Actinic Cheilitis, also known as “sailor’s lip” is a condition that affects the skin surrounding the lips. Although the precise cause of this disorder is not fully understood, increased exposure to the sun, poor fitting dentures, and bad oral hygiene are considered risk factors for this condition. Actinic cheilitis may cause various symptoms involving irritation of the lips, scaley skin, swelling, and a thickening of the border between the lips and the skin. In addition, the affected area may become cancerous in about 10% of the cases. Actinic cheilitis is typically diagnosed by a physician with a physical exam. Treatment for actinic cheilitis include surgical techniques that aim to remove the damaged skin so that new, healthy skin can grow in the area, and medicine that stops damaged DNA from being made. Treatments are rapidly progressing with advances in medical research.