treatment i can recommend is Elizabeth Arden 8 hour cream-expensive but worth it. However, 6 months is a long time and i think you should see your doctor for diagnosis and treatment. Loiloi x
exposure could cause lip discoloration. Drink planty of water to avoid dehydration. Also avoid alcohol and smoking as smoking causes lip discoloration too. Also keep your lips well moisturised at all times. Apply vaseline jelly before sleeping at night. Maintain a healthy diet plan with lots of fruits and vegetables. Take some multi vitamins and mineral supplements. If the symptoms are still persistent consult a dermatologist.