Dry skin at the corners of the mouth: causes and solutions
A crack at the corner of the lips, a tightness as soon as you smile: dry skin at the corners of the mouth is as common as it is uncomfortable. Understanding its origin and distinguishing a simple chapped lip from angular cheilitis allows for appropriate action — and knowing when to consult a professional.
Chapped lips, dryness, angular cheilitis: what are we talking about?
The lips and their corners are among the thinnest areas of the face, and three situations are often confused there. Dry lips feel tight and peel slightly; chapped lips develop real cracks, sometimes painful; angular cheilitis, on the other hand, is an inflammation of the corner of the mouth that reddens and cracks. The first is a matter of daily care, the second requires medical advice.
Why the skin dries out at the corners of the lips
The skin on the lips produces almost no sebum: deprived of this protective film, it loses water very quickly, and the corner of the mouth, being mobile and exposed to saliva, becomes fragile first. Several factors contribute to dryness:
- Cold weather and dry winter air, between icy wind and heating — the primary cause of chapped lips; in summer, UV rays take over.
- Licking your lips: saliva provides momentary relief, then evaporates and dries them out even more.
- Pulling or biting small flakes of skin, which creates micro-fissures prone to irritation.
- Irritating balms (alcohol, menthol, artificial fragrance) and a lack of hydration or vitamins B, C, and E.
Simple dryness or angular cheilitis? The table to help you find your way
Dryness-related chapping improves quickly with a balm; angular cheilitis persists and can hide an infection (fungal, bacterial), a dental issue (prosthesis, oral hygiene), or a deficiency. This guide helps to distinguish between the two.
| What you observe | Dryness / slight chapping | Established angular cheilitis |
|---|---|---|
| Appearance | Tightness, fine flaking, cracks without oozing | Redness, painful fissure, sometimes scabs or whitish deposit |
| Location | Lip surface, sometimes the corner | Only the corner of the mouth, often on both sides |
| Typical duration | Improves in 3 to 7 days with a balm | Persists beyond 2 to 3 weeks and recurs |
| The right action | Regular cosmetic hydration (balm 3 to 4 times/day) | Consult a doctor or dentist |
Angular cheilitis is an inflammation of the commissures: its treatment is the responsibility of a doctor or dentist, who will seek the cause before any management. A hydrating treatment contributes to the comfort of the area but never substitutes for medical treatment.
The "supple commissures" daily protocol
For simple dryness or slight chapping, regularity is more important than quantity.
- In the morning: cleanse with lukewarm water, pat dry, then apply a balm rich in shea butter or honey.
- During the day: reapply 3 to 4 times, especially before going out in the cold; in summer, prefer a balm with UV protection.
- In the evening: 2 to 3 drops of vegetable oil (prickly pear, coconut, or olive) as an overnight mask.
- Once a week: a gentle sugar + honey scrub, for 30 seconds, then rinse with lukewarm water.
- From within: 1.5 to 2 liters of water per day and a diet rich in vitamins and good fatty acids.
As for ingredients, shea butter nourishes, honey retains water, and coconut and olive oils soften the appearance of the lips. Our prickly pear seed oil, rich in linoleic acid and vitamin E, is known to nourish this thin skin and maintain the comfort of the area.
To understand your skin's true needs, our Skin Intelligence™ diagnosis guides your routine in a few minutes.
When to consult a doctor or dentist?
Certain signs go beyond cosmetic care:
- Chapping that does not improve after 2 to 3 weeks;
- A red, cracked, and painful corner of the mouth that recurs — characteristic of angular cheilitis;
- Signs of infection (oozing, scabs, whitish deposit suggesting a fungus) or a particular context such as wearing a dental prosthesis.
Only a professional can then make a diagnosis: persistent fissures are not a matter for cosmetic self-medication.
Frequently Asked Questions
Why does the skin dry out at the corner of the lips?
The lips do not produce sebum and the corner of the mouth, where saliva accumulates, quickly becomes fragile. Winter cold, the habit of licking lips, and a lack of vitamins B, C, or E are among the most frequent causes.
How long does it take to regain supple lips?
With a balm applied 3 to 4 times a day and a few drops of oil in the evening, the appearance of slight chapping improves in 3 to 7 days. Deeper chapping requires 2 to 3 weeks of consistent care.
PERSONALIZED ROUTINE
Nopal Life Skin Intelligence™
Free diagnosis · 2 minutes
START MY FREE DIAGNOSIS →Read more
Information provided for cosmetic and educational purposes; they do not constitute medical advice.
Our anti-aging treatments
