Is it normal to have horizontal lines on the forehead at age 20?

Fine lines to the forehead are caused from the repeated muscle actions of the face that we use to form facial expressions. A number of other factors including genetics, diet, sun exposure and smoking can also contribute to the development of fine lines and wrinkles.  The most effective treatment to help smooth fine lines and prevent the lines from becoming deeper is anti-wrinkle injections. Anti-wrinkle injections help to relax certain muscles of the face that cause wrinkles.

Horizontal lines across the forehead at age 20 are most likely genetic. Does someone else in your family, mother or father, have similar lines? Botox can do a very good job at softening most of these lines.