Forehead wrinkles are a natural part of skin ageing and appear as fine lines or creases across the forehead. Besides ageing, they can also be caused by repeated facial expressions, sun exposure, smoking, stress and other factors. When we express emotions, our facial muscles constantly contract and stretch the skin, which over time leads to forehead lines. HOW DOES AGE AFFECT FOREHEAD WRINKLES? Age is one of the main factors...