Hi, my dad is bald or almost bald. He cuts his hair with an electric clippers. However, there are also very fine hairs at the back of his neck which are too fine for the clippers. Which razor could he use to remove these? or that somebody else could use. It has to be simple to use, without a lather or anything, just something he can brush across his neck or that his wife can do quickly and easily. would somethihng like a tweezerman dermaplaner work?