Treatment for chapped lips includes drinking lots of fluids and using a humidifier in the home, explains Mayo Clinic. The patient should also apply beeswax or petrolatum on the lips, according to MedlinePlus.
A lip balm that contains sunscreen lubricates the lips and treats chapped lips, states Mayo Clinic. Lip balms should have a sunscreen of at least SPF 15 to protect the lips during the summer months. Other beneficial lip balm ingredients include petrolatum and dimethicone, notes WebMD. Petrolatum seals in moisture, and dimethicone seals the splits and cracks in dry lips. If the chapped lips do not respond to treatment or become inflamed, the patient should see a doctor.