what essential oil is best for chapped sore lips
5. Castor oil is another good treatment for dry and chapped lips. 1  Simply apply castor oil to your lips several times a day. 2  You can also make a soothing treatment using one teaspoon of castor oil, one teaspoon of glycerin and a few drops of fresh lemon juice. 3  Mix it well and apply it on your lips before going to bed.