun, or spending a few quiet days with damp lips and basic ointment.
Lips may be small, but they are complex. They feature thin skin, numerous nerve endings, limited oil production, and are constantly exposed to food, weather, toothpaste, skincare products, sunscreen, and various activities like talking, kissing, and eating. When they become irritated, they require protection, patience, and fewer opportunities for aggravation.
Wishing you love and healthier, happier lips,
This information is intended for educational purposes only and is not meant for diagnosing or treating any physical or mental health conditions, diseases, or skin issues.
References and Further Reading
Kim J, Yeo H, Kim T, Jeong ET, Lim JM, Park SG. Relationship between lip skin biophysical and biochemical characteristics with corneocyte unevenness ratio as a new parameter to assess the severity of lip scaling. International Journal of Cosmetic Science. 2021;43(3):275–282. doi: 10.1111/ics.12692. PMID: 33544395; PMCID: PMC8251770.
Tamura E, Ishikawa J, Naoe A, Yamamoto T. The roughness of lip skin is related to the ceramide profile in the stratum corneum. International Journal of Cosmetic Science. 2016;38(6):615–621. doi: 10.1111/ics.12335. PMID: 27090066.
Fonseca A, Jacob SE, Sindle A. Art of prevention: Practical interventions in lip-licking dermatitis. International Journal of Women’s Dermatology. 2020;6(5):377–380. doi: 10.1016/j.ijwd.2020.06.001. PMID: 33898702; PMCID: PMC8060673.
Lugović-Mihić L, Pilipović K, Crnarić I, Šitum M, Duvančić T. Differential diagnosis of cheilitis: how to classify cheilitis? Acta Clinica Croatica. 2018;57(2):342–351. doi: 10.20471/acc.2018.57.02.16. PMID: 30431729; PMCID: PMC6531998.
Tran A, Pratt M, DeKoven J. Acute allergic contact dermatitis of the lips from peppermint oil in a lip balm. Dermatitis. 2010;21(2):111–115. PMID: 20233551.
American Academy of Dermatology Association. 7 dermatologists’ tips for healing dry, chapped lips.
Dyall-Smith D, Ting S. Contact reactions to toothpaste and other oral hygiene products. DermNet. Last reviewed July 2024.
Enweasor C, Deane S. Lip licker’s dermatitis. DermNet. January 2020.
DermNet. Contact reactions to lipsticks and other lipcare products.
Dyall-Smith D. Allergic contact cheilitis. DermNet. 2010.
Uldahl A, Engfeldt M, Svedman C. Clinical relevance of positive patch test reactions to lanolin: a ROAT study. Contact Dermatitis. 2021;84(1):41–49. doi: 10.1111/cod.13689. PMID: 32844454; PMCID: PMC7756495.
De Groot AC, Ipenburg NA, Rustemeyer T. Propolis and beeswax in cosmetics: a market survey and literature review on their relationship and role in allergic contact dermatitis. Contact Dermatitis. 2026;94(5):494–503. doi: 10.1111/cod.70108. PMID: 41663074; PMCID: PMC13070719.
Yoo MJ, Carius BM. Mango dermatitis after urushiol sensitization. Clinical Practice and Cases in Emergency Medicine. 2019;3(4):361–363. doi: 10.5811/cpcem.2019.6.43196. PMID: 31763588; PMCID: PMC6861053.
Jessica Monroe is a seasoned author and expert in the field of cosmetic surgery, dedicated to providing insightful coverage on the latest trends and advancements in the industry. With a keen eye for detail and a passion for empowering readers, she explores a wide range of topics, from innovative procedures to patient experiences, all aimed at enhancing understanding and promoting informed choices. Jessica’s work in Cosmetic Surgery News reflects her commitment to clarity, accuracy, and advocacy for transparency in cosmetic procedures.
