Pacino still has a lot of his own hair. I think these 2 photos show pretty clearly that he rocks a lace frontal piece once in a while...If you google "al pacino hair" there are plenty of pics that suggest a heavy usage of concealer and some pics of him clearly wearing for movie roles as well. I think it's just standard practice in Hollywood for aging actors to use whatever means they can to look right for the role and good for the camera. What a difference a little hair makes!