An aging face is characterized by both wrinkling and sagging. Many of the patients go to the doctor believing that their forehead lines are caused by excessive worrying or frowning. It is quickly explained to them that facial expressions do not cause wrinkles — on their forehead or anywhere else. Those vertical “frown” lines between your eyebrows (known as glabellar lines) and the vertical ones across your forehead would not be there at all if your skin hadn’t become damaged by the sun. They are the result of facial muscles interacting with sun-damaged skin. Continue reading →