# Cracked Lip Corners: What Causes Them and How to Heal Fast
Cracked lips at the corners of your mouth, medically known as angular cheilitis, result from a specific chain of events. Saliva pools in the corners when you drool during sleep, smoke, or keep your mouth open for extended periods. This moisture creates an ideal breeding ground for bacteria, triggering inflammation and painful cracks.
The condition affects the delicate skin where your upper and lower lips meet at the angles of your mouth. This area receives less natural oil coverage than the rest of your lips, making it more vulnerable to irritation and infection.
Healing requires a three-part approach. First, create a moisture barrier. After gently moisturizing the area, apply an occlusive product like Vaseline or Aquaphor. These seal in hydration and prevent further bacterial colonization. Reapply consistently throughout the day and before bed.
Second, address the underlying moisture problem. Increase your water intake to maintain overall hydration. Run a humidifier in your bedroom, especially during dry seasons or in heated indoor environments. If you sleep with your mouth open, try nasal strips or sleeping on your side to keep your mouth closed.
Third, break irritating habits. Stop licking your lips, as saliva worsens the problem. Avoid smoking, which dries lips and introduces irritants. Protect your lips from extreme temperatures and wind by wearing a scarf when needed.
Most cases resolve within a week with consistent care. However, contact a dermatologist if pain increases, swelling worsens, or symptoms persist beyond a few days. Persistent angular cheilitis sometimes indicates a fungal infection requiring antifungal treatment or nutritional deficiencies like B vitamins or iron that need supplementation.
Prevention focuses on the same principles: keep mouth