How to get rid frown lines, reduce Wrinkles between eyebrows Naturally. Wrinkles and frown lines between the brows are caused by repeated movements and muscle contractions. Making the face look serious all the time. Causes of wrinkles between the eyebrows 1. Sunlight makes the face dull. 2. Smoking. The chemicals that are pumped to destroy collagen and Eastin. The skin began to sag. 3. Repeated frown Causing wrinkles between the eyebrows 4. Dry skin lacking moisture. Often wrinkles easily occur