random question

So my son is in that stage where he is starting to grab things. And now he is grabbing my hair and pulling chunks of it out. It hurts so bad, and I don't mind that part but then he chews on his hands so sometimes when he pulls some of my hair out he tries to put his hands in his mouth. So I'm worried he'll put hair in his mouth. I know that sounds gross but I'm trying to figure out how to break him of this habit?